Fix type field for ContentSerializer

api/v1/serializers/content.py

@@ -199,11 +199,15 @@ class GallerySerializer(serializers.ModelSerializer):
 
 
 class ContentSerializer(serializers.ModelSerializer):
+    type = serializers.SerializerMethodField()
 
     class Meta:
         model = Content
         fields = BASE_CONTENT_FIELDS
 
+    def get_type(self, object):
+        return 'content'
+
     def to_representation(self, obj):
         if isinstance(obj, Image):
             return ImageSerializer(obj, context=self.context).to_representation(obj)