Monday, July 22, 2013

Overriding the ZF1 Zend_Form Validator's setRequired message

The Zend_Form_Element's isRequired() method uses the Zend_Validate_NotEmpty validator under the hood and thus uses its message template for outputs.

For simple Zend_Form_Element_Text override you can just do this:

$e = new Zend_Form_Element_Text('text_element');
$e->setRequired(true) // needs to be true
  ->addValidators(array('NotEmpty')); // needs to be explicitly set
$e->getValidator('NotEmpty')
  ->setMessage(
      'This is my new message that you entered an empty string!',
      Zend_Validate_NotEmpty::IS_EMPTY
  );

For Multi elements though, you need to set the NotEmpty's breakChainOnFailure to true as below:

$e = new Zend_Form_Element_MultiCheckbox('text_element');
$e->setRequired(true); // needs to be true
  ->addValidators(array(
      array('NotEmpty', true) // notice "true" is set for breakChain option
  ));

$e->getValidator('NotEmpty')
  ->setMessage(
      'This is my new message that you entered an empty string!',
      Zend_Validate_NotEmpty::IS_EMPTY
  );

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