Implementing User Authentication in Django
🔐 Implementing User Authentication in Django
A Step-by-Step Guide (Login, Logout, and Registration)
✅ What is User Authentication?
Authentication means verifying the identity of a user. In a Django web app, it typically includes:
User Registration (Sign Up)
User Login
User Logout
Password Management
Django provides built-in support for all of these using the django.contrib.auth framework.
🛠️ Step 1: Create a Django Project and App
bash
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django-admin startproject myproject
cd myproject
python manage.py startapp accounts
Add 'accounts' and 'django.contrib.auth' to your INSTALLED_APPS in settings.py:
python
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INSTALLED_APPS = [
...
'accounts',
'django.contrib.auth',
]
🧩 Step 2: URLs and Views Setup
Create accounts/urls.py:
python
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from django.urls import path
from . import views
from django.contrib.auth import views as auth_views
urlpatterns = [
path('login/', auth_views.LoginView.as_view(template_name='accounts/login.html'), name='login'),
path('logout/', auth_views.LogoutView.as_view(), name='logout'),
path('register/', views.register, name='register'),
]
Include in the main myproject/urls.py:
python
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from django.contrib import admin
from django.urls import path, include
urlpatterns = [
path('admin/', admin.site.urls),
path('accounts/', include('accounts.urls')),
]
🧠 Step 3: Create User Registration View
accounts/views.py
python
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from django.contrib.auth.forms import UserCreationForm
from django.shortcuts import render, redirect
def register(request):
if request.method == 'POST':
form = UserCreationForm(request.POST)
if form.is_valid():
form.save()
return redirect('login')
else:
form = UserCreationForm()
return render(request, 'accounts/register.html', {'form': form})
🗂️ Step 4: Templates (HTML Pages)
Create a folder templates/accounts/ and add these files:
register.html
html
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<h2>Register</h2>
<form method="POST">
{% csrf_token %}
{{ form.as_p }}
<button type="submit">Register</button>
</form>
login.html
html
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<h2>Login</h2>
<form method="POST">
{% csrf_token %}
{{ form.as_p }}
<button type="submit">Login</button>
</form>
Optional: Add a logout success redirect in settings.py
python
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LOGIN_REDIRECT_URL = '/'
LOGOUT_REDIRECT_URL = '/accounts/login/'
🔑 Step 5: Protecting Views with Login Required
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from django.contrib.auth.decorators import login_required
@login_required
def dashboard(request):
return render(request, 'accounts/dashboard.html')
🧪 Step 6: Run and Test
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python manage.py makemigrations
python manage.py migrate
python manage.py runserver
Go to /accounts/register/ to create a user
Go to /accounts/login/ to log in
Go to /accounts/logout/ to log out
✅ Bonus: Use django-allauth for Social Login
If you want GitHub, Google, or Facebook login:
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pip install django-allauth
(Detailed setup available on request)
🧭 Summary
Feature Tool / Function
Registration UserCreationForm, custom view
Login LoginView from django.contrib.auth.views
Logout LogoutView
Templates Custom HTML under templates/accounts/
Auth Middleware Enabled by default (AuthenticationMiddleware)
URL Handling include() in main urls.py
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