title: ActiveRecord - working within one connection
body: <p>For example, suppose there is the code in Rails 3.2.3</p>
  
  <pre><code>def test_action
    a = User.find_by_id(params[:user_id])
    # some calculations.....
    b = Reporst.find_by_name(params[:report_name])
    # some calculations.....
    c = Places.find_by_name(params[:place_name])
  end
  </code></pre>
  
  <p>This code does 3 requests to database and opens 3 different connections. Most likely it's going to be a quite long action. </p>
  
  <p>Is there any way to open only one connection and do 3 requests within it? Or I want to control which connection to use by myself.</p>