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POHow to properly start a session using cookies, store it and access it in a Sinatra app using Rack sessions
 

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  1. POHow to properly start a session using cookies, store it and access it in a Sinatra app using Rack sessions
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    <p>I have a Sinatra app running on Heroku. I've had a really tough time properly setting up the cookies for my users. I've been looking at examples and documentation for a couple days now and just can't seem to crack the problem. I would like to have my users login with a email and password. If the login is successful, I want to create a cookie which expires after some set amount of time. I want the user to remain logged in if they close and re-open their browser or if I push new code to Heroku. I think that is just normal use of cookies, so if someone can help me get it going, I'd be very grateful.</p> <p>Here is how I <em>think</em> I'm supposed to setup the post '/login' route.</p> <pre><code>post '/login/?' do #do_login is a helper method which checks if the user's credentials are correct if do_login use Rack::Session::Cookie, :key =&gt; 'rack.session', :domain =&gt; 'www.Feistie.com', :path =&gt; '/', :expire_after =&gt; 2592000, :secret =&gt; 'a_30_character_key', :user_id =&gt; params[:user_id] end end </code></pre> <p>Even if that is correct, I don't really understand it. What is the :key? I'm assuming :domain should just be set to my website as I did. What about :path? Why is :path set to '/'? Is there a place I actually set the secret key for my Rack app? I'm not totally clear on how cookie security works. I'm also not sure if I can add :user_id to the hash the way I did.</p> <p>Then next part is setting up a helper "logged_in?" to see if someone is logged in?</p> <pre><code>def logged_in? !session.nil? end </code></pre> <p>That is probably wrong, but I figured I'd try. </p> <p>I also need to be able to check who the current user actually is. I used to do this by <code>session[:user_id] == @user.id</code> or something similar. The main question I have is how do I access the :user_id value in the cookie?</p> <p>Finally the logout.</p> <pre><code>post '/logout/?' do session.clear end </code></pre> <p>If you guys could get me on track with all this, it would be amazing! Thanks in advance and if you need more info, I will be glad to provide.</p>
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