title: Ruby on Rails: where is init.rb file?
body: <p>I am new to rails.I am building my first application. I have to put the following lines in init.rb file:</p>
  
  <pre><code>#in init.rb
  require ‘active_record’
  require ‘simple_search’
  ActiveRecord::Base.send(:extend, SimpleSearch::ClassMethods)
  </code></pre>
  
  <p>could you tell me what is the location of init.rb file.</p>