Merge branch 'patch/wiki_page_events' into 'master'

Enable Wiki Page events from Webhook admin UI in a Project

* Added UI to enable page wiki events
* Documentation for this event in Webhooks page

Fixes #17506

--- 

![new_webhook_UI](/uploads/63ef24b4ccef13ac7a5fda83e9ce64ad/new_webhook_UI.png)

See merge request !4135

CHANGELOG

 Please view this file on the master branch, on stable branches it's out of date.
 
 v 8.9.0 (unreleased)
+  - Allow enabling wiki page events from Webhook management UI
   - Allow forking projects with restricted visibility level
   - Improve note validation to prevent errors when creating invalid note via API
   - Redesign navigation for project pages

app/controllers/projects/hooks_controller.rb

@@ -63,7 +63,8 @@ class Projects::HooksController < Projects::ApplicationController
       :push_events,
       :tag_push_events,
       :token,
-      :url
+      :url,
+      :wiki_page_events
     )
   end
 end

app/views/projects/hooks/_project_hook.html.haml

@@ -3,7 +3,7 @@
     .col-md-8.col-lg-7
       %strong.light-header= hook.url
       %div
-        - %w(push_events tag_push_events issues_events note_events merge_requests_events build_events).each do |trigger|
+        - %w(push_events tag_push_events issues_events note_events merge_requests_events build_events wiki_page_events).each do |trigger|
           - if hook.send(trigger)
             %span.label.label-gray.deploy-project-label= trigger.titleize
     .col-md-4.col-lg-5.text-right-lg.prepend-top-5

app/views/projects/hooks/index.html.haml

@@ -64,6 +64,13 @@
               Build events
             %p.light
               This url will be triggered when the build status changes
+        %div
+          = f.check_box :wiki_page_events, class: 'pull-left'
+          .prepend-left-20
+            = f.label :wiki_page_events, class: 'label-light append-bottom-0' do
+              Wiki Page events
+            %p.light
+              This url will be triggered when a wiki page is created/updated
       .form-group
         = f.label :enable_ssl_verification, "SSL verification", class: "label-light"
         %div

doc/web_hooks/web_hooks.md

@@ -695,6 +695,60 @@ X-Gitlab-Event: Merge Request Hook
 }
 ```
 
+## Wiki Page events
+
+Triggered when a wiki page is created or edited.
+
+**Request Header**:
+
+```
+X-Gitlab-Event: Wiki Page Hook
+```
+
+**Request Body**:
+
+```json
+{
+  "object_kind": "wiki_page",
+  "user": {
+    "name": "Administrator",
+    "username": "root",
+    "avatar_url": "http://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=80\u0026d=identicon"
+  },
+  "project": {
+    "name": "awesome-project",
+    "description": "This is awesome",
+    "web_url": "http://example.com/root/awesome-project",
+    "avatar_url": null,
+    "git_ssh_url": "git@example.com:root/test-project.git",
+    "git_http_url": "http://example.com/root/awesome-project.git",
+    "namespace": "root",
+    "visibility_level": 0,
+    "path_with_namespace": "root/awesome-project",
+    "default_branch": "master",
+    "homepage": "http://example.com/root/awesome-project",
+    "url": "git@example.com:root/awesome-project.git",
+    "ssh_url": "git@example.com:root/awesome-project.git",
+    "http_url": "http://example.com/root/awesome-project.git"
+  },
+  "object_attributes": {
+    "title": "Awesome",
+    "content": "awesome content goes here",
+    "format": "markdown",
+    "message": "adding an awesome page to the wiki",
+    "slug": "awesome",
+    "url": "http://example.com/root/awesome-project/wikis/awesome",
+    "action": "create"
+  },
+  "repository": {
+    "name": "awesome-project",
+    "url": "git@example.com:root/awesome-project.git",
+    "description": "test",
+    "homepage": "http://example.com/root/awesome-project"
+  }
+}
+```
+
 #### Example webhook receiver
 
 If you want to see GitLab's webhooks in action for testing purposes you can use