204 response from server should not add .editable-unsaved css class to <a>

[KeithP]

On update the Rails controller correctly responds with 204 No Content, but the "editable-unsaved" css class is added to the anchor tag.

Using Rails 4.1, ruby 1.9.1, jquery-rails-3.1.0, bootstrap 3

[tkawa]

Thank you for reporting 😄
It seems an X-editable's bug.

It will work by this fix:

https://github.com/bootstrap-ruby/bootstrap-editable-rails/blob/master/vendor/assets/javascripts/bootstrap-editable.js#L1845

-                sent = sent || (this.options.savenochange && this.input.value2str(this.value) !== this.input.value2str(params.newValue));
+                sent = sent || (this.input.value2str(this.value) !== this.input.value2str(params.newValue));

It should be fixed on the original source, so I'll send a pull request to X-editable.
Meanwhile, please try this fix.