title: Adding translations in the String in Rails
body: <p>I am new to rails.. I am having a line in the mailing queue.rb file as</p>
  
  <p>subject ="Mail : Welcome to app"</p>
  
  <p>I have added translation for Welcome to app as </p>
  
  <pre><code>        str_welcome: "Welcome to app"
  </code></pre>
  
  <p>Now i am trying to replace Welcome to app in the file with the str_welcome </p>
  
  <p>how to do that as i have another prefix ("Mail") also .. </p>