Symfony Validation of DateTime fails due to not being string?

Question

I have the following for:

formFactory->create(FormType::class);
$form->submit(['startDate' => new \DateTime('2020-01-01')]);

Note: if I use 'startDate' => '2020-01-01' then it works. Within FormType I have the following:

$builder->add('startDate', DateType::class, [
    'widget' => 'single_text',
    'format' => 'yyyy-MM-dd',
]);

The config options are as follows:

public function configureOptions(OptionsResolver $resolver)
    {
        $resolver->setDefaults([
            'data_class' => Event::class
        ]);
    }

And in the Event entity I have a field like this:

/**
     * @var \DateTime
     * @ODM\Field(type="date")
     * @Assert\NotBlank()
     */
    private $startDate;

Yet I keep getting this error and not sure why?

"startDate":["This value is not valid."]

I have Symfony 4.4.10.

Jakumi · Accepted Answer · 2020-07-15 13:26:03Z

1

In case you're trying to pre-set data, submit is the wrong tool for the job. It's literally meant to handle a submission in normalized form (array with scalar values and arrays). Instead use the second parameter for FormFactory::create to preset data:

$event = new Event();
$event->setStartDate(new \DateTime('2020-01-01'));
$form = $formFactory->create(FormType::class, $event);

edited Jul 15, 2020 at 13:26

answered Jul 15, 2020 at 13:18

Jakumi

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6 Comments

strangeQuirks Over a year ago

In FormFactory? there is no createForm in formFactory

Jakumi Over a year ago

oh, you're right, I was referring to ControllerTrait. it's just the second parameter to create. my bad ;o)

strangeQuirks Over a year ago

Then I remove the submit() right, and now I have this though; Cannot check if an unsubmitted form is valid. Call Form::isSubmitted() before Form::isValid() As i want to check if the values are correct

Jakumi Over a year ago

I'm really confused what your use case is, when you're using forms without a submission ... can you clarify in your question? And if there's no submission, why would you want to validate? In that case, btw. a ValidatorInterface would be better suited to directly validate... ? $errors = $validator->validate($event);

Jakumi Over a year ago

do you receive data from a html form or via an api? in both cases there are slightly different approaches. html form: symfony.com/doc/current/forms.html#processing-forms and something similar to symfony.com/doc/current/form/direct_submit.html for api submissions. the form component is smart and you shouldn't have to "prepare" data for it, just pass it an array with scalar/raw data.

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