Merge branch 'approval-required-todo' into 'master'

Add approval required todos

Ports the 'approval required' todo type from EE - https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/547

See merge request !5217

app/finders/todos_finder.rb

@@ -37,7 +37,7 @@ class TodosFinder
   private
 
   def action_id?
-    action_id.present? && [Todo::ASSIGNED, Todo::MENTIONED, Todo::BUILD_FAILED, Todo::MARKED].include?(action_id.to_i)
+    action_id.present? && Todo::ACTION_NAMES.has_key?(action_id.to_i)
   end
 
   def action_id

app/helpers/todos_helper.rb

@@ -13,6 +13,7 @@ module TodosHelper
     when Todo::MENTIONED then 'mentioned you on'
     when Todo::BUILD_FAILED then 'The build failed for your'
     when Todo::MARKED then 'added a todo for'
+    when Todo::APPROVAL_REQUIRED then 'set you as an approver for'
     end
   end
 

app/models/todo.rb

@@ -1,14 +1,16 @@
 class Todo < ActiveRecord::Base
-  ASSIGNED     = 1
-  MENTIONED    = 2
-  BUILD_FAILED = 3
-  MARKED       = 4
+  ASSIGNED          = 1
+  MENTIONED         = 2
+  BUILD_FAILED      = 3
+  MARKED            = 4
+  APPROVAL_REQUIRED = 5 # This is an EE-only feature
 
   ACTION_NAMES = {
     ASSIGNED => :assigned,
     MENTIONED => :mentioned,
     BUILD_FAILED => :build_failed,
-    MARKED => :marked
+    MARKED => :marked,
+    APPROVAL_REQUIRED => :approval_required
   }
 
   belongs_to :author, class_name: "User"

doc/api/todos.md

@@ -15,7 +15,7 @@ Parameters:
 
 | Attribute | Type | Required | Description |
 | --------- | ---- | -------- | ----------- |
-| `action` | string | no | The action to be filtered. Can be `assigned`, `mentioned`, `build_failed`, or `marked`. |
+| `action` | string | no | The action to be filtered. Can be `assigned`, `mentioned`, `build_failed`, `marked`, or `approval_required`. |
 | `author_id` | integer | no | The ID of an author |
 | `project_id` | integer | no | The ID of a project |
 | `state` | string | no | The state of the todo. Can be either `pending` or `done` |

spec/factories/todos.rb

@@ -23,6 +23,10 @@ FactoryGirl.define do
       action { Todo::BUILD_FAILED }
     end
 
+    trait :approval_required do
+      action { Todo::APPROVAL_REQUIRED }
+    end
+
     trait :done do
       state :done
     end