We need answer user's request: "write a Python code for Django backend that creates a case management system LOGIN PAGE where the Layout is: Logo (top) Email field Password field "Login" button "Forgot password"" Need produce final with Python code for Django backend. Ambiguity: backend that creates login page? Could mean Django app with login page view/template. Need provide code: models? auth? case management system login page. Likely use Django built-in auth login page. Need include layout: logo top, email field, password field, login button, forgot password. Need Python code maybe views, urls, template HTML, settings? Since asks Python code for Django backend that creates a case management system LOGIN PAGE. We can provide minimal Django project code: views.py login_page view that renders template, urls.py, template with layout. Maybe also authentication logic? "backend" maybe API? But layout implies frontend template. Could give Django backend code including view, form, URLs, template, and optional API endpoint for login using Django REST Framework? Need decide. The wording: "write a Python code for Django backend that creates a case management system LOGIN PAGE where the Layout is: Logo (top) Email field Password field “Login” button “Forgot password”" So likely wants code to create login page. We can provide complete small Django implementation: app case_management, views.py with LoginView, urls.py, templates/case_management/login.html, forms.py, settings adjust maybe. If backend only, include template as HTML but that's not Python. But can include template strings in Python? Better to show files including .html; the Python code is views/urls/forms. Need ensure login page layout. Could include custom form fields email and password. Use django.contrib.auth.forms.AuthenticationForm? Simpler custom form. Need maybe forgot password link. Include logo at top via

or placeholder. Need handle GET/POST, authenticate, redirect. Need mention run steps. Could also include Django REST Framework backend for login page API: serializers, views, urls returning JSON. But layout is UI, so Django template. Need final answer in English. Provide code blocks. Need be thorough. Could present: - project settings: add 'case_management' to INSTALLED_APPS, static dirs, templates dirs, login redirect. - case_management/forms.py: LoginForm(forms.Form) with email, password. - case_management/views.py: login_page(request): if POST: form, authenticate, login, redirect; else GET. - urls.py: path('login/', login_page, name='login'), maybe forgot-password view optional. - templates/case_management/login.html: layout exactly: logo top, email, password, button, forgot password. Use CSS minimal. - optional static logo. - admin user create. - run. Need maybe mention "case management system" maybe app name case_management. Could also include password reset? User only asks login page layout with forgot password link. We can add stub forgot-password view or link to Django auth views PasswordResetView. If include full password reset, longer. Maybe link href="#" or to 'password_reset' if configured. To be helpful, include optional minimal forgot password view that sends email? But that's beyond. Could include link to Django built-in password reset view and required templates? Too long. Since layout only, link can be placeholder. But if backend creates login page, maybe want forgot password functionality. We can include a simple forgot_password view that if POST email, sends message via console backend. But user didn't ask to implement. Could include optional. Need think about Django version compatibility. Use from django.contrib.auth import authenticate, login. Use from django.shortcuts import render, redirect. Use from django import forms. Use from django.urls import reverse. Template: ... style ... Need if form has errors display. Could use form. But layout simple. Maybe use form fields and errors. Could include custom CSS to center, logo top. Need ensure layout: Logo top, email, password, button, forgot password. So in HTML logo before form. Need maybe include login required decorator? No. Could include urls for password reset: path('password_reset/', PasswordResetView.as_view(email_template_name='case_management/password_reset_email.html'), name='password_reset'), but requires templates and email. Maybe too much. Could just use link to # with title. But forgot password should be a link. Maybe implement basic forgot password with Django auth. Could be overkill. But final can include optional forgot password route: a view that accepts email and uses PasswordResetView? Simpler: use Django's built-in PasswordResetView and templates. But user asked login page, not full reset. Maybe include comment: replace href with your forgot-password URL. But to be complete, provide a minimal forgot password page? Hmm. Could provide two options: Option A simple Django login page (recommended). Option B if you need API-only backend. But user asks code, so maybe one coherent answer. Need likely include "Python code" not HTML. But code includes template. We can state: "The Python backend code is below; the .html template controls the layout." Then include all. Let's craft final: Title: Minimal Django backend for Case Management System login page. Assumes Django installed: pip install django. Start project: django-admin startproject config .; python manage.py startapp case_management. Add to config/settings.py: INSTALLED_APPS += ['case_management'] STATICFILES_DIRS = [BASE_DIR / 'static'] Maybe TEMPLATES app dir. LOGIN_URL = '/login/' LOGIN_REDIRECT_URL = '/cases/' (or /) LOGOUT_REDIRECT_URL = '/login/' In case_management/forms.py: class LoginForm(forms.Form): email = forms.EmailField(label='Email', widget=forms.EmailInput(attrs={'placeholder': 'you@example.com'})) password = forms.CharField(label='Password', widget=forms.PasswordInput(attrs={'placeholder': 'Password'})) views.py: def login_page(request): if request.method == 'POST': form = LoginForm(request.POST) if form.is_valid(): email = form.cleaned_data['email'].strip().lower() password = form.cleaned_data['password'] user = authenticate(request, username=email, password=password) if user is not None: login(request, user) next_url = request.GET.get('next') or reverse('home') maybe # sanitize next? Use resolve_url? return redirect(next_url if valid else reverse('home')) else: form.add_error(None, 'Invalid email or password.') else: form = LoginForm() return render(request, 'case_management/login.html', {'form': form}) Need next_url safe. Use from django.urls import reverse, resolve_url; next_url = request.GET.get('next'); redirect = resolve_url(next_url) if next_url and next_url.startswith('/') else reverse('home'). Or omit next. Need home view? Could define home view requiring login: from django.contrib.auth.decorators import login_required def home(request): return render(request, 'case_management/home.html') Need home.html minimal. urls.py project: from django.contrib import admin from django.urls import path from case_management.views import login_page, home urlpatterns = [path('admin/', admin.site.urls), path('', home, name='home'), path('login/', login_page, name='login')] Maybe forgot password: path('forgot-password/', forgot_password, name='forgot_password') and view. If we include forgot password simple: def forgot_password(request): if request.method == 'POST': email = request.POST.get('email','').strip() if email: send_mail(subject='Reset your password', message=..., from_email=settings.DEFAULT_FROM_EMAIL, recipient_list=[email], fail_silently=True) return redirect('login') # or success return render(request, 'case_management/forgot_password.html') Template with email. But layout not required. Could add. But if using send_mail, email backend console. Add EMAIL_BACKEND = 'django.core.mail.backends.console.EmailBackend'. Could be helpful. But user asked only login page. Maybe include "Forgot password link" only. Maybe final include login.html with CSS: * { box-sizing: border-box; font-family: Arial, sans-serif; } body { margin:0; background:#f3f4f6; display:flex; min-height:100vh; align-items:center; justify-content:center; } .login-card { background:#fff; width:100%; max-width:420px; padding:32px; border-radius:12px; box-shadow:0 10px 25px rgba(0,0,0,.08); text-align:center; } .logo { width:120px; margin-bottom:24px; } form { text-align:left; } label { display:block; margin:12px 0 6px; font-weight:600; color:#374151; } input { width:100%; padding:12px; border:1px solid #d1d5db; border-radius:8px; font-size:16px; } button { margin-top:20px; width:100%; padding:12px; background:#2563eb; color:white; border:none; border-radius:8px; font-size:16px; cursor:pointer; } button:hover { background:#1d4ed8; } .forgot { display:inline-block; margin-top:16px; color:#2563eb; text-decoration:none; } .errors { color:#dc2626; } In template use {{ form.errors }} maybe at top. But layout exact. Could display field errors under fields without breaking. Use: {% for field in form %} {{ field.label_tag }} {{ field }} {% for error in field.errors %}{{ error }}{% endfor %} {% endfor %} This preserves layout. Need static logo. Could create static/logo.png. If missing, use inline SVG? To avoid missing file, use placeholder div with text or inline SVG. Layout says Logo top. Use

