title: Map several variables
body: <p>At the time i produce output with this code:</p>
  
  <pre><code>     &lt;h3&gt;
       &lt;% @partner.employees.each do |s| %&gt;
         &lt;%= "#{s.forename} #{s.lastname} " %&gt;
       &lt;% end %&gt;
       &lt;%= " ..." %&gt;&lt;/h3&gt;
  </code></pre>
  
  <p>This for example produces this output:</p>
  
  <pre><code>    Josef Smith Daniel Crak ....
  </code></pre>
  
  <p>My problem is that i try to get this output:</p>
  
  <pre><code>    Josef Smith, Daniel Crak ....
  </code></pre>
  
  <p>I tried something like that:</p>
  
  <pre><code>    @partner.employees.all.map(:forname, :lastname)
  </code></pre>
  
  <p>But this produced this error:</p>
  
  <pre><code>   wrong number of arguments (2 for 0)
  </code></pre>
  
  <p>I hope somebody can help me find a short solution! Thanks</p>