Normalize login

app/models/editor.rb

@@ -15,8 +15,8 @@ class Editor < ApplicationRecord
   has_many :track_aeics, dependent: :destroy
   has_many :managed_tracks, through: :track_aeics, source: :track
 
+  normalizes :login, with: -> login { login.gsub(/^@/, "") }
   before_save :clear_title, if: :board_removed?
-  before_save :format_login, if: :login_changed?
   before_save :add_default_avatar_url
 
   ACTIVE_EDITOR_STATES = [
@@ -95,10 +95,6 @@ def board_removed?
     kind_changed? && kind_was == "board"
   end
 
-  def format_login
-    login.gsub!(/^@/, "")
-  end
-
   def add_default_avatar_url
     if avatar_url.blank? && login.present?
       self.avatar_url = "https://github.com/#{login}.png"

spec/models/editor_spec.rb

@@ -71,11 +71,10 @@
     end
   end
 
-  describe "#format_login" do
-    let(:editor) { build(:editor, login: "@somebody") }
-
-    it "removes @'s" do
-      expect { editor.save }.to change { editor.login }.to "somebody"
+  describe "normalize login" do
+    it "removes initial @'s" do
+      editor = create(:editor, login: "@somebody")
+      expect(editor.login).to eq("somebody")
     end
   end