校友信息管理系统中的开源实践与社区协作

                # settings.py
                INSTALLED_APPS = [
                    ...
                    'django.contrib.auth',
                    'django.contrib.contenttypes',
                    ...
                ]
                
                # urls.py
                from django.urls import path
                from . import views
                
                urlpatterns = [
                    path('login/', views.login_view, name='login'),
                    ...
                ]
                
                # views.py
                from django.contrib.auth import authenticate, login
                from django.shortcuts import render, redirect
                
                def login_view(request):
                    if request.method == "POST":
                        username = request.POST['username']
                        password = request.POST['password']
                        user = authenticate(request, username=username, password=password)
                        if user is not None:
                            login(request, user)
                            return redirect('home')
                        else:
                            # Return an 'invalid login' error message.
                            return render(request, 'login.html', {'error': 'Invalid credentials'})
                    else:
                        return render(request, 'login.html')