and instruct to put logo.png in static. Or use

CMS

if no logo. Better: include ? Too complex. Simpler: use

Logo

or . I can include both? The layout requires logo. Use

and note create static/logo.png. If no image, replace with text. Need maybe include "case management system" in title. Could include API code alternative? Maybe user specifically "Django backend" not frontend. But layout suggests page. To be safe, include a small API endpoint too? Maybe not, could confuse. Could include note: If you want a JSON API instead, use DRF login endpoint. But final oververbosity 9: can include optional DRF variant? The request: "write a Python code for Django backend that creates a case management system LOGIN PAGE where the Layout is..." They likely expect code for login page. We can include main code and optional API note. Need ensure no missing imports. Let's draft code. Project structure: . ├── config/ │ ├── settings.py │ ├── urls.py ├── case_management/ │ ├── forms.py │ ├── views.py │ ├── templates/case_management/ │ │ ├── login.html │ │ └── home.html ├── static/logo.png └── manage.py Settings additions: INSTALLED_APPS = [..., 'case_management'] STATIC_URL = '/static/' STATICFILES_DIRS = [BASE_DIR / 'static'] LOGIN_URL = '/login/' LOGIN_REDIRECT_URL = '/' LOGOUT_REDIRECT_URL = '/login/' Could use app dir templates; no TEMPLATES change needed if inside app/templates. forms.py: from django import forms class LoginForm(forms.Form): email = forms.EmailField(label='Email', widget=forms.EmailInput(attrs={'placeholder': 'you@example.com'})) password = forms.CharField(label='Password', widget=forms.PasswordInput(attrs={'placeholder': 'Password'})) views.py: from django.contrib.auth import authenticate, login from django.contrib.auth.decorators import login_required from django.shortcuts import render, redirect from django.urls import reverse from .forms import LoginForm def login_page(request): if request.method == 'POST': form = LoginForm(request.POST) if form.is_valid(): email = form.cleaned_data['email'].strip().lower() password = form.cleaned_data['password'] user = authenticate(request, username=email, password=password) if user is not None and user.is_active: login(request, user) next_url = request.GET.get('next') if next_url and next_url.startswith('/') and not next_url.startswith('//'): return redirect(next_url) return redirect(reverse('home')) form.add_error(None, 'Invalid email or password.') else: form = LoginForm() return render(request, 'case_management/login.html', {'form': form}) @login_required def home(request): return render(request, 'case_management/home.html') Maybe add logout view: from django.contrib.auth import logout def logout_page(request): logout(request); return redirect('login') Not necessary. urls project: from django.contrib import admin from django.urls import path from case_management.views import login_page, home urlpatterns = [ path('admin/', admin.site.urls), path('login/', login_page, name='login'), path('', home, name='home'), ] login.html: {% load static %} ...

Sign in

Forgot password?

Need if no /forgot-password route, 404. Could use href="#" but better route. We can add simple forgot password view and template. Let's include it to make link work. forgot_password view: def forgot_password(request): if request.method == 'POST': email = request.POST.get('email','').strip().lower() if email: send_mail(subject='Password reset requested', message='We received a password reset request for this email. ...', from_email='noreply@example.com', recipient_list=[email], fail_silently=True) return redirect('login') return render(request, 'case_management/forgot_password.html') Need settings: EMAIL_BACKEND console. But send_mail with console prints. Need from django.core.mail import send_mail. If not configured, fail_silently True. forgot_password.html minimal: But layout not requested; okay. Could include full Django auth password reset instead of email request? It would require multiple templates. Simpler stub. Need maybe mention to create user: python manage.py createsuperuser or create user. For login page, any User with email as username. Django auth uses username by default; authenticate(username=email). That works if user's username equals email. Alternative use email field in user model. Simpler: create user with email as username: User.objects.create_user(username='user@example.com', password='...') or createsuperuser and set username to email. Note: if using Django's User, username field is required and not unique? It's unique. You can set username to email. Or use django-allauth. But for minimal, use username=email. Could include a management command to create demo user? Maybe not. Need maybe include static CSS file? Inline CSS okay. Potential issue: authenticate(request, username=email, password=password) will match username field, not email if username not email. We can note: "For this example, use the user's email as the username" or customize. Better: Use a model with EmailField? Too much. Could instead query User by email and check_password? For User, email not unique. But can authenticate via username if username=email. We can mention: create user with username equal to email. Or implement custom user model? Overkill. Maybe use django.contrib.auth.models.User.objects.get(email=email) and user.check_password(password) then login. This allows login by email regardless of username. But if multiple users same email, take first. In a simple case management system, okay. Use: from django.contrib.auth.models import User user = User.objects.filter(email=email, is_active=True).first() if user and user.check_password(password): login... This is not using authenticate, so no rate limiting/backends? But okay for simple. But security: authenticate better. Could use custom backend that authenticates by email. Let's implement EmailBackend in backends.py: from django.contrib.auth.backends import ModelBackend from django.contrib.auth.models import User class EmailBackend(ModelBackend): def authenticate(self, request, email=None, password=None, **kwargs): try: user = User.objects.get(email=email) except User.DoesNotExist: return None if user.check_password(password): return user return None Then in settings AUTHENTICATION_BACKENDS = ['case_management.backends.EmailBackend']. This is more proper and logs in by email. Include backends.py. Then views use authenticate(request, email=email, password=password). Good. That is Python code for backend. Let's include. case_management/backends.py: from django.contrib.auth.models import User from django.contrib.auth.backends import ModelBackend class EmailBackend(ModelBackend): def authenticate(self, request, email=None, password=None, **kwargs): if email is None or password is None: return None try: user = User.objects.get(email=email) except User.DoesNotExist: return None if user.check_password(password): return user return None Settings: AUTHENTICATION_BACKENDS = ['case_management.backends.EmailBackend'] This allows email login. Need ensure User email can be set. Create user: User.objects.create_user(username='admin', email='admin@example.com', password='...') or createsuperuser with email. Could include custom user model with email as unique? Too heavy. Need maybe include login required. Good. Could include API? Maybe optional section at end: If your frontend is separate and you want JSON login API, add DRF endpoint. But the question says layout, so maybe not. Let's craft final answer with: - "Below is a complete minimal Django backend implementation" - Steps: 1. Create project/app commands. 2. settings.py additions. 3. Case management app files: apps.py? Not necessary but maybe include __init__? Could include full code. 4. templates. 5. Run. - Include note about logo file. Need ensure code correctness. Let's write full code. config/settings.py additions: INSTALLED_APPS = [ 'django.contrib.admin', 'django.contrib.auth', 'django.contrib.contenttypes', 'django.contrib.sessions', 'django.contrib.messages', 'django.contrib.staticfiles', 'case_management', ] STATIC_URL = '/static/' STATICFILES_DIRS = [BASE_DIR / 'static'] LOGIN_URL = '/login/' LOGIN_REDIRECT_URL = '/' LOGOUT_REDIRECT_URL = '/login/' AUTHENTICATION_BACKENDS = ['case_management.backends.EmailBackend'] EMAIL_BACKEND = 'django.core.mail.backends.console.EmailBackend' DEFAULT_FROM_EMAIL = 'noreply@yourdomain.com' case_management/apps.py maybe: from django.apps import AppConfig class CaseManagementConfig(AppConfig): default_auto_field = 'django.db.models.BigAutoField' name = 'case_management' But if using startapp, default fine. Include. case_management/backends.py as above. case_management/forms.py as above. case_management/views.py: from django.contrib.auth import authenticate, login, logout from django.contrib.auth.decorators import login_required from django.core.mail import send_mail from django.shortcuts import redirect, render from django.conf import settings from django.urls import reverse from .forms import LoginForm def login_page(request): if request.method == 'POST': form = LoginForm(request.POST) if form.is_valid(): email = form.cleaned_data['email'].strip().lower() password = form.cleaned_data['password'] user = authenticate(request, email=email, password=password) if user is not None: login(request, user) next_url = request.GET.get('next') if next_url and next_url.startswith('/') and not next_url.startswith('//'): return redirect(next_url) return redirect(reverse('home')) form.add_error(None, 'Invalid email or password.') else: form = LoginForm() return render(request, 'case_management/login.html', {'form': form}) def logout_page(request): logout(request) return redirect('login') @login_required def home(request): return render(request, 'case_management/home.html') def forgot_password(request): if request.method == 'POST': email = request.POST.get('email', '').strip().lower() if email: send_mail( subject='Password reset requested', message=( 'We received a password reset request for your Case Management account.\n\n' 'If you did not request this, you can ignore this email.\n' ), from_email=settings.DEFAULT_FROM_EMAIL, recipient_list=[email], fail_silently=True, ) return redirect('login') return render(request, 'case_management/forgot_password.html') Need if user doesn't exist, still send generic message? Could check User to avoid email enumeration? But okay. Could not send if no user? For security, don't reveal. Maybe send to any email? That can spam. Better: only send if user exists? But then reveals. For simple, maybe check but always show success. Could do: from django.contrib.auth.models import User user = User.objects.filter(email=email, is_active=True).first() if user: send_mail... return redirect('login') This reveals via email only not UI. Fine. Add urls.py project: from django.contrib import admin from django.urls import path from case_management.views import login_page, logout_page, home, forgot_password urlpatterns = [ path('admin/', admin.site.urls), path('', home, name='home'), path('login/', login_page, name='login'), path('logout/', logout_page, name='logout'), path('forgot-password/', forgot_password, name='forgot_password'), ] Templates. login.html: {% load static %} Login | Case Management System

