How to use a rack middleware in rails application?

[shinn]

Hi all,

I'm currently developing a rails app that required to do cross side scripting with ajax. I've been google around and found this rack middleware that used rack on doing proxy. However I have no idea on how to use it in my app. Please help, I'm using Rails 3.2.3. Thanks!

[James Tucker]

On Apr 18, 2012, at 6:10 AM, shinn wrote:

Hi all,

I'm currently developing a rails app that required to do cross side scripting with ajax. I've been google around and found this rack middleware that used rack on doing proxy. However I have no idea on how to use it in my app. Please help, I'm using Rails 3.2.3. Thanks!

http://guides.rubyonrails.org/rails_on_rack.html

It sounds like you probably want CORS though, not a proxy.

http://blog.davelyon.net/cross-origin-resource-sharing-on-rails

http://www.tsheffler.com/blog/?p=428

http://www.google.com/search?q=CORS+on+rails

[shinn]

Hi, thanks for your reply.

According to this source, CORS will required the targeted domain (http://bar.other in this example) to response with the "Access-Control-Allow-Origin".

This is the reason I'm not using CORS, because the targeted domain is not belong to me, I've no way to add the "Access-Control-Allow-Origin" header on its server. Correct me if I'm wrong.

[James Tucker]

I suggest you proxy only the routes you need.

[shinn]

Yes, that's what I wanted to do with the rack middleware. So how to use it?