diff --git a/models/Campus.py b/models/Campus.py
index f4e9cef..dd910de 100644
--- a/models/Campus.py
+++ b/models/Campus.py
@@ -14,7 +14,8 @@ class Campus(db.Model):
         data = {'title': self.title,
                 'email_ending': self.email_ending,
                 'master_user_id': self.master_user_id,
-                'avatar_url': self.avatar_url
+                'avatar_url': self.avatar_url,
+                'id' : self.key().id()
                 }
         return json.dumps(data)
 
diff --git a/models/Course.py b/models/Course.py
index fd2dc08..e2a6b7c 100644
--- a/models/Course.py
+++ b/models/Course.py
@@ -25,6 +25,7 @@ class Course(db.Model):
                     'year': self.endDate.year,
                     'month': self.endDate.month,
                     'day': self.endDate.day,
-                }
-                }
+                },
+                'id' : self.key().id()
+        }
         return json.dumps(data)
diff --git a/models/Message.py b/models/Message.py
index fa1a456..a5dc29f 100644
--- a/models/Message.py
+++ b/models/Message.py
@@ -18,6 +18,7 @@ class Message(db.Model):
                     'day': self.msgDate.day,
                     'hour': self.msgDate.hour,
                     'minute': self.msgDate.minute
-                }
+                },
+                'id' : self.key().id()
         }
         return json.dumps(data)
diff --git a/models/Project.py b/models/Project.py
index 579ecdd..4e6cacb 100644
--- a/models/Project.py
+++ b/models/Project.py
@@ -20,5 +20,6 @@ class Project(db.Model):
                 'logo_url' : self.logo_url,
                 'gitRepository' : self.gitRepository,
                 'membersId' : self.membersId,
+                'id' : self.key().id()
                 }
         return json.dumps(data)
diff --git a/models/Task.py b/models/Task.py
index 292ac0d..cdbaae9 100644
--- a/models/Task.py
+++ b/models/Task.py
@@ -21,6 +21,7 @@ class Task(db.Model):
                     'day': self.dueDate.day
                 },
                 'isPersonal' : self.isPersonal,
+                'id' : self.key().id()
                 }
         return json.dumps(data)
 
diff --git a/models/TaskComponent.py b/models/TaskComponent.py
index db84efb..161cfcc 100644
--- a/models/TaskComponent.py
+++ b/models/TaskComponent.py
@@ -19,6 +19,7 @@ class TaskComponent(db.Model):
                 'type' : self.type,
                 'label' : self.label,
                 'isMandatory' : self.isMandatory,
-                'order' : self.order
+                'order' : self.order,
+                'id' : self.key().id()
                 }
         return json.dumps(data)