Case Management System

Forgot password

Need CSS .error and .errors. Use .error for small. home.html: {% load static %} ... simple page with logout. forgot_password.html: {% load static %} ... Need maybe include static directory creation. In final: "Put a logo file at static/logo.png". Need maybe include "If you don't have logo, replace img with

Logo

" maybe not. Need maybe include migrations? No migrations needed for auth already. Could include a test user shell command: python manage.py shell from django.contrib.auth.models import User User.objects.create_user(username='caseuser', email='caseuser@example.com', password='password123') # or create superuser This is helpful. Need mention "This example uses Django's built-in User model and logs in by email via a custom backend." Good. Potential issue: AUTHENTICATION_BACKENDS replacing ModelBackend may affect admin? Admin uses authenticate? If email backend only, admin login by username won't work. Better include both backends: AUTHENTICATION_BACKENDS = [ 'django.contrib.auth.backends.ModelBackend', 'case_management.backends.EmailBackend', ] This allows username or email. But view calls authenticate(request, email=email, password=password). ModelBackend.authenticate expects username; email kwarg ignored, returns None? ModelBackend authenticate(self, request, username=None, password=None, **kwargs). It will ignore email, return None. EmailBackend handles. Admin uses username via ModelBackend. Good. Include both. But in views, if using authenticate(request, email=email, password=password), ModelBackend won't authenticate by email. Fine. Could also call authenticate(request, username=email, password=password) to support username/email? But backend email only email. Better use email. Need ensure custom backend authenticate receives email. Yes. Could include "If you prefer not to add custom backend, use username as email". But include backend. Need maybe include "case management system" app can later add cases. Not needed. Could include "Django backend that creates a login page" maybe means a Django app that generates page? Our code does. Let's consider if they want "Python code for Django backend" only, not template. We can say "The layout is implemented in the template; the Python files below wire up the backend." That's acceptable. Need maybe include a standalone single-file version? Could be too long. But maybe user wants a code snippet. We can provide files. Let's think of edge cases: - CSRF: included. - Secure: Use password input, hidden? no. - Password reset link: We send generic email not actual reset token. If they expect forgot password functionality, maybe not enough. Could use Django's built-in password reset views to generate tokens. But requires templates and email templates. We can include built-in instead of custom stub. Let's evaluate. Implement full forgot password with Django auth views: urls: from django.contrib.auth import views as auth_views path('password_reset/', auth_views.PasswordResetView.as_view(email_template_name='case_management/password_reset_email.txt', template_name='case_management/password_reset.html'), name='password_reset'), path('password_reset/done/', auth_views.PasswordResetDoneView.as_view(template_name='case_management/password_reset_done.html'), name='password_reset_done'), path('reset///', auth_views.PasswordResetConfirmView.as_view(template_name='case_management/password_reset_confirm.html'), name='password_reset_confirm'), path('reset/done/', auth_views.PasswordResetCompleteView.as_view(template_name='case_management/password_reset_complete.html'), name='password_reset_complete'), Templates needed: password_reset.html (email field), done, confirm (new password form), complete, email text. That's a lot. But it's standard. Could include minimal templates. But user only asks login page layout; including full password reset may be overkill. But forgot password link should maybe work. Our stub works (sends non-actionable email). Could note "This is a placeholder forgot-password route; replace with Django's password reset if you need real token flow." But if we call it forgot password, maybe not ideal. We can include a more robust minimal token reset using django.contrib.auth? We can use PasswordResetForm and views? Simpler to use built-in but include only necessary templates? Could be lengthy but doable. Desired oververbosity 9; we can include full optional forgot password. But maybe too much for simple request. Let's decide. The user specifically: "write a Python code for Django backend that creates a case management system LOGIN PAGE where the Layout is: Logo (top) Email field Password field “Login” button “Forgot password”" They likely want login page code, not full password reset. A link labeled "Forgot password" can be to a placeholder. I'll include a simple forgot password view that returns a page and sends a placeholder email. That's enough. Mention can replace with Django's built-in password reset. Need maybe include "backend" but login page is frontend. Could say "Django serves this page and handles POST login." Good. Let's ensure final not too enormous but detailed. Include all code. Potential issue with template using form.email.value: if form not bound, value None, default ''. okay. CSS: .error { color: #dc2626; display:block; margin-top:4px; } .nonfield { color:#dc2626; background:#fef2f2; border:1px solid #fecaca; padding:10px; border-radius:6px; margin-bottom:12px; } Use class="error" for nonfield too maybe. login.html: This includes extra h1/subtitle; layout still logo top, email, password, button, forgot password. h1 may be extra but okay. If strict, maybe omit h1/subtitle? Layout lists only items. But a title is typical. To be strict, maybe only logo, form fields, button, forgot password. Could include h1 as part of logo? Hmm. The layout says Logo (top), Email field, Password field, “Login” button, “Forgot password”. We can keep no h1/subtitle to match exactly. But a page without title? Could have visually hidden h1. Use . But not necessary. To match, use only those. But a heading might be acceptable. Maybe include h1 after logo? The layout didn't say no other elements. But to be safe, keep minimal: logo, form, forgot. Could add title in . No visible h1. But for accessibility, add sr-only h1. That's okay. Template: <main class="login-card"> <img class="logo" ...> <h1 class="sr-only">Case Management System Login</h1> <form ...> ... </form> <a class="forgot" ...>Forgot password</a> </main> CSS .sr-only { position:absolute; width:1px; height:1px; ... }. This matches layout. Need maybe include field labels? Email field and Password field likely includes labels. Good. Could use form.email and form.password to render. But explicit inputs easier. Use name attributes email/password matching form. If form invalid, re-enter email value. Good. Need maybe include novalidate? If novalidate, custom validation. Could leave validate. Use novalidate to rely on Django? Either okay. If novalidate, browser won't validate; Django will. Fine. Need maybe include static fallback if logo missing: The image will be broken. Could use <img ... onerror="this.remove()"> and a text? Maybe better to use a placeholder logo generated with CSS: <div class="logo" role="img" aria-label="Case Management System logo">CMS</div> But layout says Logo (top). A div with text is a logo placeholder. Could use <img> and note. I'd use <img> and instruct. To avoid broken if user doesn't have logo, we can include inline SVG data URI. For example: <img class="logo" src="data:image/svg+xml,..." alt="Logo"> But long. Or use <div class="logo">Logo</div>. The user can replace with image. Since code for backend, placeholder okay. Let's use: <img class="logo" src="{% static 'logo.png' %}" alt="Case Management System logo"> And include a static placeholder note. Maybe include a small base64 PNG? Not necessary. Could use inline SVG in HTML: <svg class="logo" width="80" height="80" viewBox="0 0 80 80" xmlns="http://www.w3.org/2000/svg"><rect width="80" height="80" rx="12" fill="#2563eb"/><text x="50%" y="55%" font-size="28" fill="white" text-anchor="middle" dominant-baseline="middle">CMS</text></svg> This ensures logo appears without file. That might be best. Layout logo top. Use SVG. But if they want logo image, they can replace. Let's include an inline SVG placeholder and comment to replace with <img src="{% static 'logo.png' %}">. This avoids static dependency. But code in template not Python. Good. login.html:  <svg class="logo" ...>...</svg> This is robust. Need maybe include "case management system" text in logo? SVG text "CMS". CSS: .logo { width:96px; height:96px; margin:0 auto 20px; display:block; } For img, object-fit contain. Need maybe include home.html: {% load static %} ... simple: <!DOCTYPE html>... <body><div class="page"><h1>Case Management Dashboard</h1><p>Welcome, {{ user.get_full_name|default:user.username }}</p><a href={% url 'logout' %}>Logout</a></div></body> Need maybe include static? Not necessary. Potential issue: if home requires login, after login redirect home. If no user, login. Could include logout link in home. Need maybe include "runserver". Now, should we include "Python code" only? We can include HTML templates. The final can be: "Here is a complete minimal implementation. The Python backend files are ... The template implements the requested layout." Then code blocks. Let's also include optional "If you only want the Python view and want to plug into an existing frontend, use this JSON API endpoint" maybe at end. But maybe too much. The request is specifically login page layout. Could include a short optional DRF snippet? Maybe not to keep focused. But "Django backend" could mean they don't need template, they need API that frontend calls. However layout is UI. If they are using React frontend, they'd ask API. But "LOGIN PAGE where Layout is" implies server-rendered page. We'll provide server-rendered. Let's consider if they might be in a learning context: "write a Python code for Django backend that creates a case management system LOGIN PAGE where the Layout is: Logo (top) Email field Password field 'Login' button 'Forgot password'". They might expect a view and template. Our answer fits. Need maybe include "case management system" in app name. Good. Let's ensure code syntax. Full code: # config/settings.py (only additions) INSTALLED_APPS = [ 'django.contrib.admin', 'django.contrib.auth', 'django.contrib.contenttypes', 'django.contrib.sessions', 'django.contrib.messages', 'django.contrib.staticfiles', 'case_management', ] STATIC_URL = '/static/' STATICFILES_DIRS = [BASE_DIR / 'static'] AUTHENTICATION_BACKENDS = [ 'django.contrib.auth.backends.ModelBackend', 'case_management.backends.EmailBackend', ] LOGIN_URL = '/login/' LOGIN_REDIRECT_URL = '/' LOGOUT_REDIRECT_URL = '/login/' EMAIL_BACKEND = 'django.core.mail.backends.console.EmailBackend' DEFAULT_FROM_EMAIL = 'noreply@example.com' # case_management/backends.py from django.contrib.auth.backends import ModelBackend from django.contrib.auth.models import User class EmailBackend(ModelBackend): def authenticate(self, request, email=None, password=None, **kwargs): if email is None or password is None: return None try: user = User.objects.get(email=email) except User.DoesNotExist: return None if user.check_password(password): return user return None Need ModelBackend import? Could inherit BaseBackend, but ModelBackend okay. If inherit ModelBackend, it has authenticate by username; we override. Good. # case_management/forms.py from django import forms class LoginForm(forms.Form): email = forms.EmailField( label='Email', widget=forms.EmailInput(attrs={'placeholder': 'you@example.com'}) ) password = forms.CharField( label='Password', widget=forms.PasswordInput(attrs={'placeholder': 'Password'}) ) # case_management/views.py from django.conf import settings from django.contrib.auth import authenticate, login, logout from django.contrib.auth.decorators import login_required from django.contrib.auth.models import User from django.core.mail import send_mail from django.shortcuts import redirect, render from django.urls import reverse from .forms import LoginForm def login_page(request): if request.method == 'POST': form = LoginForm(request.POST) if form.is_valid(): email = form.cleaned_data['email'].strip().lower() password = form.cleaned_data['password'] user = authenticate(request, email=email, password=password) if user is not None: login(request, user) next_url = request.GET.get('next') if next_url and next_url.startswith('/') and not next_url.startswith('//'): return redirect(next_url) return redirect(reverse('home')) form.add_error(None, 'Invalid email or password.') else: form = LoginForm() return render(request, 'case_management/login.html', {'form': form}) def logout_page(request): logout(request) return redirect('login') @login_required def home(request): return render(request, 'case_management/home.html') def forgot_password(request): if request.method == 'POST': email = request.POST.get('email', '').strip().lower() if email: user = User.objects.filter(email=email, is_active=True).first() if user: send_mail( subject='Case Management System: password reset requested', message=( 'We received a password reset request for your Case Management System account.\n\n' 'If you did not request this, you can safely ignore this email.' ), from_email=settings.DEFAULT_FROM_EMAIL, recipient_list=[email], fail_silently=True, ) return redirect('login') return render(request, 'case_management/forgot_password.html') Need if send_mail fail_silently and console backend. Good. # config/urls.py from django.contrib import admin from django.urls import path from case_management.views import forgot_password, home, login_page, logout_page urlpatterns = [ path('admin/', admin.site.urls), path('', home, name='home'), path('login/', login_page, name='login'), path('logout/', logout_page, name='logout'), path('forgot-password/', forgot_password, name='forgot_password'), ] Templates. login.html: {% load static %} <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8" /> <meta name="viewport" content="width=device-width, initial-scale=1" /> <title>Login | Case Management System

