Expose Label id to API

[e44da1c] Add Label API expected keys to tests

[ac929c8] Update Label API documentation

changelogs/unreleased/add-api-label-id.yml

+---
+title: Expose label IDs in API
+merge_request: 7275
+author: Rares Sfirlogea

doc/api/labels.md

@@ -21,6 +21,7 @@ Example response:
 ```json
 [
   {
+    "id" : 1,
     "name" : "bug",
     "color" : "#d9534f",
     "description": "Bug reported by user",
@@ -31,6 +32,7 @@ Example response:
     "priority": 10
   },
   {
+    "id" : 4,
     "color" : "#d9534f",
     "name" : "confirmed",
     "description": "Confirmed issue",
@@ -41,6 +43,7 @@ Example response:
     "priority": null
   },
   {
+    "id" : 7,
     "name" : "critical",
     "color" : "#d9534f",
     "description": "Critical issue. Need fix ASAP",
@@ -51,6 +54,7 @@ Example response:
     "priority": null
   },
   {
+    "id" : 8,
     "name" : "documentation",
     "color" : "#f0ad4e",
     "description": "Issue about documentation",
@@ -61,13 +65,14 @@ Example response:
     "priority": null
   },
   {
+    "id" : 9,
     "color" : "#5cb85c",
     "name" : "enhancement",
     "description": "Enhancement proposal",
     "open_issues_count": 1,
     "closed_issues_count": 0,
     "open_merge_requests_count": 1,
-      "subscribed": false,
+    "subscribed": true,
     "priority": null
   }
 ]
@@ -100,12 +105,14 @@ Example response:
 
 ```json
 {
+  "id" : 10,
   "name" : "feature",
   "color" : "#5843AD",
-   "open_issues_count": 1,
+  "description":null,
+  "open_issues_count": 0,
   "closed_issues_count": 0,
-   "open_merge_requests_count": 1,
-   "description": null,
+  "open_merge_requests_count": 0,
+  "subscribed": false,
   "priority": null
 }
 ```
@@ -135,14 +142,14 @@ Example response:
 
 ```json
 {
-   "title" : "feature",
-   "color" : "#5843AD",
-   "description": "New feature proposal",
-   "updated_at" : "2015-11-03T21:22:30.737Z",
-   "template" : false,
-   "project_id" : 1,
-   "created_at" : "2015-11-03T21:22:30.737Z",
-   "id" : 9,
+  "id" : 1,
+  "name" : "bug",
+  "color" : "#d9534f",
+  "description": "Bug reported by user",
+  "open_issues_count": 1,
+  "closed_issues_count": 0,
+  "open_merge_requests_count": 1,
+  "subscribed": false,
   "priority": null
 }
 ```
@@ -178,12 +185,14 @@ Example response:
 
 ```json
 {
-   "color" : "#8E44AD",
+  "id" : 8,
   "name" : "docs",
+  "color" : "#8E44AD",
   "description": "Documentation",
   "open_issues_count": 1,
   "closed_issues_count": 0,
-   "open_merge_requests_count": 1,
+  "open_merge_requests_count": 2,
+  "subscribed": false,
   "priority": null
 }
 ```
@@ -213,12 +222,13 @@ Example response:
 
 ```json
 {
-    "name": "Docs",
-    "color": "#cc0033",
-    "description": "",
-    "open_issues_count": 0,
+  "id" : 1,
+  "name" : "bug",
+  "color" : "#d9534f",
+  "description": "Bug reported by user",
+  "open_issues_count": 1,
   "closed_issues_count": 0,
-    "open_merge_requests_count": 0,
+  "open_merge_requests_count": 1,
   "subscribed": true,
   "priority": null
 }
@@ -249,12 +259,13 @@ Example response:
 
 ```json
 {
-    "name": "Docs",
-    "color": "#cc0033",
-    "description": "",
-    "open_issues_count": 0,
+  "id" : 1,
+  "name" : "bug",
+  "color" : "#d9534f",
+  "description": "Bug reported by user",
+  "open_issues_count": 1,
   "closed_issues_count": 0,
-    "open_merge_requests_count": 0,
+  "open_merge_requests_count": 1,
   "subscribed": false,
   "priority": null
 }

lib/api/entities.rb

@@ -433,7 +433,7 @@ module API
     end
 
     class LabelBasic < Grape::Entity
-      expose :name, :color, :description
+      expose :id, :name, :color, :description
     end
 
     class Label < LabelBasic

spec/requests/api/labels_spec.rb

@@ -17,12 +17,18 @@ describe API::API, api: true  do
       group = create(:group)
       group_label = create(:group_label, group: group)
       project.update(group: group)
+      expected_keys = [
+        'id', 'name', 'color', 'description',
+        'open_issues_count', 'closed_issues_count', 'open_merge_requests_count',
+        'subscribed', 'priority'
+      ]
 
       get api("/projects/#{project.id}/labels", user)
 
       expect(response).to have_http_status(200)
       expect(json_response).to be_an Array
       expect(json_response.size).to eq(3)
+      expect(json_response.first.keys).to match_array expected_keys
       expect(json_response.map { |l| l['name'] }).to match_array([group_label.name, priority_label.name, label1.name])
       expect(json_response.last['name']).to eq(label1.name)
       expect(json_response.last['color']).to be_present