Add user_story_extra_info to task serializer

taiga/projects/tasks/api.py

@@ -79,6 +79,7 @@ class TaskViewSet(OCCResourceMixin, VotedResourceMixin, HistoryResourceMixin,
     def get_queryset(self):
         qs = super().get_queryset()
         qs = qs.select_related("milestone",
+                               "user_story",
                                "project",
                                "status",
                                "owner",

taiga/projects/tasks/serializers.py

@@ -29,6 +29,17 @@ from taiga.projects.notifications.mixins import WatchedResourceSerializer
 from taiga.projects.tagging.serializers import TaggedInProjectResourceSerializer
 from taiga.projects.votes.mixins.serializers import VoteResourceSerializerMixin
 
+class UserStoryExtraInfoSerializer(serializers.LightSerializer):
+    id = Field()
+    ref = Field()
+    subject = Field()
+
+    def to_value(self, instance):
+        if instance is None:
+            return None
+
+        return super().to_value(instance)
+
 
 class TaskListSerializer(VoteResourceSerializerMixin, WatchedResourceSerializer,
                          OwnerExtraInfoSerializerMixin, AssignedToExtraInfoSerializerMixin,
@@ -54,6 +65,7 @@ class TaskListSerializer(VoteResourceSerializerMixin, WatchedResourceSerializer,
     is_blocked = Field()
     blocked_note = Field()
     is_closed = MethodField()
+    user_story_extra_info = UserStoryExtraInfoSerializer(attr="user_story")
 
     def get_milestone_slug(self, obj):
         return obj.milestone.slug if obj.milestone else None