title: Custom form processing
body: <p>I have some custom form (user reputation) that doesn't link with any model directly. 
  I have several reputation criteria which affects final returation value
  Here is code of the form</p>
  
  <pre><code>&lt;%= form_tag("/add_reputing",:method =&gt; "POST") do%&gt;
  &lt;div class="reputing_column"&gt;
      &lt;p&gt;
          &lt;b&gt;Your feedback:&lt;/b&gt;
      &lt;/p&gt;
      &lt;p&gt;
          &lt;%= text_area_tag :comment,"",{:class=&gt;"or-form-textarea"} %&gt;
      &lt;/p&gt;
      &lt;%= submit_tag("Submit",:class=&gt;"or-button")%&gt;
  &lt;/div&gt;
  &lt;div class="reputing_column"&gt;
      &lt;p&gt;
          &lt;b&gt;Recomendation:&lt;/b&gt;
      &lt;/p&gt;
      &lt;% @criterias.each do |c| %&gt;
      &lt;div class="reputing_row"&gt;
          &lt;label&gt;&lt;%= c.name%&gt;:&lt;/label&gt;
          &lt;div&gt;
              &lt;% (c.rating_from .. c.rating_to).each do |i| %&gt;
              &lt;%= radio_button_tag "reputing_#{c.id}", i%&gt;&lt;%= (i&lt;1)? i : "+#{i}"%&gt;
              &lt;% end %&gt;
          &lt;/div&gt;
      &lt;/div&gt;
      &lt;% end %&gt;
  &lt;/div&gt;
  &lt;% end %&gt;
  </code></pre>
  
  <p>In controller I need to summirize a values of <code>"reputing_#{c.id}"</code> fields. And then add a record to user reputation table.</p>
  
  <p>How it will be better and properly to process data from this form in controller? I tried to google that problem, but found nothing.</p>