A Controller for the Very Simple Form

• A submit element in the HTML body draws a user interface control that enables the user to submit the form:

  <submit xmlns="http://www.w3.org/2002/xforms" submission="q0">
    <label>Order</label>
  </submit>

• A submission element in the model specifies where and how the data is transmitted:

  <model xmlns="http://www.w3.org/2002/xforms" id="p1"
    xmlns:xsd="http://www.w3.org/2001/XMLSchema" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" >
    <instance>
      <doughnuts xmlns="http://www.example.org/doughnuts/">
        <quantity xsi:type="xsd:nonNegativeInteger"/>
      </doughnuts>
    </instance>
    <submission action="http://www.example.org/formprocessor.php"
        method="post" id="q0" />
  </model>

• When the user submits the form, the browser posts the model element to the URL specified by the action attribute.

• The server responds with an HTTP 200 OK and a typical HTML page (or with various error messages)