MultiCheckbox custom message for validation not working

[weierophinney]

I have an issue happening only for a MultiCheckbox Element, with ZF 2.4.9.

In my form, I create two elements : a text field and a MultiCheckbox field, with this code :

$this->add(array(
    'name' => 'name',
    'type' => 'Text'
));

$value_options = array(
//...
);

$this->add(array(
    'type' => 'Zend\Form\Element\MultiCheckbox',
    'name' => 'equipments',
    'options' => array(
        'value_options' => $value_options,
    )
));

Then, I had the following filter validators :

$this->add(array(
    'name' => 'name',
    'required' => true,
    'validators' => array(
        array(
            'name' => 'Zend\Validator\NotEmpty',
            'options' => array(
               'messages' => array(
                   \Zend\Validator\NotEmpty::IS_EMPTY => 'Please set a name.',
                )
            )
        ),
    ),
));

$this->add(array(
    'name' => 'equipments',
    'required' => true,
    'validators' => array(
        array(
           'name' => 'Zend\Validator\NotEmpty',
            'options' => array(
                'messages' => array(
                    \Zend\Validator\NotEmpty::IS_EMPTY => 'Please select at least one equipment.',
                )
            )
        )
    ),
));

In the end, if I submit my form with no value in any field, two error messages are displayed : Please set a name, which is the good one for name, but for equipments, the default error message is displaying : Value is required and can't be empty.

There must be a problem somewhere when choosing to display the message.

---

Originally posted by @chougron at zendframework/zend-form#177