title: Does form_tag work with Simple_form?
body: <p>I have a form that is using <code>form_tag</code> and not sure how to use it with the <a href="https://github.com/plataformatec/simple_form">simple_form gem</a>. This is how my form looks:</p>
  
  <pre><code>&lt;%= form_tag create_multiple_prices_path, :method =&gt; :post do %&gt;
  
    &lt;% @prices.each_with_index do |price, index| %&gt;
      &lt;%= fields_for "prices[#{index}]", price do |up| %&gt;
        &lt;%= render "fields", :f =&gt; up %&gt;
      &lt;% end %&gt;
    &lt;% end %&gt;
  
    &lt;%= submit_tag "Done" %&gt;
  &lt;% end %&gt;
  </code></pre>
  
  <p>Can it be done? How would a <code>form_tag</code> change to use simple_form correctly? What about when using it with <code>fields_for</code>? A Newbie could use some help.</p>
  
  <p>Thank you.</p>