Why I need add “data: {type: ”script“}” on remote link with rails / ajax

Question

in one project of mine, the code:

  = link_to \"add\", new_me_category_path, class: \"btn btn-success\", remote: true

can load remote form

Answer 1

Behind the scenes, jQuery's ajax method is used: http://api.jquery.com/jquery.ajax/ by uJS https://github.com/rails/jquery-ujs whenever the data-remote="true" attribute of the link is set, which is done by remote: true.

As stated in the documentation, Ajax determines the HTTP Accepts header sent and interprets the return value based on the dataType and accepts arguments passed to ajax(), which here are taken from the data- attributes of the anchor by uJS.

If no dataType is set through the data-type attribute, jQuery inferences the request and response type "intelligently". This can explain inconsistencies if you do not explicitly specify it.