moved to meta class

Author: Iamshankhadeep

readthedocs/api/v3/serializers.py

@@ -115,9 +115,6 @@ class BuildSerializer(FlexFieldsModelSerializer):
     state = BuildStateSerializer(source='*')
     _links = BuildLinksSerializer(source='*')
 
-    expandable_fields = {
-        'config': (BuildConfigSerializer, {'source': 'config'})
-    }
 
     class Meta:
         model = Build
@@ -135,6 +132,10 @@ class Meta:
             '_links',
         ]
 
+        expandable_fields = {
+            'config': (BuildConfigSerializer, {'source': 'config'})
+        }
+
     def get_finished(self, obj):
         if obj.date and obj.length:
             return obj.date + datetime.timedelta(seconds=obj.length)
@@ -210,10 +211,6 @@ class VersionSerializer(FlexFieldsModelSerializer):
     urls = VersionURLsSerializer(source='*')
     _links = VersionLinksSerializer(source='*')
 
-    expandable_fields = {
-        'last_build': (BuildSerializer, {'source': 'last_build'})
-    }
-
     class Meta:
         model = Version
         fields = [
@@ -231,6 +228,12 @@ class Meta:
             '_links',
         ]
 
+        expandable_fields = {
+            'last_build': (
+                BuildSerializer, {'source': 'last_build'}
+            )
+        }
+
     def get_downloads(self, obj):
         downloads = obj.get_downloads()
         data = {}
@@ -438,17 +441,6 @@ class ProjectSerializer(FlexFieldsModelSerializer):
     created = serializers.DateTimeField(source='pub_date')
     modified = serializers.DateTimeField(source='modified_date')
 
-    expandable_fields = {
-        'active_versions': (
-            VersionSerializer,
-            {
-                # NOTE: this has to be a Model method, can't be a
-                # ``SerializerMethodField`` as far as I know
-                'source': 'active_versions',
-                'many': True,
-            }
-        )
-    }
 
     class Meta:
         model = Project
@@ -479,6 +471,17 @@ class Meta:
             '_links',
         ]
 
+        expandable_fields = {
+            'active_versions': (VersionSerializer,
+                {
+                # NOTE: this has to be a Model method, can't be a
+                # ``SerializerMethodField`` as far as I know
+                'source': 'active_versions',
+                'many': True,
+                }
+            )
+        }
+
     def get_homepage(self, obj):
         # Overridden only to return ``None`` when the project_url is ``''``
         return obj.project_url or None