Doctrine 2.1 - datetime column default value

Could someone tell me how to add the default value on a DateTime column? I can't do it like this:

protected $registra开发者_如何学Pythontion_date = date("Y-m-d H:i:s", time());

So how can I handle it?

For default value CURRENT_TIMESTAMP:

     @ORM\Column(name="created_at", type="datetime", options={"default": "CURRENT_TIMESTAMP"})

Or for older Symfony versions:

     @ORM\Column(name="created_at", type="datetime", options={"default": 0})

Worked for me... However this works only with MySQL.

You map your property as DateTime type then set the value in the constructor using a new DateTime instance:

/**
 * @Entity
 * @Table(name="...")
 */
class MyEntity
{
    /** @Column(type="datetime") */
    protected $registration_date;

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

This works as the constructor of a persisted class is not called upon hydration.

You can also use lifecycle callbacks if you want to be very precise:

use Doctrine\ORM\Mapping as ORM;

/**
 * @ORM\HasLifecycleCallbacks
 * ...
 */
class MyEntity
{
    /**
     * @ORM\PrePersist
     */
    public function onPrePersistSetRegistrationDate()
    {
        $this->registration_date = new \DateTime();
    }
}

There is an extension for this automating this...

https://github.com/l3pp4rd/DoctrineExtensions/blob/master/doc/timestampable.md

/**
     * @var \DateTime
     *
     * @ORM\Column(name="date_added", type="datetime")
     * @Gedmo\Timestampable(on="create")
     */
    private $date_added;

    /**
     * @var \DateTime
     *
     * @ORM\Column(name="date_modified", type="datetime")
     * @Gedmo\Timestampable(on="update")
     */
    private $date_modified;

I think, the best way to accomplish autofill for datetime is to make like that:

* @ORM\Column(type="datetime", options={"default"="CURRENT_TIMESTAMP"})

Putting logic to constructor isn't right solution, because setting default values are SQL client responsibility. If you decide no longer use ORM - you will lost business logic. Plus, if using constructor you won't be able to add default timestamps to datetime attributes for existing rows.

@var string @ORM\Column(name="login_at", type="datetime", options={"default" = "CURRENT_TIMESTAMP"})

This will work. Just posting for future ref.

Work for me with MySql and Symfony 3.4.

...
fields:
    start_date:
        type: date
        nullable: false
        options:
            default: '1910-01-01'
            comment: 'The default date is 1910-01-01'
...