[WEB-468] fix: issue detail endpoints

apiserver/plane/app/serializers/__init__.py

@@ -69,6 +69,9 @@
     RelatedIssueSerializer,
     IssuePublicSerializer,
     IssueDetailSerializer,
+    IssueReactionLiteSerializer,
+    IssueAttachmentLiteSerializer,
+    IssueLinkLiteSerializer,
 )
 
 from .module import (

apiserver/plane/app/serializers/base.py

@@ -58,9 +58,12 @@ def _filter_fields(self, fields):
                     IssueSerializer,
                     LabelSerializer,
                     CycleIssueSerializer,
-                    IssueFlatSerializer,
+                    IssueLiteSerializer,
                     IssueRelationSerializer,
-                    InboxIssueLiteSerializer
+                    InboxIssueLiteSerializer,
+                    IssueReactionLiteSerializer,
+                    IssueAttachmentLiteSerializer,
+                    IssueLinkLiteSerializer,
                 )
 
                 # Expansion mapper
@@ -79,12 +82,34 @@ def _filter_fields(self, fields):
                     "assignees": UserLiteSerializer,
                     "labels": LabelSerializer,
                     "issue_cycle": CycleIssueSerializer,
-                    "parent": IssueSerializer,
+                    "parent": IssueLiteSerializer,
                     "issue_relation": IssueRelationSerializer,
-                    "issue_inbox" : InboxIssueLiteSerializer,
+                    "issue_inbox": InboxIssueLiteSerializer,
+                    "issue_reactions": IssueReactionLiteSerializer,
+                    "issue_attachment": IssueAttachmentLiteSerializer,
+                    "issue_link": IssueLinkLiteSerializer,
+                    "sub_issues": IssueLiteSerializer,
                 }
-
-                self.fields[field] = expansion[field](many=True if field in ["members", "assignees", "labels", "issue_cycle", "issue_relation", "issue_inbox"] else False)            
+
+                self.fields[field] = expansion[field](
+                    many=(
+                        True
+                        if field
+                        in [
+                            "members",
+                            "assignees",
+                            "labels",
+                            "issue_cycle",
+                            "issue_relation",
+                            "issue_inbox",
+                            "issue_reactions",
+                            "issue_attachment",
+                            "issue_link",
+                            "sub_issues",
+                        ]
+                        else False
+                    )
+                )
 
         return self.fields
 
@@ -105,7 +130,11 @@ def to_representation(self, instance):
                         LabelSerializer,
                         CycleIssueSerializer,
                         IssueRelationSerializer,
-                        InboxIssueLiteSerializer
+                        InboxIssueLiteSerializer,
+                        IssueLiteSerializer,
+                        IssueReactionLiteSerializer,
+                        IssueAttachmentLiteSerializer,
+                        IssueLinkLiteSerializer,
                     )
 
                     # Expansion mapper
@@ -124,9 +153,13 @@ def to_representation(self, instance):
                         "assignees": UserLiteSerializer,
                         "labels": LabelSerializer,
                         "issue_cycle": CycleIssueSerializer,
-                        "parent": IssueSerializer,
+                        "parent": IssueLiteSerializer,
                         "issue_relation": IssueRelationSerializer,
-                        "issue_inbox" : InboxIssueLiteSerializer,
+                        "issue_inbox": InboxIssueLiteSerializer,
+                        "issue_reactions": IssueReactionLiteSerializer,
+                        "issue_attachment": IssueAttachmentLiteSerializer,
+                        "issue_link": IssueLinkLiteSerializer,
+                        "sub_issues": IssueLiteSerializer,
                     }
                     # Check if field in expansion then expand the field
                     if expand in expansion:

apiserver/plane/app/serializers/issue.py

@@ -444,6 +444,22 @@ def create(self, validated_data):
         return IssueLink.objects.create(**validated_data)
 
 
+class IssueLinkLiteSerializer(BaseSerializer):
+
+    class Meta:
+        model = IssueLink
+        fields = [
+            "id",
+            "issue_id",
+            "title",
+            "url",
+            "metadata",
+            "created_by_id",
+            "created_at",
+        ]
+        read_only_fields = fields
+
+
 class IssueAttachmentSerializer(BaseSerializer):
     class Meta:
         model = IssueAttachment
@@ -459,6 +475,21 @@ class Meta:
         ]
 
 
+class IssueAttachmentLiteSerializer(DynamicBaseSerializer):
+
+    class Meta:
+        model = IssueAttachment
+        fields = [
+            "id",
+            "asset",
+            "attributes",
+            "issue_id",
+            "updated_at",
+            "updated_by_id",
+        ]
+        read_only_fields = fields
+
+
 class IssueReactionSerializer(BaseSerializer):
     actor_detail = UserLiteSerializer(read_only=True, source="actor")
 
@@ -473,6 +504,18 @@ class Meta:
         ]
 
 
+class IssueReactionLiteSerializer(DynamicBaseSerializer):
+
+    class Meta:
+        model = IssueReaction
+        fields = [
+            "id",
+            "actor_id",
+            "issue_id",
+            "reaction",
+        ]
+
+
 class CommentReactionSerializer(BaseSerializer):
     class Meta:
         model = CommentReaction
@@ -606,48 +649,39 @@ class Meta:
         read_only_fields = fields
 
