将数据从jquery发送到rails控制器不起作用

I am using a JQuery plugin (Plupload) for multiple file uploads on my site. Once the upload completes, I am redirecting the user to an edit page where they can tag and name the photos they just uploaded. I have access to the number of files uploaded (by calling the length on the array that stored the files) and would like to set an instance variable in my photos controller to that so that I can pull the files that were just uploaded.I am using a JQuery plugin (Plupload) for multi