Tags added.

app/core/admin.py

@@ -42,4 +42,5 @@ class UserAdminManager(UserAdmin):
 
 admin.site.register(models.User,UserAdminManager)
 admin.site.register(models.Recipe)
+admin.site.register(models.Tag)
 

app/core/migrations/0003_auto_20230920_1403.py

@@ -0,0 +1,28 @@
+# Generated by Django 3.2.21 on 2023-09-20 14:03
+
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('core', '0002_recipe'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Tag',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('name', models.CharField(max_length=255)),
+                ('user', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL)),
+            ],
+        ),
+        migrations.AddField(
+            model_name='recipe',
+            name='tag',
+            field=models.ManyToManyField(to='core.Tag'),
+        ),
+    ]

app/core/models.py

@@ -42,14 +42,24 @@ class User(AbstractBaseUser,PermissionsMixin):
 
     USERNAME_FIELD='email'
 
+class Tag(models.Model):
+    """Tag to be used for a recipe"""
+    name=models.CharField(max_length=255)
+    user=models.ForeignKey(settings.AUTH_USER_MODEL,on_delete=models.CASCADE)
+
+    def __str__(self):
+        return self.name
+
 class Recipe(models.Model):
     user= models.ForeignKey(settings.AUTH_USER_MODEL,on_delete=models.CASCADE)
     title=models.CharField(max_length=255)
     description=models.TextField(blank=True)
     time_minutes=models.IntegerField()
     price=models.DecimalField(max_digits=5, decimal_places=2)
     link= models.CharField(max_length=255,blank=True)
+    tag=models.ManyToManyField('Tag')
 
     def __str__(self):
         return self.title
 
+

app/recipe/serializers.py

@@ -1,13 +1,46 @@
 from rest_framework import serializers
-from core.models import Recipe
+from core.models import Recipe,Tag
 
+
+class TagSerialzer(serializers.ModelSerializer):
+    class Meta:
+        model=Tag
+        fields=['id','name']
+        read_only_fields=['id']
 class RecipeSerializer(serializers.ModelSerializer):
+    tags = TagSerialzer(many=True,required=False)
     class Meta:
         model=Recipe
-        fields=('id','title','price','link')
-        read_only_fields=('id',)
+        fields=['id','title','time_minutes','price','link','tags']
+        read_only_fields=['id']
+    def _get_or_create_tags(self,tags,recipe):
+        auth_user=self.context['request'].user
+        for tag in tags:
+            tag_obj,created=Tag.objects.get_or_create(user=auth_user,**tag)
+            recipe.tags.add(tag_obj)
 
-class RecipeDetailSerializer(serializers.ModelSerializer):
-    class Meta:
-        model=Recipe
-        fields=('id','title','description','time_minutes','price','link')
+    def create(self, validated_data):
+        tags=validated_data.pop('tags',[])
+        recipe=Recipe.objects.create(**validated_data)
+        self._get_or_create_tags(tags,recipe)
+        return recipe
+    def update(self,instance,validated_data):
+        tags= validated_data.pop('tags',None)
+        if tags is not None:
+            instance.tags.clear()
+            self._get_or_create_tags(tags,instance)
+        for attr,value in validated_data.items():
+            setattr(instance,attr,value)
+        instance.save()
+        return instance
+
+
+
+class RecipeDetailSerializer(RecipeSerializer):
+    """Serializer for recipe detail view."""
+
+    class Meta(RecipeSerializer.Meta):
+        fields = RecipeSerializer.Meta.fields + ['description']
+
+
+

app/recipe/urls.py

@@ -5,9 +5,9 @@
 from rest_framework.routers import DefaultRouter
 
 router=DefaultRouter()
-router.register('',views.RecipeViewSet)
-
+router.register('recipes',views.RecipeViewSet)
+router.register('tags',views.TagViewSet)
 
 urlpatterns = [
-    path('recipes/',include(router.urls))
+    path('',include(router.urls))
 ]

app/recipe/views.py

@@ -1,7 +1,7 @@
-from rest_framework import viewsets 
+from rest_framework import viewsets,mixins 
 from rest_framework.authentication import TokenAuthentication
 from rest_framework.permissions import IsAuthenticated
-from core.models import Recipe
+from core.models import Recipe,Tag
 from recipe import serializers
 
 
@@ -25,5 +25,20 @@ def perform_create(self, serializer):
         """Create a new recipe for the current auth user"""
         serializer.save(user=self.request.user)
 
+# Generic viewset with mixins to reuse functionality
+class TagViewSet(mixins.UpdateModelMixin,mixins.DestroyModelMixin,mixins.ListModelMixin,viewsets.GenericViewSet): 
+    serializer_class=serializers.TagSerialzer
+    queryset=Tag.objects.all()
+    authentication_classes=[TokenAuthentication]
+    permission_classes=[IsAuthenticated]
+    def get_queryset(self):
+        """Show only tags for the current auth user"""
+        return self.queryset.filter(user=self.request.user).order_by('-id')
+
+
+
+
+
+