Forgot password

Need if static not used? We load static but not use if SVG. That's fine. Could remove {% load static %} if not used? It's okay. But if we comment out img with static, the template tag inside comment? In Django template, {% static %} inside HTML comment is still processed? Actually template comments are not template comments; tags inside are processed? Yes, {% static %} inside HTML comment will be processed if it's a template tag, but since it's in comment, it still outputs inside comment. That's okay. But if static not configured, maybe error? Static files setting okay. Could avoid by not including comment with tag? We can just comment "Replace with img src logo.png" no template tag. But helpful. Since we have static load, okay. But if user hasn't created static, tag still works. It will output /static/logo.png inside comment. Fine. home.html: {% load static %} Home | Case Management System

Case Management Dashboard

Signed in as: {{ user.get_full_name|default:user.email }}

Logout

Need CSS maybe simple. forgot_password.html: ... Need CSS duplicated. Could make base template to avoid duplication. But minimal. Could include common CSS in each. Fine. Could create base.html with style block and extend. But more files. Simpler duplicate. But oververbosity okay. Maybe create templates/case_management/base.html with style and blocks. That would be cleaner. Let's consider. base.html: {% load static %} ... common style ... login.html extends base, block content. forgot extends. home maybe different layout, can extend base or separate. This reduces duplication. But user may prefer simple. We can include base template. More code but organized. base.html content: {% load static %} ... styles ... login.html: {% extends "case_management/base.html" %} {% block content %} Forgot password {% endblock %} forgot_password.html similar. home.html can be separate or extend base with different card? Home can be separate. This is elegant. Need include base.html in final. Need ensure .login-card text-align center; form text-align left. Good. Let's draft base.html: {% load static %} {% block title %}Case Management System{% endblock %} login.html title block: Login | Case Management System? If base has block title, can override: {% block title %}Login | Case Management System{% endblock %}. home.html separate with page style. Could also use base but home not login card. Fine. Need include "Forgot password" not "Forgot password?" maybe user specified "Forgot password" no question mark. Use exact "Forgot password". Good. Login button exact "Login". Good. Email field label "Email". Password label "Password". Good. Need maybe mention "The layout order is: logo, email, password, login button, forgot password." Good. Now, potential issue: If using novalidate, the value of email on validation error is preserved. Good. Need maybe include "forms.py" not strictly needed if explicit inputs. But view uses form for validation. Good. Could simplify view not using form? Use request.POST. But form is better. Need maybe include "case_management/templates/case_management/..." path. Good. Let's think about email backend: If EMAIL_BACKEND console, send_mail prints to terminal. Good for development. In production configure SMTP. Need maybe include "python manage.py makemigrations"? No new models. No. Need maybe include "create user with email": python manage.py shell >>> from django.contrib.auth.models import User >>> User.objects.create_user(username='case.manager', email='case.manager@example.com', password='YourStrongPassword') >>> exit Or createsuperuser: python manage.py createsuperuser Then set email field. In admin, username can be anything, email login uses email. Need maybe include "Access login at http://127.0.0.1:8000/login/". Good. Need maybe include "If you want the home page not to require login, remove @login_required." Not necessary. Could include "For production use HTTPS and CSRF_TRUSTED_ORIGINS." Not necessary but maybe note. Need final answer should be clear. Let's structure: 1. Short intro. 2. File tree. 3. Setup commands. 4. Code sections. 5. How to create user and run. 6. Notes. Let's ensure final code not missing `case_management/apps.py`. If startapp generates, fine. Could include: # case_management/apps.py from django.apps import AppConfig class CaseManagementConfig(AppConfig): default_auto_field = 'django.db.models.BigAutoField' name = 'case_management' This is optional. Include for completeness. Need if `case_management` has `__init__.py` from startapp. Good. Potential problem: In `case_management/backends.py`, inheriting from `ModelBackend` and overriding `authenticate` with email. `ModelBackend.authenticate` has `username` param. Our signature has `email` and password. Django's `authenticate` function calls backend.authenticate(request, **credentials). If credentials has email and password, our backend receives email, password. Good. If admin login sends username, ModelBackend handles. If login view sends email, EmailBackend handles. Good. Need maybe include `has_perm` etc inherited. Good. Could use `User.objects.get(email=email)` but if multiple same email, MultipleObjectsReturned. Use `.filter(email=email).first()` to avoid. Good. backends.py: class EmailBackend(ModelBackend): def authenticate(self, request, email=None, password=None, **kwargs): if not email or not password: return None user = User.objects.filter(email=email).first() if user is not None and user.check_password(password): return user return None Need maybe `user.is_active`? authenticate should return user even if inactive? Django's `login` will not allow inactive? Actually login does not check is_active? authenticate backends ModelBackend returns user if check_password, doesn't check is_active. Login view maybe? Django's login does not check is_active, but some checks? The `login` function doesn't. But `is_active` may be checked by `user_passes_test`? The `login_required` decorator doesn't check is_active? It uses `user_is_authenticated`. An inactive user has is_active False but is_authenticated True? In Django, User.is_authenticated returns True regardless of active? `is_active` is separate. Admin login checks user.is_active. To be safe, in backend: if user and user.is_active and user.check_password. Good. Add `if user is not None and user.is_active and user.check_password(password):`. Need maybe in forgot_password check `is_active=True`. Could include rate limiting? Not necessary. Now, if user logs in with email, after login redirect to home. Good. Let's maybe include a simple API alternative in a collapsible? Final answer plain text. Maybe after main: "If you actually need a JSON backend endpoint for a separate frontend, here is a minimal DRF login API." But user didn't ask. Could be helpful but may distract. Desired oververbosity 9, maybe include optional section. But ensure main answer not too long. We can include a short optional snippet: pip install djangorestframework serializers.py, views.py APIView, urls. But this adds length. The request likely simple. I'd avoid optional DRF unless explicitly API. But "backend" could be interpreted. Maybe include a note: "This is server-rendered. If you need a JSON API, tell me and I can provide a DRF endpoint." Not include code. Need maybe mention "The template is part of Django backend pages; if your frontend is separate, use the same authentication logic in an API view." Good. Let's verify template extends base and static load. In base, `{% load static %}` but not using static. It's okay. In login, no need load static. But if using base, block content. Good. base.html CSS includes .login-card, .logo, form, etc. For home separate. Let's write base.html fully: {% load static %} {% block title %}Case Management System{% endblock %} login.html: {% extends "case_management/base.html" %} {% block title %}Login | Case Management System{% endblock %} {% block content %} Forgot password {% endblock %} Need `{% load static %}` in login if using static in comment? The comment includes `{% static %}` but it's inside HTML comment, will be processed only if tag present. Since base loads static? Template tags need loaded in template where used. If login.html uses `{% static %}` inside comment, it needs `{% load static %}` at top. But it's in a comment, still a tag. To avoid, remove static tag from comment or add load. Let's add `{% load static %}` in login.html? If extends, can load. Or simpler comment without template tag: No static tag. Good. Then no need load static in login. Base has load static though not used. Fine. forgot_password.html: {% extends "case_management/base.html" %} {% block title %}Forgot password | Case Management System{% endblock %} {% block content %} Back to login {% endblock %} home.html: Home | Case Management System

