Symfony2: DateTime and form validation

Question

I need to know whats the usual way to handle datetime via forms.

I have a property in my entity like

/**
 * @var \DateTime
 *
 * @ORM\Column(name="founded", type="datetime", nullable=true)
 */
private $founded;

Then i render the form via FormTypes

->add('founded', 'date', array('widget' => 'single_text', 'format' => 'dd.MM.yyyy'))

The user then inputs a string like 01.01.1892 And sends it to the server via ajax:

form_team[basicdata][founded]:01.01.1914

In the controller i process the data and validate it:

$form = $this->createForm(new TeamsType(), $team);
$form->submit($this->getRequest()->request->get($form->getName()));

if ($form->isValid()) {
...

The thing is, that validation allways fails with: This value is not valid. I guess a datetime object is expected, but the client just delivers a string.

How is that workflow supposed to be working? Please help me with that :)

I think you should use datatransformer to transform the client data to datetime. see symfony.com/doc/current/cookbook/form/data_transformers.html — Benjamin Lazarecki
– Benjamin Lazarecki, Commented May 6, 2014 at 13:53
i guess this is a day to day issue. how is it normaly done? there should be already solutions for this i think... ? — user1754242
– user1754242, Commented May 6, 2014 at 14:36
I need to know what the validation needs to get her. i cant the hell figure it out what is the client supposed to send. its impossible to send 01.01.1893 for example, i allways get "This value is not valid." i have no clue where the error is throwen and what it expects to get to not throw that error.... — user1754242
– user1754242, Commented May 7, 2014 at 12:08

Jovan Perovic · Accepted Answer · 2014-05-06 15:28:32Z

1

@Benjamin Lazarecki is right.

You need to transform the string data (comming from within your form) to DateTime object. However, that transformer has been already implemented here:

http://api.symfony.com/master/Symfony/Component/Form/Extension/Core/DataTransformer/DateTimeToStringTransformer.html

So, you can just and plug 'n' play it ;)

answered May 6, 2014 at 15:28

Jovan Perovic

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2 Comments

user1754242 Over a year ago

Is this the usual way? I dont get it why i have to transform the object manually when i use the form component, isnt it supposed to handeled automatically buy the framework? i guess its a usual usecase to render a datetime property of an entity in a forminput and process it back to server. i can configure the 'input' => 'datetime' parameter in the formtype, so i guess it should be handeled automatically

Benjamin Lazarecki Over a year ago

You have to use transformer because you have change the widget.

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