Tidy up session_token

app/controllers/concerns/authentication.rb

@@ -100,4 +100,8 @@ module Authentication
       Current.session.destroy
       cookies.delete(:session_token)
     end
+
+    def session_token
+      cookies[:session_token]
+    end
 end

app/controllers/sessions/magic_links_controller.rb

@@ -46,7 +46,7 @@ class Sessions::MagicLinksController < ApplicationController
 
       respond_to do |format|
         format.html { redirect_to after_sign_in_url(magic_link) }
-        format.json { render json: { session_token: cookies[:session_token] } }
+        format.json { render json: { session_token: session_token } }
       end
     end