Case Management Dashboard

Signed in as: {{ user.get_full_name|default:user.email }}

Logout

Need no template tags requiring load. Good. Need maybe if `user.email` empty, shows empty. Could use `user.username`. Use `{{ user.get_full_name|default:user.username }}`. home.html:

Signed in as: {{ user.get_full_name|default:user.username }}

Good. Need maybe include `case_management/templates/case_management/base.html` etc. Good. Let's think if `forms.Form` with EmailField and CharField will produce non_field_errors if authenticate invalid. We add form.add_error(None, ...). Good. Potential issue: The form fields are not rendered using {{ form.email }} but explicit inputs. The form still validates. Good. Need maybe include `name="email"` and `name="password"` match. Good. Need maybe include `value` for email. Good. Need maybe include password not preserved. Good. Potential issue: If form is invalid due to missing email, `form.email.value` maybe None. default ''. Good. Need maybe include if user already authenticated, login page redirects home? Could add: if request.user.is_authenticated: return redirect('home') Not necessary but nice. Add at top of login_page. Good. views.py: def login_page(request): if request.user.is_authenticated: return redirect('home') ... Good. Need maybe include logout view. Good. Need maybe include "next" param support. Good. Need maybe include security: `next_url.startswith('/') and not next_url.startswith('//')` prevents protocol-relative. Could also use `resolve_url` and ensure internal. This is okay. Could use `from django.urls import resolve_url` and `redirect_to`. But simple. Need maybe include `LOGIN_REDIRECT_URL` not used because manual redirect. But okay. Need maybe include `LOGOUT_REDIRECT_URL` not used. okay. Need maybe include "If you want to use Django's built-in login view instead, you can use AuthenticationForm." Not needed. Let's ensure no syntax errors in code blocks. Full final: ```bash pip install django django-admin startproject config . cd config python manage.py startapp case_management ``` Actually `cd config` not needed if manage.py in project root. `django-admin startproject config .` creates manage.py in current dir, config package. Then `python manage.py startapp case_management`. Good. Then file tree. Maybe include `BASE_DIR` in settings already. Good. Need if using Python 3.10? okay. Could include `python manage.py migrate` before create user. Create user: ```bash python manage.py shell ``` ```python from django.contrib.auth.models import User User.objects.create_user( username='case.manager', email='case.manager@example.com', password='YourStrongPassword123' ) ``` Or `createsuperuser`. Then `python manage.py runserver`, open `/login/`. Need maybe mention "For login, use the email address and password of the created user." Good. Potential issue: If creating user with username not email, email login works via backend. Good. Need maybe mention "If you want to use the same email for admin, add it in admin or create user." Good. Now, could there be a requirement "Python code for Django backend that creates a case management system LOGIN PAGE" meaning they want a view function that returns an HTML string? We can provide that as an alternative single-file code. But our full implementation is better. Maybe include a "minimal Python-only version" where view returns HTML string, no template. But not necessary. However if they specifically ask Python code, maybe they don't want separate HTML. We can include a version with template string in `views.py` to satisfy "Python code". But Django templates are standard. Could include an optional single-file view with `render` and template? Not needed. Let's consider creating a single-file `views.py` with HTML string using `Template` and `Context`. That would be all Python, but bad practice. The user likely expects Django code, templates allowed. Need maybe include "case management system" maybe later cases. Not needed. Let's think if we should include tests? Could include a simple test to ensure login page renders and login works. Overkill but desired oververbosity 9 maybe include optional test. But user asked code for login page. Adding tests may be helpful. But final already long. Maybe include a short test file? Could be too much. But thorough. Let's evaluate. Add `case_management/tests.py`: from django.test import TestCase from django.urls import reverse from django.contrib.auth.models import User class LoginPageTests(TestCase): def test_login_page_contains_required_layout_elements(self): response = self.client.get(reverse('login')) self.assertEqual(response.status_code, 200) self.assertContains(response, 'Email') self.assertContains(response, 'Password') self.assertContains(response, 'Login') self.assertContains(response, 'Forgot password') def test_login_with_email(self): User.objects.create_user(username='case.manager', email='case.manager@example.com', password='pass123') response = self.client.post(reverse('login'), {'email':'case.manager@example.com','password':'pass123'}, follow=True) self.assertEqual(response.status_code, 200) self.assertTrue(response.wsgi_request.user.is_authenticated) But need test user created with password 'pass123' may be invalid? create_user hashes. okay. Need password valid? no. Could include. But final length maybe large. It's okay. Maybe skip to keep focused. But oververbosity 9: include optional tests? Hmm. The user likely wants implementation, not tests. I can include a "Optional: add this test" at end. But maybe too much. Need maybe mention "The forgot password view currently sends a non-reset email; for production use Django's built-in password reset." This is important because our forgot password doesn't actually reset. We should state. Could also implement actual reset with built-in to avoid caveat. Let's revisit. If we include a placeholder forgot password, user may expect it works. The layout just requires link. But "Forgot password" implies functionality. To be robust, maybe implement Django built-in password reset with minimal templates. It would be more correct. Let's see code length. Built-in password reset requires: - urls for password_reset, done, confirm, complete. - templates: password_reset.html (form), password_reset_done.html, password_reset_confirm.html (form), password_reset_complete.html, password_reset_email.txt (email). - forms: use DefaultTokenGenerator? built-in views handle. - settings: PASSWORD_RESET_TIMEOUT maybe hours. EMAIL backend console. Templates can be simple. urls: from django.contrib.auth import views as auth_views path('password_reset/', auth_views.PasswordResetView.as_view( template_name='case_management/password_reset.html', email_template_name='case_management/password_reset_email.txt', ), name='password_reset'), path('password_reset/done/', auth_views.PasswordResetDoneView.as_view(template_name='case_management/password_reset_done.html'), name='password_reset_done'), path('reset///', auth_views.PasswordResetConfirmView.as_view(template_name='case_management/password_reset_confirm.html'), name='password_reset_confirm'), path('reset/done/', auth_views.PasswordResetCompleteView.as_view(template_name='case_management/password_reset_complete.html'), name='password_reset_complete'), Login template forgot link: href="{% url 'password_reset' %}". password_reset.html: {% extends "case_management/base.html" %} {% block title %}Reset password{% endblock %} {% block content %} Back to login {% endblock %} password_reset_done.html: {% extends "case_management/base.html" %} {% block title %}Reset link sent{% endblock %} {% block content %}

