Add django-simpler.md

django-simpler.md

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+```python
+# models.py
+from django.contrib.auth.models import User
+from django.db import models
+
+class Profile(models.Model):
+    class Role(models.TextChoices):
+        USER = 'user'
+        MODERATOR = 'moderator'
+        ADMIN = 'admin'
+
+    user = models.OneToOneField(User, on_delete=models.CASCADE)
+    bio = models.CharField(max_length=500, blank=True)
+    role = models.CharField(max_length=20, choices=Role.choices, default=Role.USER)
+    verification_code = models.CharField(max_length=6, blank=True, null=True)
+
+    def __str__(self):
+        return self.user.username
+```
+
+
+```python
+# serializers.py
+from rest_framework import serializers
+from django.contrib.auth.models import User
+from .models import Profile
+
+class UserSerializer(serializers.ModelSerializer):
+    bio = serializers.CharField(source='profile.bio', allow_blank=True)
+    role = serializers.CharField(source='profile.role', read_only=True)
+
+    class Meta:
+        model = User
+        fields = ['id', 'username', 'bio', 'role', 'email']
+        read_only_fields = ['id', 'role']
+
+class RegisterSerializer(serializers.Serializer):
+    username = serializers.CharField(max_length=150)
+    email = serializers.EmailField()
+
+    def validate_username(self, value):
+        if User.objects.filter(username=value).exists():
+            raise serializers.ValidationError("Username already taken.")
+        return value
+
+    def validate_email(self, value):
+        if User.objects.filter(email=value).exists():
+            raise serializers.ValidationError("Email already registered.")
+        return value
+```
+
+
+```python
+# permissions.py
+from rest_framework import permissions
+
+class IsUser(permissions.BasePermission):
+    def has_permission(self, request, view):
+        return (
+            request.user and 
+            request.user.is_authenticated and 
+            hasattr(request.user, 'profile') and 
+            request.user.profile.role == 'user'
+        )
+
+class IsModerator(permissions.BasePermission):
+    def has_permission(self, request, view):
+        return (
+            request.user and 
+            request.user.is_authenticated and 
+            hasattr(request.user, 'profile') and 
+            request.user.profile.role in ['moderator', 'admin']
+        )
+
+class IsAdmin(permissions.BasePermission):
+    def has_permission(self, request, view):
+        return (
+            request.user and 
+            request.user.is_authenticated and 
+            hasattr(request.user, 'profile') and 
+            request.user.profile.role == 'admin'
+        )
+```
+
+
+```python
+# views.py
+from rest_framework.views import APIView
+from rest_framework.response import Response
+from rest_framework.permissions import AllowAny, IsAuthenticated
+from rest_framework_simplejwt.tokens import RefreshToken
+from django.contrib.auth.models import User
+from django.core.mail import send_mail
+from django.conf import settings
+from random import randint
+from .serializers import UserSerializer, RegisterSerializer
+
+class RegisterView(APIView):
+    permission_classes = [AllowAny]
+
+    def post(self, request):
+        serializer = RegisterSerializer(data=request.data)
+        if not serializer.is_valid():
+            return Response(serializer.errors, status=400)
+
+        data = serializer.validated_data
+        user = User.objects.create_user(
+            username=data['username'],
+            email=data['email']
+        )
+        profile = Profile.objects.create(user=user, bio='')
+
+        code = str(randint(100000, 999999))
+        profile.verification_code = code
+        profile.save()
+
+        send_mail(
+            subject="Your verification code",
+            message=f"Your code is: {code}",
+            recipient_list=[user.email],
+            from_email=settings.DEFAULT_FROM_EMAIL
+        )
+
+        return Response({
+            'username': user.username,
+            'email': user.email
+        }, status=201)
+
+class AuthView(APIView):
+    permission_classes = [AllowAny]
+
+    def post(self, request):
+        username = request.data.get('username')
+        code = request.data.get('code')
+
+        if not username or not code:
+            return Response({'error': 'Username and code required'}, status=400)
+
+        try:
+            user = User.objects.get(username=username)
+            profile = user.profile
+        except User.DoesNotExist:
+            return Response({'error': 'Invalid credentials'}, status=401)
+
+        if profile.verification_code != code:
+            return Response({'error': 'Invalid code'}, status=401)
+
+        refresh = RefreshToken.for_user(user)
+        return Response({
+            'refresh': str(refresh),
+            'access': str(refresh.access_token),
+        })
+
+class UserProfileView(APIView):
+    permission_classes = [IsAuthenticated]
+
+    def get(self, request):
+        serializer = UserSerializer(request.user)
+        return Response(serializer.data)
+```
+
+
+```python
+# urls.py
+from django.urls import path
+from . import views
+
+urlpatterns = [
+    path('register/', views.RegisterView.as_view(), name='register'),
+    path('auth/', views.AuthView.as_view(), name='auth'),
+    path('profile/', views.UserProfileView.as_view(), name='profile'),
+]
+```
+
+
+```python
+# settings.py (additions)
+"""
+INSTALLED_APPS = [
+    ...
+    'rest_framework',
+    'rest_framework_simplejwt',
+    'your_app_name',
+]
+
+REST_FRAMEWORK = {
+    'DEFAULT_AUTHENTICATION_CLASSES': (
+        'rest_framework_simplejwt.authentication.JWTAuthentication',
+    ),
+    'DEFAULT_PERMISSION_CLASSES': [
+        'rest_framework.permissions.IsAuthenticated',
+    ],
+}
+
+from datetime import timedelta
+SIMPLE_JWT = {
+    'ACCESS_TOKEN_LIFETIME': timedelta(minutes=60),
+    'REFRESH_TOKEN_LIFETIME': timedelta(days=1),
+}
+
+EMAIL_BACKEND = 'django.core.mail.backends.smtp.EmailBackend'
+EMAIL_HOST = 'smtp.gmail.com'
+EMAIL_PORT = 587
+EMAIL_USE_TLS = True
+EMAIL_HOST_USER = 'your@email.com'
+EMAIL_HOST_PASSWORD = 'yourpassword'
+DEFAULT_FROM_EMAIL = EMAIL_HOST_USER
+"""
+```