Make DuplicateArticleDeleter class delete all articles with duplicate…

… title and namespace except for the most recently created. This fixes a previous bug whereby the newest article was deleted, and the one kept was the oldest, due to the default order for ActiveRecord.
WikiEducationFoundation · Feb 3, 2025 · da385ac · da385ac
1 parent bb7b4ad
commit da385ac
Show file tree

Hide file tree

Showing 2 changed files with 18 additions and 17 deletions.
diff --git a/lib/duplicate_article_deleter.rb b/lib/duplicate_article_deleter.rb
@@ -49,7 +49,8 @@ def delete_duplicates_in(article_group)
   def delete_duplicates(title, ns)
     articles = Article.where(title:, namespace: ns, wiki_id: @wiki.id, deleted: false)
                       .order(:created_at)
-    keeper = articles.first
+    # Default order is ascendent, so we want to keep the last article
+    keeper = articles.last
     return [] if keeper.nil?
 
     # Here we must verify that the titles match, since searching by title is case-insensitive.

diff --git a/spec/lib/duplicate_article_deleter_spec.rb b/spec/lib/duplicate_article_deleter_spec.rb
@@ -31,26 +31,26 @@
                        deleted: true)
     end
 
-    it 'marks one deleted when there are two ids for one page' do
-      first = create(:article,
-                     id: 2262715,
-                     title: 'Kostanay',
-                     namespace: 0,
-                     created_at: 1.day.from_now)
-      second = create(:article,
-                      id: 46349871,
-                      title: 'Kostanay',
-                      namespace: 0,
-                      created_at: 1.day.ago)
-      described_class.new.resolve_duplicates([first])
-      undeleted = Article.where(
+    it 'marks oldest one deleted when there are two ids for one page' do
+      new_article = create(:article,
+                           id: 2262715,
+                           title: 'Kostanay',
+                           namespace: 0,
+                           created_at: 1.day.from_now)
+      duplicate_article = create(:article,
+                                 id: 46349871,
+                                 title: 'Kostanay',
+                                 namespace: 0,
+                                 created_at: 1.day.ago)
+      described_class.new.resolve_duplicates([new_article])
+      deleted = Article.where(
         title: 'Kostanay',
         namespace: 0,
-        deleted: false
+        deleted: true
       )
 
-      expect(undeleted.count).to eq(1)
-      expect(undeleted.first.id).to eq(second.id)
+      expect(deleted.count).to eq(1)
+      expect(deleted.first.id).to eq(duplicate_article.id)
     end
 
     it 'does not mark any deleted when articles different in title case' do