If an account exists for this email, a password reset link has been sent.

Back to login {% endblock %} Need .login-card text-align center, p inherits. Good. password_reset_confirm.html: {% extends "case_management/base.html" %} {% block title %}Set new password{% endblock %} {% block content %} {% if form.status_text %}

{% endif %}? Actually if invalid token, PasswordResetConfirmView sets form in status. It can render form with `form.status_text`? The view template context has `form`, `validlink`. If not validlink, we can show message. Use: {% if not validlink %}

This password reset link is invalid or has expired. Please request a new one.

Request new link {% else %} form... {% endif %} Good. password_reset_complete.html: {% extends base %} ...

Your password has been set. You can now log in.

Go to login password_reset_email.txt: {% load i18n %}{% autoescape off %} You are receiving this email because a password reset was requested for your Case Management System account. Please go to the following page and choose a new password: {{ protocol }}://{{ domain }}{% url 'password_reset_confirm' uidb64=uid token=token %} If you did not request a password reset, you can ignore this email. Your username: {{ user.get_username }} Case Management System {% endautoescape %} Need `password_reset_confirm` URL has uidb64 and token. Good. Need settings: PASSWORD_RESET_TIMEOUT = 3600? Optional. Add `PASSWORD_RESET_TIMEOUT = 60 * 60` (hours? It's seconds). Could include. Need email backend console. Good. This is more complete. But final code length increases. It's okay. Need maybe if using built-in password reset, the `PasswordResetView` uses form field email. It sends email using `send_mail`? It uses `PasswordResetForm` and `send_mail` with email_template. Good. Need maybe if no email backend, console prints. Good. Potential issue: The default `PasswordResetForm` validates email exists? It has `get_users` that yields active users with email. It doesn't error if no user? It may raise ValidationError if no user? Actually default PasswordResetForm: if user is inactive or email not set, ValidationError. But view may not reveal. It might show "Enter a valid email" if no user? Hmm. It uses `EmailAwarePasswordResetForm`? For default User, email not unique, may raise? Not critical. Need maybe include `PASSWORD_RESET_TIMEOUT` in settings. Good. Should we keep custom forgot_password view? No, use built-in. Remove from views and urls. Now, views.py: from django.contrib.auth import authenticate, login, logout from django.contrib.auth.decorators import login_required from django.shortcuts import redirect, render from django.urls import reverse from .forms import LoginForm No settings or send_mail. Good. Could include `login_page` with `if request.user.is_authenticated: return redirect('home')`. Now, base.html and login.html use password_reset URL. Good. Let's ensure URL names: `password_reset`, `password_reset_done`, `password_reset_confirm`, `password_reset_complete`. Good. Potential issue: In password_reset_email.txt, `{% url 'password_reset_confirm' uidb64=uid token=token %}`: The URL pattern is `reset///`. The view expects uidb64 and token. Good. Need maybe include `{{ protocol }}://{{ domain }}` in email. Good. Need maybe if domain not set, use `{{ domain }}`. In dev, domain is 127.0.0.1:8000? Actually `domain` is the domain from `Site` or `ALLOWED_HOSTS`? For email, Django uses `domain` from `Site` or settings? The context has `domain` from `get_current_site`. If no Site, maybe 'example.com'. In dev, console email may show example.com. Not critical. Could use `{% url 'password_reset_confirm' uidb64=uid token=token %}` with full domain from context. Fine. Need maybe include `ALLOWED_HOSTS` default. Fine. Now, if we use built-in password reset, we need templates. Good. Let's think about "LOGIN PAGE layout" with base.html: The base includes .login-card for all password reset pages. Good. Need maybe home.html not using base. Fine. Now, file tree should include password reset templates. File tree: case_management/ ├── backends.py ├── forms.py ├── views.py └── templates/case_management/ ├── base.html ├── login.html ├── home.html ├── password_reset.html ├── password_reset_done.html ├── password_reset_confirm.html ├── password_reset_complete.html └── password_reset_email.txt Good. Need maybe include `config/urls.py` with auth views. Good. Let's write final code carefully. Potential problem: In `password_reset_confirm.html`, the form field names are `new_password1` and `new_password2`. Good. The PasswordResetConfirmForm uses those. It may also have hidden? No. Need maybe if form invalid, re-enter values? Password fields not preserved. okay. Need maybe if `validlink` is False, show error. Good. password_reset_confirm.html: {% extends "case_management/base.html" %} {% block title %}Set new password | Case Management System{% endblock %} {% block content %} {% if validlink %} {% else %}

This password reset link is invalid or has expired.

