TagName サニタイズ（#281） (#289)

#281

#281

Merge remote-tracking branch 'origin/main' into feature/281

#281

#281 テストまだ通ってないので要確認

Co-authored-by: miteruzo <miteruzo@naver.com>
Reviewed-on: #289

backend/app/models/my_discard.rb

@@ -0,0 +1,20 @@
+module MyDiscard
+  extend ActiveSupport::Concern
+
+  included { include Discard::Model }
+
+  class_methods do
+    def find_undiscard_or_create_by! attrs, &block
+      record = with_discarded.find_by(attrs)
+
+      if record&.discarded?
+        record.undiscard!
+        record.update_columns(created_at: record.reload.updated_at)
+      end
+
+      record or create!(attrs, &block)
+    rescue ActiveRecord::RecordNotUnique
+      retry
+    end
+  end
+end