FEATURE: Add Wiki Editor badge. (#6511)

app/models/badge.rb

@@ -15,6 +15,7 @@ class Badge < ActiveRecord::Base
   GreatPost = 8
   Autobiographer = 9
   Editor = 10
+  WikiEditor = 48
 
   FirstLike = 11
   FirstShare = 12

config/locales/server.en.yml

@@ -3655,6 +3655,11 @@ en:
       description: First post edit
       long_description: |
         This badge is granted the first time you edit one of your posts. While you won’t be able to edit your posts forever, editing is encouraged — you can improve the formatting, fix small mistakes, or add anything you missed when you originally posted. Edit to make your posts even better!
+    wiki_editor:
+      name: Wiki Editor
+      description: First wiki edit
+      long_description: |
+        This badge is granted the first time you edit one wiki post.
     basic_user:
       name: Basic
       description: <a href="https://blog.discourse.org/2018/06/understanding-discourse-trust-levels/">Granted</a> all essential community functions

db/fixtures/006_badges.rb

@@ -233,6 +233,19 @@ Badge.seed do |b|
   b.system = true
 end
 
+Badge.seed do |b|
+  b.id = Badge::WikiEditor
+  b.name = "Wiki Editor"
+  b.badge_type_id = BadgeType::Bronze
+  b.multiple_grant = false
+  b.target_posts = true
+  b.query = BadgeQueries::WikiEditor
+  b.badge_grouping_id = BadgeGrouping::GettingStarted
+  b.default_badge_grouping_id = BadgeGrouping::GettingStarted
+  b.trigger = Badge::Trigger::PostRevision
+  b.system = true
+end
+
 [
   [Badge::NicePost,   "Nice Post",   BadgeType::Bronze, false],
   [Badge::GoodPost,   "Good Post",   BadgeType::Silver, false],

lib/badge_queries.rb

@@ -99,6 +99,15 @@ SQL
   GROUP BY p.user_id
 SQL
 
+  WikiEditor = <<~SQL
+  SELECT DISTINCT ON (pr.user_id) pr.user_id, pr.post_id, pr.created_at granted_at
+  FROM post_revisions pr
+  JOIN badge_posts p on p.id = pr.post_id
+  WHERE p.wiki
+      AND NOT pr.hidden
+      AND (:backfill OR p.id IN (:post_ids))
+SQL
+
   Welcome = <<SQL
   SELECT p.user_id, min(post_id) post_id, min(pa.created_at) granted_at
   FROM post_actions pa