Request a new reset link {% endif %} {% endblock %} Need `nonfield-error` class has text-align left, okay. password_reset_done.html and complete use p. Need CSS p { margin: 18px 0; color:#111827; } add to base CSS. Good. Add base CSS: p { margin: 16px 0 0; color: #111827; } .forgot { ... } Good. Now, `password_reset_email.txt` should be in templates/case_management/. Good. Need maybe include `i18n` load? Could skip. Use plain English. No need load. password_reset_email.txt: You are receiving this email because a password reset was requested for your Case Management System account. Please choose a new password: {{ protocol }}://{{ domain }}{% url 'password_reset_confirm' uidb64=uid token=token %} If you did not request a password reset, you can safely ignore this email. Your username: {{ user.get_username }} Case Management System Good. Need maybe include `{{ user.get_username }}` could be email? okay. Now, settings additions include PASSWORD_RESET_TIMEOUT = 60 * 60. Good. Potential issue: `auth_views.PasswordResetView` uses `template_name` and `email_template_name`. The default email subject is `Password reset`? It uses `subject_template_name='registration/password_reset_subject.txt'` by default. We can specify `subject_template_name='case_management/password_reset_subject.txt'` and provide. Or let default. Django default subject template may not exist? I think default subject template is in django/contrib/auth/templates/registration/password_reset_subject.txt? If not, could fail. Safer specify subject template. Add `password_reset_subject.txt` with `Password reset | Case Management System`. Then URL: auth_views.PasswordResetView.as_view( template_name='case_management/password_reset.html', email_template_name='case_management/password_reset_email.txt', subject_template_name='case_management/password_reset_subject.txt', ) Add file `password_reset_subject.txt`: Case Management System: password reset Good. Need maybe `PasswordResetConfirmView` uses `post_reset_login`? In Django 4.1? There is `post_reset_login` setting? Not necessary. Need maybe `PasswordResetConfirmView` uses `template_name`. Good. Now, do we need `LOGIN_REDIRECT_URL`? manual. okay. Let's test mentally login flow: - GET /login/ renders login.html. - POST /login/ with email/password. If valid, authenticate uses EmailBackend. login. redirect home. home @login_required renders home. - Forgot password: GET /password_reset/ renders password_reset.html. POST email, sends email to console with link /reset/uid/token/. User clicks, POST new password, then complete. Good. Need maybe if user email not unique, password reset form may choose one? `PasswordResetForm` by default uses `get_users` that yields users matching email. If multiple, it may use the first? It may raise? It doesn't care? It stores user in salt? Actually it uses `get_users` to get users with that email and then uses `user_email_authenticated`? It may choose first. Fine. Need maybe if using custom EmailBackend, password reset still by email. Good. Now, final answer should include all code. Need ensure not too verbose? It's okay. Let's write final with sections: "Below is a complete minimal Django implementation. It uses Django templates for the login page layout and Django auth for login/forgot password." Then "1. Create project/app". Commands: ```bash pip install django django-admin startproject config . python manage.py startapp case_management ``` "2. Project structure". "3. Code". Need maybe mention "Create static directory if you use your own logo; not required for placeholder." Good. Let's craft final code blocks with filenames. Double-check code for settings: `STATICFILES_DIRS` maybe not needed if using SVG. But include if they add logo. Good. `AUTHENTICATION_BACKENDS` includes ModelBackend and EmailBackend. Good. `AUTH_PASSWORD_VALIDATORS` default. Password reset forms validate. Good. Need maybe include `LANGUAGE_CODE`, `TIME_ZONE` default. no. Potential issue: In `backends.py`, importing `ModelBackend` and overriding `authenticate` with `email` param. The base `ModelBackend` also defines `user_can_authenticate`. Our method should call `self.user_can_authenticate(user)`? ModelBackend does. We can include: if user is not None and user.is_active and user.check_password(password): return user No need. But to be safe, use: if user is not None and user.check_password(password): return user But `user_can_authenticate` checks active. We'll include `user.is_active`. Code: from django.contrib.auth.backends import ModelBackend from django.contrib.auth.models import User class EmailBackend(ModelBackend): def authenticate(self, request, email=None, password=None, **kwargs): if not email or not password: return None user = User.objects.filter(email=email).first() if user is not None and user.is_active and user.check_password(password): return user return None Good. Need maybe `request` unused. okay. Views code: ``` from django.contrib.auth import authenticate, login, logout from django.contrib.auth.decorators import login_required from django.shortcuts import redirect, render from django.urls import reverse from .forms import LoginForm def login_page(request): if request.user.is_authenticated: return redirect('home') if request.method == 'POST': form = LoginForm(request.POST) if form.is_valid(): email = form.cleaned_data['email'].strip().lower() password = form.cleaned_data['password'] user = authenticate(request, email=email, password=password) if user is not None: login(request, user) next_url = request.GET.get('next') if next_url and next_url.startswith('/') and not next_url.startswith('//'): return redirect(next_url) return redirect(reverse('home')) form.add_error(None, 'Invalid email or password.') else: form = LoginForm() return render(request, 'case_management/login.html', {'form': form}) ``` Good. Need maybe if `next_url` is `/login/`? It will redirect to login? But user authenticated, then login_page would redirect home? Actually if next_url=/login/, after login redirect to /login/, then view sees authenticated and redirect home. okay. `logout_page` no POST required. Could add POST? Simple. Home view. Good. `config/urls.py` with auth_views. Good. Templates: Need ensure base.html has block title and content. Good. Let's write base.html final: ``` {% load static %} {% block title %}Case Management System{% endblock %} ``` Good. `login.html` uses SVG. Need no `{% load static %}`. Good. `password_reset.html` etc use same SVG. To avoid repeating SVG in each, could create a template include `logo.html`. That would be cleaner. Add `case_management/templates/case_management/_logo.html` with SVG. Then in each page: `{% include "case_management/_logo.html" %}`. This reduces duplication. Let's do that. It's an extra file but cleaner. _logo.html: ``` ``` Then login.html: `{% include "case_management/_logo.html" %}`. password_reset.html etc. Good. Need maybe if user wants real logo, replace `_logo.html` with `

`. Mention. Now templates: login.html: ``` {% extends "case_management/base.html" %} {% block title %}Login | Case Management System{% endblock %} {% block content %} {% include "case_management/_logo.html" %} Forgot password {% endblock %} ``` Good. password_reset.html similar. password_reset_done.html: ``` {% extends "case_management/base.html" %} {% block title %}Reset link sent | Case Management System{% endblock %} {% block content %} {% include "case_management/_logo.html" %}

If an account exists for this email address, a password reset link has been sent.

Back to login {% endblock %} ``` password_reset_confirm.html as above. password_reset_complete.html: ``` {% extends "case_management/base.html" %} {% block title %}Password reset complete{% endblock %} {% block content %} {% include "case_management/_logo.html" %}

Your password has been set. You can now log in.

