title: How to verify if update_all was actually updated in Rails
body: <p>Given this code</p>
  
  <pre><code>def create
    @upgrades = User.update_all(["role = ?","upgraded"], :id =&gt; params[:upgrade])
    redirect_to admin_upgrades_path, :notice =&gt; "Successfully upgraded user."    
  end
  </code></pre>
  
  <p>How can I actually verify in that action if they were saved or not to redirect to appropriate page and message?</p>