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Getting a remote form to submit within a partial collection when any select changes in Ruby on Rails

This one is harder than it seems. But, I figured out a way. The trick and breakthrough came from Teflon Ted.

With a regular form, you could do this in your select statement:


This won’t work with a remote form, because the submission is not handled with the submit method but rather within the JavaScript callback in onsubmit. So, with a remote form, you have to change it to this:


So, here is my code.

<%- remote_form_for
  :url=>{:action=>'update_remote', :id=>user.id},
  :loading=>"Element.show('spinner_"+user.id.to_s+"'); Form.disable('form_"+user.id.to_s+"')"
  do |f|

<%= f.select
  Project.find(:all).collect{|p| [p.name,p.id]},
  {:include_blank=>false, :selected=>user.project_id},
  {:onChange=>"this.form.onsubmit();", :id=>'user_project_id_'+user.id.to_s}

<%- end -%>

Note that this is in a partial that gets iterated over a collection. So, I have to give everything a unique id in the HTML. Also, note that this includes the user of a spinner to show activity is taking place. I also like to disable the form temporarily to make sure nothing else gets selected. I don’t have to hide the spinner or reactivate the form because when the table row gets regenerated via RJS, it goes back to the default condition.

4 responses to “Getting a remote form to submit within a partial collection when any select changes in Ruby on Rails”

  1. Excellent, and thanks for the cred 🙂

  2. Thanks. I had been searching why this didn’t work with the onchange event.

  3. Nice call. thanks for teh code snippet, too

  4. Can I have same problem solved using PHP??

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About Me

Digital transformation, including agile and devops, across many industries, most recently in higher education. Designed and built the Emory faculty information system. Working in continuing education to improve and expand career-focused learning, esp. in workforce development. Expanding the role of innovation and entrepreneurship. Designed, built, and launched the Emory Center for Innovation.

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