title: Difference between fields_for syntax
body: <p>Is there any difference between: </p>
  
  <pre><code>&lt;%= event_form.fields_for :client, @client do |client| %&gt;
  </code></pre>
  
  <p>and</p>
  
  <pre><code>&lt;%= fields_for @event, :client, @client do |client| %&gt;
  </code></pre>
  
  <p>The parent form looks like this:</p>
  
  <pre><code>&lt;% form_for @event do |event_form| %&gt;
  </code></pre>