cookies in rails

Rails Cookies Mangles the Hash Interface
cookies api
Session and cookie in rails


cookies 不是單純的 hash 而已, 簡單看這個例子就可以明白
<br />def index<br /> cookies[:key] = "val"<br /> puts cookies[:key]<br /> redirect_to :second_index<br />end<br /><br />def second_index<br /> cookies[:key] = "newval"<br /> puts cookies[:key]<br />end<br /><br />## Output :<br />## Open index page for the first time<br /># nil<br /># val<br /><br />## Open index page the second time<br /># newval<br /># val<br />
So,
cookies[] gives you value from the incoming cookie.
cookies[]= sets value in the outgoing cookie.

The server needs to send the cookie to the browser and the browser has to return the cookie. Then you can read the value.

cookies[:its] = "1999"

*server response
*browser request

p cookies[:its]
#=> "1999"