title: Adding a confirmation checkbox to a form in Rails not tied to some attribute?
body: <p>Noob question! :)</p>
  
  <p>I have a form, that has basically no point other than call <code>some_action</code>. The reason I use a form for this, is because we have a specific styling for this in our large website.</p>
  
  <pre><code>&lt;%= styled_form_for(@user, :url =&gt; some_action_user_path @user)) do |f| %&gt;
      &lt;%= f.save_button %&gt;
  &lt;% end %&gt;
  </code></pre>
  
  <p>I thought, since it's a form, I should be able to put a checkbox in there. It should have no other goal than confirming the user wants to do this action indeed. E.g. "Yes, I want to do <code>some_action</code> to the user model".</p>
  
  <p>How would I make a checkbox that does not really change any attribute or affect anything - Other than that it should be checked for the form to submit?</p>
  
  <p>This is probably dead simple, but according to the documentation and various error messages I should provide arguments such an attribute (which I don't want...)</p>