title: How to make the f.select rails selected
body: <p>My code:</p>
  <pre><code>&lt;%= f.select :area, options_for_select([['a','a'],['b','b'],['c','c']]), {}, {:class =&gt; 'span3 controls controls-row'}, :selected =&gt; params[:area] %&gt;
  </code></pre>
  <p>The result is:</p>
  <pre><code>ArgumentError in Users#edit
  Showing /home/airson/rails_projects/friends_of_local/app/views/users/edit.html.erb where line #17 raised:
  wrong number of arguments (5 for 4)
  </code></pre>
  <p>Why am I getting this error?</p>