ruby - Are there any basic examples of Rack::Session::Cookie usage? -

i can't find simple examples using rack::session::cookie , able store information in cookie, , access on later requests , have expire.

these examples i've been able find:

• how set/get session vars in rack app?
• http://rack.rubyforge.org/doc/classes/rack/session/cookie.html

here's i'm getting:

 use rack::session::cookie, :key => 'rack.session',                                :domain => 'foo.com',                                :path => '/',                                :expire_after => 2592000,                                :secret => 'change_me' 

and setting/retrieving:

env['rack.session'][:msg]="hello rack" 

i can't find other guides or examples setup of this. can help?

you have setup cookie in question. not sure if means else "setup".

instead of env['rack.session'] can use session[key] simplification.

session[:key] = "vaue" # set value session[:key] # return value 

simple sinatra example

require 'sinatra' set :sessions, true '/'     session[:key_set] = "set"     "hello" end "/sess"     session[:key_set] end 

update

i believe wasn't working because had set invalid domain. had strip off :domain => 'foo.com',. btw sinatra wraps rack cookie , exposes session helper. above code worked fine me. believe following code should work expected.

require 'sinatra' use rack::session::cookie, :key => 'rack.session',   :expire_after => 2592000,   :secret => 'change_me' '/'   msg = params["msg"] || "not set"   env["rack.session"][:msg] = msg   "hello" end "/sess"   request.session["msg"] end 

• set session value msg access root or / defaults 'not set' if pass ?msg=somestring should set msg new value.
• access /sess check whats in session.

you can take cues how set/get session vars in rack app?