Rails file upload with ajax -

i have been uploading file rails rest-client, when change ajax,
gives server error.

form code

<%= form_tag({:controller => 'person',:action => 'create'},:multipart => true) %>   <%= file_field_tag 'upload', :class => 'upload_name' %> <%= submit_tag "upload",  :class => "photo_up btn btn-success" %>    <%end%>  

ajax code

$(function(){ $(".photo_up").click(function(){  var filename = $(".upload_name").val();   $.ajax({          url: '/create', //your server side script          data: { upload: filename}, //our data          type: 'post',          success: function (response) {                                  }       }); return false; }); }); 

controller code

file_param = params[:upload] puts "name os #{file_param}" show_url = "............." resource = restclient::resource.new show_url, :user => "admin",:password => "admin" response = resource.post  :file => file_param, :multipart => true 

here when run code, got serve error restclient::internalservererror (500 internal server error):, , know server shows null pointer, in controller gives error in line response = resource.post :file => file_param, :multipart => true. run when in normal form without ajax.

unfortunately there no easy , universal way send multipart forms via ajax

look jquery ajaxform plugin. makes thing easy.

http://malsup.com/jquery/form/