Add PostListSerializer

market/models.py

@@ -56,7 +56,7 @@ class Post(models.Model):
         ordering = ["-written_at"]
 
     def __str__(self):
-        return self.product.name
+        return f"{self.product} : {self.author} : {self.written_at}"
 
 
 class Image(models.Model):
@@ -65,5 +65,8 @@ class Image(models.Model):
     )
     image = models.ImageField(upload_to="images", blank=True, null=True)
 
+    class Meta:
+        ordering = ["-pk"]
+
     def __str__(self):
-        return self.post.product.name
+        return f"{self.post}"

market/serializers.py

@@ -44,6 +44,33 @@ class ImageSerializer(ModelSerializer):
         fields = ("image",)
 
 
+class PostListSerializer(ModelSerializer):
+    product = ProductListSerializer(read_only=True)
+    nickname = serializers.CharField(source="author.nickname")
+    image = serializers.SerializerMethodField()
+    storage = serializers.CharField(source="storage.storage")
+
+    class Meta:
+        model = Post
+        fields = (
+            "id",
+            "product",
+            "storage",
+            "price",
+            "text",
+            "nickname",
+            "status",
+            "written_at",
+            "image",
+        )
+
+    def get_image(self, obj):
+        first_image = obj.images.first()
+        return ImageSerializer(
+            instance=first_image, context=self.context
+        ).data["image"]
+
+
 class PostSerializer(ModelSerializer):
     product = ProductListSerializer(read_only=True)
     nickname = serializers.CharField(source="author.nickname")

market/viewsets.py

@@ -10,6 +10,7 @@ from market.serializers import (
     BrandSerializer,
     ProductSerializer,
     PostSerializer,
+    PostListSerializer,
 )
 
 
@@ -53,6 +54,9 @@ class PostViewset(ActionBasedMixin, ModelViewSet):
         .prefetch_related("images")
     )
     serializer_class = PostSerializer
+    serializer_class_map = {
+        "list": PostListSerializer,
+    }
     permission_classes = [IsAuthenticated, IsAuthorOrReadOnly]
     permission_classes_map = {
         "list": [AllowAny],