add: add new model and api for products

.dockerignore

@@ -0,0 +1 @@
+venv

core/apps/products/admin/product.py

@@ -2,10 +2,15 @@ from django.contrib import admin
 
 from modeltranslation.admin import TranslationAdmin
 
-from core.apps.products.models import Product
+from core.apps.products.models import Product, Unity
 
 
 @admin.register(Product)
 class ProductAdmin(TranslationAdmin):
     list_display = ['id', 'name', 'price', 'category']
     list_filter = ['category']
+
+
+@admin.register(Unity)
+class UnityAdmin(admin.ModelAdmin):
+    list_display = ['id', 'name']

core/apps/products/migrations/0003_unity_product_unity.py

@@ -0,0 +1,32 @@
+# Generated by Django 5.2 on 2025-09-02 14:04
+
+import django.db.models.deletion
+import uuid
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('products', '0002_category_name_ru_category_name_uz_and_more'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Unity',
+            fields=[
+                ('id', models.UUIDField(default=uuid.uuid4, editable=False, primary_key=True, serialize=False, unique=True)),
+                ('created_at', models.DateTimeField(auto_now_add=True)),
+                ('name', models.CharField(max_length=200)),
+            ],
+            options={
+                'verbose_name': 'Birlik',
+                'verbose_name_plural': 'Birliklar',
+            },
+        ),
+        migrations.AddField(
+            model_name='product',
+            name='unity',
+            field=models.ForeignKey(null=True, on_delete=django.db.models.deletion.CASCADE, related_name='products', to='products.unity'),
+        ),
+    ]

core/apps/products/models/product.py

@@ -4,12 +4,24 @@ from core.apps.shared.models.base import BaseModel
 from core.apps.products.models import Category
 
 
+class Unity(BaseModel):
+    name = models.CharField(max_length=200)
+    
+    def __str__(self):
+        return self.name
+    
+    class Meta:
+        verbose_name = 'Birlik'
+        verbose_name_plural = 'Birliklar'
+
+
 class Product(BaseModel):
     name = models.CharField(max_length=200)
     image = models.ImageField(upload_to='products/product/')
     category = models.ForeignKey(Category, on_delete=models.CASCADE, related_name='products')
     price = models.PositiveBigIntegerField()
     description = models.TextField(null=True, blank=True)
+    unity = models.ForeignKey(Unity, on_delete=models.CASCADE, related_name='products', null=True)
 
     def __str__(self):
         return self.name
@@ -17,4 +29,3 @@ class Product(BaseModel):
     class Meta:
         verbose_name = 'Mahsulot'
         verbose_name_plural = 'Mahsulotlar'
-

core/apps/products/serializers/product.py

@@ -6,12 +6,19 @@ from core.apps.accounts.models import Like
 
 class ProductListSerializer(serializers.ModelSerializer):
     liked = serializers.SerializerMethodField(method_name='get_liked')
+    unity = serializers.SerializerMethodField(method_name='get_unity')
 
     class Meta:
         model = Product
         fields = [
-            'id', 'name', 'image', 'price', 'description', 'liked'
+            'id', 'name', 'image', 'price', 'description', 'liked', 'unity',
         ]
 
     def get_liked(self, obj):
         return Like.objects.filter(user=self.context.get('user'), product=obj).exists()
+    
+    def get_unity(self, obj):
+        return {
+            'id': obj.unity.id,
+            'name': obj.unity.name,
+        }

core/apps/products/urls.py

@@ -14,6 +14,7 @@ urlpatterns = [
         [
             path('<uuid:category_id>/list/', product_views.ProductListApiView.as_view()),
             path('list/', product_views.ProductsApiView.as_view()),
+            path('<uuid:id>/', product_views.ProductDetailApiView.as_view()),
         ]
     )),
     path('search/', search_views.SearchApiView.as_view()),

core/apps/products/views/product.py

@@ -9,12 +9,12 @@ from core.apps.products.serializers import product as serializers
 
 class ProductListApiView(generics.GenericAPIView):
     serializer_class = serializers.ProductListSerializer
-    queryset = Product.objects.all()
+    queryset = Product.objects.select_related('unity')
     permission_classes = []
 
     def get(self, request, category_id):
         category = get_object_or_404(Category, id=category_id)
-        products = Product.objects.filter(category=category)
+        products = Product.objects.filter(category=category).select_related('unity')
         page = self.paginate_queryset(products)
         if page is not None:
             serializer = self.serializer_class(page, many=True, context={'user': request.user})
@@ -25,14 +25,25 @@ class ProductListApiView(generics.GenericAPIView):
 
 class ProductsApiView(generics.GenericAPIView):
     serializer_class = serializers.ProductListSerializer
-    queryset = Product.objects.all()
+    queryset = Product.objects.select_related('unity')
     permission_classes = []
 
     def get(self, request):
-        products = Product.objects.all()
+        products = self.queryset
         page = self.paginate_queryset(products)
         if page is not None:
             serializer = self.serializer_class(page, many=True)
             return self.get_paginated_response(serializer.data)
         serializer = self.serializer_class(products, many=True)
         return Response(serializer.data, status=200)
+    
+
+class ProductDetailApiView(generics.GenericAPIView):
+    serializer_class = serializers.ProductListSerializer
+    queryset = Product.objects.select_related('unity')
+    permission_classes = []
+
+    def get(self, request, id):
+        product = get_object_or_404(Product, id=id)
+        serializer = self.serializer_class(product)
+        return Response(serializer.data, status=200)