Set default value on Datetime field in symfony2 form

Question

I have a form containing several fields. One of them is a Datetime field. How to define a default value for that field?

I\'ve tried setting a value on the related e

Answer 1

Elnur's answer is correct and is perhaps the recommended one. But for completeness, an alternative way to set the default value for a date widget in a form is to specify the data key in the options array argument with an instance of DateTime.

$builder->add('myDate', 'date', array(
    'data' => new \DateTime()
));

Note: This will overwrite the previously set datetime on every edit.

Answer 2

Set it in the entity constructor:

class Entity
{
    /**
     * @var \DateTime
     */
    private $date;

    public function __construct()
    {
        $this->date = new \DateTime();
    }
}

Answer 3

You can set the attributes to on update CURRENT_TIMESTAMP and defualt to current time stamp will update the current time stamp automatically without updating through query

`feildname` timestamp NOT NULL default CURRENT_TIMESTAMP on update CURRENT_TIMESTAMP

Answer 4

This solution doesn't require modifying your entity object.

    $builder->add('myDate', DateTimeType::class, [
        'label' => 'My Date',
        'required' => false,
        'date_widget' => 'single_text',
        'time_widget' => 'single_text',
        'date_format' => 'dd/MM/yyyy'
    ]);

    $builder->get('myDate')->addModelTransformer(new CallbackTransformer(
        function ($value) {
            if(!$value) {
                return new \DateTime('now +1 month');
            }
            return $value;
        },
        function ($value) {
            return $value;
        }
    ));

This solution applies the behaviour to just this form, it does not couple this behaviour to the entity itself. You might have several forms that modify an entity with different required behaviours. Some require a default date, others don't.