Symfony/Doctrine: DateTime as primary key

Question

I am trying to make an Entity using a date as a primary key. The problem is that Symfony can\'t convert the DateTime I\'m using into a string to introduce it in the Identity

Answer 1

I had the same problem here. I worked around it by using this:

/**
 * @var string
 *
 * @ORM\Id
 * @ORM\Column(type="string")
 */
private $date;

/**
 * @return \DateTime
 */
public function getDate()
{
    return \DateTime::createFromFormat('Y-m-d|', $this->date);
}

/**
 * @param \DateTime $date
 */
public function __construct(\DateTime $date)
{
    $this->date = $date->format('Y-m-d');
}

if you want to use datetime, you should use a different format like \DateTime::ISO8601. Be careful at saving stuff with timezones.