Merge pull request #33488 from znz/avoid-to-post-twice

Throw if ujs loaded twice
rails · Jul 31, 2018 · 1c811cd · 1c811cd
2 parents e2aaf5c + 9df747c
commit 1c811cd
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/actionview/app/assets/javascripts/rails-ujs/start.coffee b/actionview/app/assets/javascripts/rails-ujs/start.coffee
@@ -9,7 +9,8 @@
 } = Rails
 
 # For backward compatibility
-if jQuery? and jQuery.ajax? and not jQuery.rails
+if jQuery? and jQuery.ajax?
+  throw new Error('If you load both jquery_ujs and rails-ujs, use rails-ujs only.') if jQuery.rails
   jQuery.rails = Rails
   jQuery.ajaxPrefilter (options, originalOptions, xhr) ->
     CSRFProtection(xhr) unless options.crossDomain