转自：https://github.com/markcatley/responds_to_parent

说明：rails中模拟ajax方式上传文件

插件下载地址：ruby script/plugin install http://responds-to-parent.googlecode.com/svn/trunk/

Adds responds_to_parent to your controller to respond to the parentdocument of your page. Make Ajaxy file uploads by posting the form to ahidden iframe, and respond with RJS to the parent window.

Example

Controller:

class Test < ActionController::Basedef mainenddef form_action# Do stuff with params[:uploaded_file]responds_to_parent dorender :update do |page|page << "alert($('stuff').innerHTML)"endendend
end

main.rhtml:

<html><body><div id="stuff">Here is some stuff</div><form target="frame" action="form_action"><input type="file" name="uploaded_file"/><input type="submit"/></form><iframe id='frame' name="frame"></iframe></body>
</html>

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AJAX file uploads in Rails using attachment_fu and responds_to_parent 1

Example

Controller:

main.rhtml:

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