Gab Social. All are welcome.

app/models/concerns/domain_normalizable.rb

@@ -0,0 +1,15 @@
+# frozen_string_literal: true
+
+module DomainNormalizable
+  extend ActiveSupport::Concern
+
+  included do
+    before_validation :normalize_domain
+  end
+
+  private
+
+  def normalize_domain
+    self.domain = TagManager.instance.normalize_domain(domain&.strip)
+  end
+end