title: Undefined method `between' for Fixnum
body: <p>I have a URL:</p>
  
  <pre><code>xxxx/xxx?status=2
  </code></pre>
  
  <p>I got the value of the <code>:status</code> parameter from the URL, converted it to integer, and tried to use <code>between</code> method on it:</p>
  
  <pre><code>params[:status].to_i.between.(0, 3)
  </code></pre>
  
  <p>but I get the error as below:</p>
  
  <pre><code>undefined method `between' for 1:Fixnum
  </code></pre>
  
  <p>I checked the class ancestors:</p>
  
  <pre><code>params[:status].to_i.class.ancestors
  # =&gt; [Fixnum, JSON::Ext::Generator::GeneratorMethods::Fixnum, Integer, Numeric, Comparable, Object, ActiveSupport::Dependencies::Loadable, JSON::Ext::Generator::GeneratorMethods::Object, Kernel, BasicObject]
  </code></pre>
  
  <p>I can see <code>Comparable</code>, so I don't get why I couldn't do it.</p>