How to get dynamic select_tag params in controller
<pre><code>&lt;%= @questions.each do |question| %&gt;
   &lt;%= select_tag "campaign_#{question['id']}",options_from_collection_for_select(current_advertiser.campaigns.all, "id", "title", selected_value || 0) %&gt;
&lt;% end %&gt;
</code></pre>

<p>Now how I get the selected value in controller. Meanz they are dynamic then how I get <code>params[?]</code></p>