title: Rails4: Saving and displaying date in user's timezone
body: <p>I am working on a rail4 app. Where I want to store dates in all mysql tables in UTC. However I store user's timezone in a specific table, called <code>users</code>. When user logs in, I get user's timezone form <code>user</code> table and save in session. </p>
  
  <p>I am able to save date in all tables in UTC as default value of <code>config.time_zone</code> is UTC for activerecords and activemodels. But while displaying I want to show dates in user's timezone. As well as, when any user inputs a date/time in any html form, then I want to save it in the equivalent UTC format.</p>
  
  <p>What is the best way to achieve this?</p>