title: Magento Observer on checkout
body: <p>I just followed a tutorial on how to create a simple model observer. Can someone here help me or point me to the right direction to call the method when the user clicks "proceed to checkout"? </p>
  
  <p>Here is the code:</p>
  
  <pre><code> &lt;events&gt;
    &lt;checkout_onepage_controller_success_action&gt;
      &lt;observers&gt;
        &lt;sales_order_place_before&gt;
          &lt;type&gt;singleton&lt;/type&gt;
          &lt;class&gt;my_Observer&lt;/class&gt;
          &lt;method&gt;send_email&lt;/method&gt;
        &lt;/sales_order_place_before&gt;
      &lt;/observers&gt;
    &lt;/checkout_onepage_controller_success_action&gt;     
   &lt;/events&gt; 
  </code></pre>