ASF_20_SRC_AUTO/src/blocks/woody/samples/forms/registration.xml

<?xml version="1.0" encoding="ISO-8859-1"?>
<wd:form
  xmlns:wd="http://apache.org/cocoon/woody/definition/1.0"
  xmlns:i18n="http://apache.org/cocoon/i18n/2.1">

  <wd:widgets>
    <wd:field id="name" required="true">
      <wd:label>Name:</wd:label>
      <wd:datatype base="string">
        <wd:validation>
          <wd:length min="2"/>
        </wd:validation>
      </wd:datatype>
    </wd:field>
  
    <wd:field id="email" required="true">
      <wd:label>Email address:</wd:label>
      <wd:datatype base="string">
        <wd:validation>
          <wd:email/>
        </wd:validation>
      </wd:datatype>
    </wd:field>
  
    <wd:field id="age">
      <wd:label>Your age:</wd:label>
      <wd:datatype base="long">
        <wd:validation>
          <wd:range min="0" max="150"/>
        </wd:validation>
      </wd:datatype>
    </wd:field>
  
    <wd:field id="password" required="true">
      <wd:label>Password:</wd:label>
      <wd:datatype base="string">
        <wd:validation>
          <wd:length min="5" max="20"/>
        </wd:validation>
      </wd:datatype>
    </wd:field>
  
    <wd:field id="confirmPassword" required="true">
      <wd:label>Re-enter password:</wd:label>
      <wd:datatype base="string">
        <wd:validation>
          <wd:assert test="password = confirmPassword">
            <wd:failmessage>The two passwords are not equal.</wd:failmessage>
          </wd:assert>
        </wd:validation>
      </wd:datatype>
    </wd:field>
  
    <wd:booleanfield id="spam">
      <wd:label>Send me spam</wd:label>
    </wd:booleanfield>
  </wd:widgets>

</wd:form>