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Remotipart is a Ruby on Rails gem enabling remote multipart forms (AJAX style file uploads) with jQuery.

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Remotipart is a Ruby on Rails gem enabling remote multipart forms (AJAX style file uploads) with jQuery. This gem augments the native Rails jQuery remote form function enabling asynchronous file uploads with little to no modification to your application.

This fork is to experiment with porting the whole thing to Prototype (+Scriptaculous, should that be needed). No changes have been made yet.



Prerequisite: Make sure you have a supported jquery-ujs (rails.js) version. To be certain, replace public/javascripts/rails.js with this version of rails.js.

  1. Install the Remotipart gem

gem install remotipart

  1. Run the Remotipart generator to add jquery.remotipart.js to public/javascripts/

rails g remotipart

  1. Add the Javascript files for jQuery, the Rails jQuery driver, jQuery Form plugin, and Remotipart to your template, making sure to include jquery.remotipart.js after jQuery and the Rails jQuery driver

<%= javascript_include_tag 'jquery-1.4.4.min', 'rails', 'jquery.form', 'jquery.remotipart' %>


  • For multipart / forms with file inputs, set your form_for to remote as you would for a normal ajax form:

:remote => true

  • When Javascript is enabled in the user's browser, the form, including the file, will be submitted asynchronously to your controller with:

:format == 'js'

  • In the JS response template for your controller action, wrap all of your response code in one remotipart_response block:

<%= remotipart_response do %> All Javascript response code goes here <% end %>

  • The options available to the text_area_tag can be passed to remotipart_response for further control over the response. For instance:

<%= remotipart_response({:escape => false}) do %> All Javascript response code goes here <% end %>

  • UPDATE: As of v0.3.0, anything inside the remotipart_response block will be rendered normally, unless the request actually did come from a remotipart-submitted form. So js.erb responses can be shared between remotipart and non-remotipart forms.

    <%= remotipart_response do %>
      if params[:remotipart_submitted]
        // do one thing
        // do another
    <% end %>
  • If you need to determine if a particular request was made via a remotipart-enabled form…

    • from your Rails controller or view:

      if params[:remotipart_submitted]
    • from your javascript:

      $(form).bind("ajax:success", function(){
        if ( $(this).data('remotipartSubmitted') )



<%= form_for @sample, :html => { :multipart => true }, :remote => true do |f| %>
  <div class="field">
    <%= f.label :file %>
    <%= f.file_field :file %>
  <div class="actions">
    <%= f.submit %>
<% end %>


def create
  respond_to do |format|


<%= remotipart_response do %>
  //Display a Javascript alert
<% end %>

Note on Patches/Pull Requests

  • Fork the project.

  • Make your feature addition or bug fix.

  • Add tests for it. This is important so I don't break it in a future version unintentionally.

  • Commit, do not mess with rakefile, version, or history. (if you want to have your own version, that is fine but bump version in a commit by itself I can ignore when I pull)

  • Send me a pull request. Bonus points for topic branches.


Copyright © 2011 Greg Leppert. See LICENSE for details.

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