Add updated_at to todos API

changelogs/unreleased/214283-add-updated-at-to-todos-api.yml

+---
+title: Expose the updated_at attribute in the todos API
+merge_request: 30035
+author:
+type: changed

doc/api/todos.md

@@ -101,7 +101,8 @@ Example Response:
     "target_url": "https://gitlab.example.com/gitlab-org/gitlab-foss/-/merge_requests/7",
     "body": "Dolores in voluptatem tenetur praesentium omnis repellendus voluptatem quaerat.",
     "state": "pending",
-    "created_at": "2016-06-17T07:52:35.225Z"
+    "created_at": "2016-06-17T07:52:35.225Z",
+    "updated_at": "2016-06-17T07:52:35.225Z"
   },
   {
     "id": 98,
@@ -174,7 +175,8 @@ Example Response:
     "target_url": "https://gitlab.example.com/gitlab-org/gitlab-foss/-/merge_requests/7",
     "body": "Dolores in voluptatem tenetur praesentium omnis repellendus voluptatem quaerat.",
     "state": "pending",
-    "created_at": "2016-06-17T07:49:24.624Z"
+    "created_at": "2016-06-17T07:49:24.624Z",
+    "updated_at": "2016-06-17T07:49:24.624Z"
   }
 ]
 ```
@@ -272,7 +274,8 @@ Example Response:
     "target_url": "https://gitlab.example.com/gitlab-org/gitlab-foss/-/merge_requests/7",
     "body": "Dolores in voluptatem tenetur praesentium omnis repellendus voluptatem quaerat.",
     "state": "done",
-    "created_at": "2016-06-17T07:52:35.225Z"
+    "created_at": "2016-06-17T07:52:35.225Z",
+    "updated_at": "2016-06-17T07:52:35.225Z"
 }
 ```
 

lib/api/entities/todo.rb

@@ -22,6 +22,7 @@ module API
       expose :body
       expose :state
       expose :created_at
+      expose :updated_at
 
       def todo_target_class(target_type)
         # false as second argument prevents looking up in module hierarchy

spec/requests/api/todos_spec.rb

@@ -235,6 +235,7 @@ describe API::Todos do
       expect(json_response['state']).to eq('pending')
       expect(json_response['action_name']).to eq('marked')
       expect(json_response['created_at']).to be_present
+      expect(json_response['updated_at']).to be_present
     end
 
     it 'returns 304 there already exist a todo on that issuable' do