title: (rails) hidden form elements not giving values to controller
body: <p>I have the following form:</p>
  
  <pre><code>&lt;% form_for(:tag, :url =&gt; {:action =&gt; "post_tag", :id =&gt; @photoID}) do |form| %&gt;
    &lt;%= error_messages_for(:tag) %&gt;
    &lt;% if @errors then %&gt;
    &lt;%= @errors[0] %&gt;
    &lt;% end %&gt;
    &lt;p&gt;&lt;%= form.select(:user_id, @userHash) %&gt;&lt;/p&gt;
    &lt;p&gt;&lt;%= form.hidden_field(:xpos) %&gt;&lt;/p&gt;
    &lt;p&gt;&lt;%= form.hidden_field(:ypos) %&gt;&lt;/p&gt;
    &lt;p&gt;&lt;%= form.hidden_field(:width) %&gt;&lt;/p&gt;
    &lt;p&gt;&lt;%= form.hidden_field(:height) %&gt;&lt;/p&gt;
    &lt;%= submit_tag "Submit Tag" %&gt;
  &lt;% end %&gt;
  </code></pre>
  
  <p>But none of the values are filled in the controller. I know the values are all full in the view because I can see they have the correct values in Firebug. In the controller, I am trying to access them like <code>params[:xpos]</code> for the <code>:xpos hidden_field</code>. Is this correct???</p>