15 Mar 2018 | | rails


Rails-ujs was formerly JQuery-ujs but the JQuery dependency was removed hence the name change.


Rails 5.1 added form_with form helper method that provides capabilities of form_for and form_tag. Rails unified form_for and form_tag that provide similar interfaces to generate forms with form_with helper.

Now we can use form_with for both model and non-model based forms.

If your application uses rails-ujs, the form will be submitted via ajax, and it listens on following events.

Event can be binded on form as given below.

$(document).on('ajax:success', '#new_user', function(e) {
  console.log('form_with: successfully submitted form via ajax');
$(document).on('ajax:error', '#new_user', function(e) {
  console.log('form_with: error submitting form via ajax');
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