Can I POST an image to my rails app from another domain using jQuery AJAX?

How do I write my create action in a controller to accept data from another server?

Is this possible with JSONP? What about same origin policy?

I only need to worry about HTML5 compliant browsers. Thanks!

    $.ajax({
            type: 'POST',
            url: 'http://pinky.local:3000/items',
            dataType: 'jsonp',
            success: function(data) {
                 console.log(data)
                    },
            processData: false,
            data: "{\"item\":{\"name\":\"foobar\"}开发者_如何转开发}"
        })

Controller

def create
  @item = Item.new(params[:item])
end

ERROR: XMLHttpRequest cannot load http://pinky.local:3000/items. Origin http://foo.local is not allowed by Access-Control-Allow-Origin.

---

 $(function() {
         $('a').click(function(e){
           $.ajax({
             data: "{\"item\":{\"name\":\"foobar\"}}",
             type:'POST',
             url:'http://localhost:3000/items/upload',
             success: function(response) {
               alert('Successfully sent data!'); 
             },
             error: function(event, jqXHR, ajaxSettings, thrownError) {
             }
           });
          });
        });
    </script>

match '/items/upload' => "items#upload", :conditions => { :method => :options }

  def upload
        #Needs these headers for the cross-domain ajax
        headers['Access-Control-Allow-Methods'] = 'POST, GET, OPTIONS'
        headers['Access-Control-Allow-Headers'] = 'x-requested-with'
        if request.post?
          @item = Item.new(params[:item])
          @item.pic = data
          @item.save!
        end
        render :text => 'success'
      end