Go to login {% endblock %} ``` home.html separate. Need maybe include `home.html` CSS. Good. Now, code length is substantial but okay. Need maybe mention "The placeholder logo is in `_logo.html`; replace it with your own logo file." Good. Need maybe mention "The email reset link will be printed to terminal because EMAIL_BACKEND is console." Good. Need maybe include "To create a user with email" command. Good. Let's check all URLs names used in templates: - login - home - logout - password_reset - password_reset_confirm - password_reset_done? not in templates except maybe not. - password_reset_complete? not in templates. Good. Need maybe if `password_reset_confirm` URL uses `uidb64` and `token` in email. Good. Potential issue: In `password_reset_email.txt`, if `domain` is not correct in dev, link may not work. But console. Fine. Need maybe include `ALLOWED_HOSTS` in production. Not necessary. Need maybe include "migrate" before create user. Good. Let's consider if using `auth_views.PasswordResetView` with custom EmailBackend? It doesn't use auth backend. Good. Potential issue: `PasswordResetView` form field name is `email`. In template we use id_email name email. Good. Potential issue: `PasswordResetConfirmView` form may have `new_password1` and `new_password2` fields, but also may have hidden fields? No. Potential issue: Password validators may require minimum length; if user enters short password, form errors display. Good. Need maybe include `form.non_field_errors` in confirm for invalid token? It might include. Good. Now, final answer should not mention analysis. Good. Let's produce final with code. But before final, let's think if there is any requirement to "write a Python code" singular. Our answer includes multiple files. Good. Could maybe include a "copy/paste" set of files. Good. Need maybe include "If you only need the login page without password reset, you can remove the password reset URLs/templates." Optional note. Let's include "Notes" at end: - The login page order matches requested layout. - The logo is a placeholder SVG; replace `_logo.html` with an `` if you have a logo file. - Forgot password uses Django's built-in reset flow; emails are printed to console in dev. - For production, configure real email and HTTPS. Good. Double-check code blocks indentation. Let's write final answer now. Ensure no missing closing tags. One more thought: `base.html` has `{% load static %}` but not using static. It's okay. If linter? no. `_logo.html` no extends. It is a snippet. Good. `home.html` uses `{% url 'logout' %}`. Need template tag no load. okay. `config/settings.py` code: We should show only additions, but maybe full? Additions enough. Need ensure `BASE_DIR` exists. Good. `case_management/apps.py` optional. Include. Let's include `case_management/backends.py` etc. Full final: ``` # case_management/apps.py from django.apps import AppConfig class CaseManagementConfig(AppConfig): default_auto_field = 'django.db.models.BigAutoField' name = 'case_management' ``` Good. Need maybe if `config/settings.py` `INSTALLED_APPS` add `'case_management'` or `'case_management.apps.CaseManagementConfig'`. Use `'case_management'` enough. If custom apps config, Django 3.2 auto uses if only one AppConfig? It can use name. Good. Potential issue: If `AUTHENTICATION_BACKENDS` includes `case_management.backends.EmailBackend`, the app must be importable. Good. Now, user create: If using `User.objects.create_user(username='case.manager', email='case.manager@example.com', password='...')`. Good. Need maybe mention `python manage.py createsuperuser` alternative and set email. Good. Let's include test user command after migrate. Need maybe mention access `/login/`. Good. Let's final. Below is a complete minimal Django backend implementation for a **Case Management System login page** with this exact layout order: 1. Logo at the top 2. Email field 3. Password field 4. “Login” button 5. “Forgot password” It includes: - Django login by **email** - Login page template - Logout - Home page after login - Working “Forgot password” flow using Django’s built-in password reset - Console email backend for development, so reset emails print in terminal --- ## 1. Create the project and app ```bash pip install django django-admin startproject config . python manage.py startapp case_management ``` Expected structure: ```text . ├── config/ │ ├── settings.py │ └── urls.py ├── case_management/ │ ├── __init__.py │ ├── apps.py │ ├── backends.py │ ├── forms.py │ ├── views.py │ └── templates/ │ └── case_management/ │ ├── _logo.html │ ├── base.html │ ├── login.html │ ├── home.html │ ├── password_reset.html │ ├── password_reset_done.html │ ├── password_reset_confirm.html │ ├── password_reset_complete.html │ ├── password_reset_email.txt │ └── password_reset_subject.txt └── manage.py ``` --- ## 2. Add to `config/settings.py` ```python # config/settings.py INSTALLED_APPS = [ 'django.contrib.admin', 'django.contrib.auth', 'django.contrib.contenttypes', 'django.contrib.sessions', 'django.contrib.messages', 'django.contrib.staticfiles', 'case_management', ] STATIC_URL = '/static/' # If you want to use your own logo file later: # STATICFILES_DIRS = [BASE_DIR / 'static'] # Allow login by email AUTHENTICATION_BACKENDS = [ 'django.contrib.auth.backends.ModelBackend', 'case_management.backends.EmailBackend', ] # Login URLs LOGIN_URL = '/login/' LOGIN_REDIRECT_URL = '/' LOGOUT_REDIRECT_URL = '/login/' # Password reset timeout in seconds, for example 1 hour PASSWORD_RESET_TIMEOUT = 60 * 60 # Development email backend: emails are printed to the terminal EMAIL_BACKEND = 'django.core.mail.backends.console.EmailBackend' DEFAULT_FROM_EMAIL = 'noreply@example.com' ``` --- ## 3. Create `case_management/apps.py` ```python # case_management/apps.py from django.apps import AppConfig class CaseManagementConfig(AppConfig): default_auto_field = 'django.db.models.BigAutoField' name = 'case_management' ``` --- ## 4. Create custom email authentication backend This lets users log in with their email address instead of a separate username. ```python # case_management/backends.py from django.contrib.auth.backends import ModelBackend from django.contrib.auth.models import User class EmailBackend(ModelBackend): def authenticate(self, request, email=None, password=None, **kwargs): if not email or not password: return None user = User.objects.filter(email=email).first() if user is not None and user.is_active and user.check_password(password): return user return None ``` --- ## 5. Create the login form ```python # case_management/forms.py from django import forms class LoginForm(forms.Form): email = forms.EmailField( label='Email', widget=forms.EmailInput(attrs={ 'placeholder': 'you@example.com' }) ) password = forms.CharField( label='Password', widget=forms.PasswordInput(attrs={ 'placeholder': 'Password' }) ) ``` --- ## 6. Create the views ```python # case_management/views.py from django.contrib.auth import authenticate, login, logout from django.contrib.auth.decorators import login_required from django.shortcuts import redirect, render from django.urls import reverse from .forms import LoginForm def login_page(request): if request.user.is_authenticated: return redirect('home') if request.method == 'POST': form = LoginForm(request.POST) if form.is_valid(): email = form.cleaned_data['email'].strip().lower() password = form.cleaned_data['password'] user = authenticate(request, email=email, password=password) if user is not None: login(request, user) next_url = request.GET.get('next') # Basic safe redirect check if next_url and next_url.startswith('/') and not next_url.startswith('//'): return redirect(next_url) return redirect(reverse('home')) form.add_error(None, 'Invalid email or password.') else: form = LoginForm() return render(request, 'case_management/login.html', { 'form': form, }) def logout_page(request): logout(request) return redirect('login') @login_required def home(request): return render(request, 'case_management/home.html') ``` --- ## 7. Create project URL configuration ```python # config/urls.py from django.contrib import admin from django.contrib.auth import views as auth_views from django.urls import path from case_management.views import home, login_page, logout_page urlpatterns = [ path('admin/', admin.site.urls), # Home path('', home, name='home'), # Login / logout path('login/', login_page, name='login'), path('logout/', logout_page, name='logout'), # Password reset path( 'password_reset/', auth_views.PasswordResetView.as_view( template_name='case_management/password_reset.html', email_template_name='case_management/password_reset_email.txt', subject_template_name='case_management/password_reset_subject.txt', ), name='password_reset', ), path( 'password_reset/done/', auth_views.PasswordResetDoneView.as_view( template_name='case_management/password_reset_done.html', ), name='password_reset_done', ), path( 'reset///', auth_views.PasswordResetConfirmView.as_view( template_name='case_management/password_reset_confirm.html', ), name='password_reset_confirm', ), path( 'reset/done/', auth_views.PasswordResetCompleteView.as_view( template_name='case_management/password_reset_complete.html', ), name='password_reset_complete', ), ] ``` --- ## 8. Create reusable base template ```html {# case_management/templates/case_management/base.html #} {% load static %} {% block title %}Case Management System{% endblock %} ``` --- ## 9. Create placeholder logo Replace this file if you want to use your own logo image. ```html {# case_management/templates/case_management/_logo.html #} ``` If you want to use a real logo instead, replace the contents of `_logo.html` with something like: ```html {% load static %}

``` And put `logo.png` in a `static/` folder. --- ## 10. Create the main login page template This matches your requested layout. ```html {# case_management/templates/case_management/login.html #} {% extends "case_management/base.html" %} {% block title %} Login | Case Management System {% endblock %} {% block content %} {% include "case_management/_logo.html" %} Forgot password {% endblock %} ``` --- ## 11. Create home/dashboard page after login ```html {# case_management/templates/case_management/home.html #} Home | Case Management System

Case Management Dashboard

Signed in as: {{ user.get_full_name|default:user.username }}

Logout

``` --- ## 12. Create password reset request template ```html {# case_management/templates/case_management/password_reset.html #} {% extends "case_management/base.html" %} {% block title %} Forgot password | Case Management System {% endblock %} {% block content %} {% include "case_management/_logo.html" %} Back to login {% endblock %} ``` --- ## 13. Create password reset done template ```html {# case_management/templates/case_management/password_reset_done.html #} {% extends "case_management/base.html" %} {% block title %} Reset link sent | Case Management System {% endblock %} {% block content %} {% include "case_management/_logo.html" %}

If an account exists for this email address, a password reset link has been sent.

Back to login {% endblock %} ``` --- ## 14. Create password reset confirm template ```html {# case_management/templates/case_management/password_reset_confirm.html #} {% extends "case_management/base.html" %} {% block title %} Set new password | Case Management System {% endblock %} {% block content %} {% include "case_management/_logo.html" %} {% if validlink %} {% else %}

This password reset link is invalid or has expired. Please request a new one.

Request a new reset link {% endif %} {% endblock %} ``` --- ## 15. Create password reset complete template ```html {# case_management/templates/case_management/password_reset_complete.html #} {% extends "case_management/base.html" %} {% block title %} Password reset complete | Case Management System {% endblock %} {% block content %} {% include "case_management/_logo.html" %}

Your password has been set. You can now log in.

Go to login {% endblock %} ``` --- ## 16. Create password reset email body ```text {# case_management/templates/case_management/password_reset_email.txt #} You are receiving this email because a password reset was requested for your Case Management System account. Please choose a new password: {{ protocol }}://{{ domain }}{% url 'password_reset_confirm' uidb64=uid token=token %} If you did not request a password reset, you can safely ignore this email. Your username: {{ user.get_username }} Case Management System ``` --- ## 17. Create password reset email subject ```text {# case_management/templates/case_management/password_reset_subject.txt #} Case Management System: password reset ``` --- ## 18. Run migrations ```bash python manage.py migrate ``` --- ## 19. Create a test user You can create a normal user whose login email is unique. ```bash python manage.py shell ``` Then in the Django shell: ```python from django.contrib.auth.models import User User.objects.create_user( username='case.manager', email='case.manager@example.com', password='YourStrongPassword123' ) ``` Exit the shell: ```python exit() ``` Or create a superuser: ```bash python manage.py createsuperuser ``` Make sure the user’s email address is filled in if you want to log in using email. --- ## 20. Run the server ```bash python manage.py runserver ``` Open: ```text http://127.0.0.1:8000/login/ ``` Log in using: ```text Email: case.manager@example.com Password: YourStrongPassword123 ``` --- ## Important notes - The login page layout is implemented in: ```text case_management/templates/case_management/login.html ``` - The logo is currently a placeholder SVG in: ```text case_management/templates/case_management/_logo.html ``` - The “Forgot password” link uses Django’s built-in password reset flow. - During development, password reset emails are printed to your terminal because of: ```python EMAIL_BACKEND = 'django.core.mail.backends.console.EmailBackend' ``` - For production, replace the email backend with a real email service such as SMTP, SendGrid, Mailgun, or Amazon SES.

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