Reading top level domain cookie from subdomain, how to?

Question

My vbulletin forum sets up some cookies on top level domain domain-name.com I have rails app on beta.domain-name.com . Is it possible to read these top level cookies within my app? How can I do this?

Answer 1

Yes , It is possible.

You need to specify domain attribute as :domain => .domain-name.com

For example:

cookies[:your_cookie] = {:value => 'something', :domain => '.domain-name.com'}

Now, cookies can be accessed in *.domain-name.com and domain-name.com .