 
-
 class IssueDetailSerializer(IssueSerializer):
     description_html = serializers.CharField()
     is_subscribed = serializers.BooleanField(read_only=True)
 
     class Meta(IssueSerializer.Meta):
-        fields = IssueSerializer.Meta.fields + ["description_html", "is_subscribed"]
+        fields = IssueSerializer.Meta.fields + [
+            "description_html",
+            "is_subscribed",
+        ]
 
 
 class IssueLiteSerializer(DynamicBaseSerializer):
-    workspace_detail = WorkspaceLiteSerializer(
-        read_only=True, source="workspace"
-    )
-    project_detail = ProjectLiteSerializer(read_only=True, source="project")
-    state_detail = StateLiteSerializer(read_only=True, source="state")
-    label_details = LabelLiteSerializer(
-        read_only=True, source="labels", many=True
-    )
-    assignee_details = UserLiteSerializer(
-        read_only=True, source="assignees", many=True
-    )
-    sub_issues_count = serializers.IntegerField(read_only=True)
-    cycle_id = serializers.UUIDField(read_only=True)
-    module_id = serializers.UUIDField(read_only=True)
-    attachment_count = serializers.IntegerField(read_only=True)
-    link_count = serializers.IntegerField(read_only=True)
-    issue_reactions = IssueReactionSerializer(read_only=True, many=True)
 
     class Meta:
         model = Issue
-        fields = "__all__"
-        read_only_fields = [
-            "start_date",
-            "target_date",
-            "completed_at",
-            "workspace",
-            "project",
-            "created_by",
-            "updated_by",
-            "created_at",
-            "updated_at",
+        fields = [
+            "id",
+            "sequence_id",
+            "project_id",
         ]
+        read_only_fields = fields
+
+
+class IssueDetailSerializer(IssueSerializer):
+    description_html = serializers.CharField()
+    is_subscribed = serializers.BooleanField()
+
+    class Meta(IssueSerializer.Meta):
+        fields = IssueSerializer.Meta.fields + [
+            "description_html",
+            "is_subscribed",
+        ]
+        read_only_fields = fields
 
 
 class IssuePublicSerializer(BaseSerializer):

apiserver/plane/app/views/inbox.py

@@ -3,7 +3,7 @@
 
 # Django import
 from django.utils import timezone
-from django.db.models import Q, Count, OuterRef, Func, F, Prefetch
+from django.db.models import Q, Count, OuterRef, Func, F, Prefetch, Exists
 from django.core.serializers.json import DjangoJSONEncoder
 from django.contrib.postgres.aggregates import ArrayAgg
 from django.contrib.postgres.fields import ArrayField
@@ -25,13 +25,14 @@
     IssueLink,
     IssueAttachment,
     ProjectMember,
+    IssueReaction,
+    IssueSubscriber,
 )
 from plane.app.serializers import (
+    IssueCreateSerializer,
     IssueSerializer,
     InboxSerializer,
     InboxIssueSerializer,
-    IssueCreateSerializer,
-    IssueDetailSerializer,
 )
 from plane.utils.issue_filters import issue_filters
 from plane.bgtasks.issue_activites_task import issue_activity
@@ -385,9 +386,7 @@ def partial_update(self, request, slug, project_id, inbox_id, issue_id):
                         if state is not None:
                             issue.state = state
                             issue.save()
-                issue = self.get_queryset().filter(pk=issue_id).first()
-                serializer = IssueSerializer(issue, expand=self.expand)
-                return Response(serializer.data, status=status.HTTP_200_OK)
+                return Response(status=status.HTTP_204_NO_CONTENT)
             return Response(
                 serializer.errors, status=status.HTTP_400_BAD_REQUEST
             )
@@ -397,11 +396,45 @@ def partial_update(self, request, slug, project_id, inbox_id, issue_id):
             return Response(serializer.data, status=status.HTTP_200_OK)
 
     def retrieve(self, request, slug, project_id, inbox_id, issue_id):
-        issue = self.get_queryset().filter(pk=issue_id).first()
-        serializer = IssueDetailSerializer(
-            issue,
-            expand=self.expand,
-        )
+        issue = (
+            self.get_queryset()
+            .filter(pk=issue_id)
+            .prefetch_related(
+                Prefetch(
+                    "issue_reactions",
+                    queryset=IssueReaction.objects.select_related(
+                        "issue", "actor"
+                    ),
+                )
+            )
+            .prefetch_related(
+                Prefetch(
+                    "issue_attachment",
+                    queryset=IssueAttachment.objects.select_related("issue"),
+                )
+            )
+            .prefetch_related(
+                Prefetch(
+                    "issue_link",
+                    queryset=IssueLink.objects.select_related("created_by"),
+                )
+            )
+            .annotate(
+                is_subscribed=Exists(
+                    IssueSubscriber.objects.filter(
+                        workspace__slug=slug,
+                        project_id=project_id,
+                        issue_id=OuterRef("pk"),
+                        subscriber=request.user,
+                    )
+                )
+            )
+        ).first()
+
+        if issue is None:
+            return Response({"error": "Requested object was not found"}, status=status.HTTP_404_NOT_FOUND)
+
+        serializer = IssueSerializer(issue)
         return Response(serializer.data, status=status.HTTP_200_OK)
 
     def destroy(self, request, slug, project_id, inbox_id, issue_id):