[UPD] project_api : in task service read_group resolve lazy project_i…

…d as well

project_api/services/task.py

@@ -160,9 +160,12 @@ def read_group(
                 group["stage_name"] = group.pop("stage_id")[1]._value
                 group["stage_name_count"] = group.pop("stage_id_count")
         # TODO find a better way to resolve lazy value
+        fields_to_resolve = ("stage_id", "project_id")
         for group in groups:
-            if "stage_id" in group:
-                group["stage_id"] = (group["stage_id"][0], group["stage_id"][1]._value)
+            for field in fields_to_resolve:
+                if field in group:
+                    val = group[field]
+                    group[field] = val and (val[0], val[1]._value)
         return groups
 
     def create(self, assignee_customer=None, **params):