Symfony2 Form: Automatically adds NotBlank constraint and bootstrap validation message for required fields
When creating a form in Symfony2 with validation and custom error messages for required fields, I need to manually specify NotBlank constraints and custom error message attributes for client side validation (using Bootstrap Validator). The code looks like this for each form field:
$builder->add('name', 'text', array(
'required' => true,
'constraints' => array(
new NotBlank(array('message' => 'Bitte geben Sie Ihren Namen ein.')),
),
'attr' => array(
// This is for client side bootstrap validator
'data-bv-notempty-message' => 'Bitte geben Sie Ihren Namen ein.'
)
));
What I'm looking for is the ability to make it shorter by specifying required_requirement just once:
$builder->add('name', 'text', array(
'required_message' => 'Bitte geben Sie Ihren Namen ein.'
));
and I would like the builder to create a NotBlank constraint and a data-bv-notempty-message attribute.
What's the best way to achieve this? By creating a form type extension?
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The solution I'm currently using is this: In the type class of my form (or in the Controller class when creating forms on the fly without the Type class), I add a private function addRequired
that I use to add the required fields:
class MyFormWithRequiredFieldsType extends AbstractType
{
private $builder;
private function addRequired($name, $type = null, $options = array())
{
$required_message = 'Bitte füllen Sie dieses Feld aus';
if (isset($options['required_message'])) {
$required_message = $options['required_message'];
unset($options['required_message']);
}
$options['required'] = true;
$options['attr']['data-bv-notempty-message'] = $required_message;
if (!isset($options['constraints'])) {
$options['constraints'] = array();
}
$options['constraints'][] = new NotBlank(array(
'message' => $required_message
));
$this->builder->add($name, $type, $options);
}
public function buildForm(FormBuilderInterface $builder, array $options)
{
$this->builder = $builder;
$this->addRequired('name', 'text', array(
'required_message' => 'Bitte geben Sie Ihren Namen ein'
));
}
}
This works, but what I don't like about this solution is that in order to add required fields, I have to call $this->addRequired()
instead $builder->add()
, and so I lose the ability to chain calls add()
. This is why I am looking for a solution to transparently override the method $builder->add()
.
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