Question

My Entity:

/**
 * @var \DateTime $publishedAt
 *
 * @ORM\Column(name="published_at", type="date")
 * 
 * @Assert\Date()
 */
private $publishedAt;

/**
 * Set publishedAt
 *
 * @param \DateTime $publishedAt
 * @return MagazineIssue
 */
public function setPublishedAt(\DateTime $publishedAt)
{
    $this->publishedAt = $publishedAt;

    return $this;
}

/**
 * Get published_at
 *
 * @return \DateTime 
 */
public function getPublishedAt()
{
    return $this->publishedAt;
}

My form builder:

$builder->add('publishedAt');

My view:

{{ form_widget(form) }}

When I select the date in the selects and submit the form I catche the error:

Catchable Fatal Error: Argument 1 passed to ... must be an instance of DateTime, 
string given, called in .../vendor/symfony/symfony/src/Symfony/Component/Form
/Util/PropertyPath.php on line 537 and defined in ... line 214 

Why it happens? If I replace the field setter with public function setPublishedAt($publishedAt) I got the error:

Fatal error: Call to a member function format() on a non-object 
in .../vendor/doctrine/dbal/lib/Doctrine/DBAL/Types/DateType.php on line 44 

If I change the form builder to

 $builder->add('publishedAt','date')

all works fine. Why it happens? Why symfony can’t guess it and pass to field setter the proper date format (\DateTime instead of string)?

EDIT: if I remove the @Assert\Date() then all works fine too. I think it’s a sf2.1 bug with guessing the date field type

Answer 1

To solve this problem you can

1.change the assert from @Assert\Date() to @Assert\Type('\DateTime')

OR

2.change the form builder to $builder->add('publishedAt','date')

OR

3.specify the input option in the form builder: $builder->add('publishedAt',null,array('input' => 'datetime'))