Symfony2 populate choice list from api data

Question

I have to populate a choice list from an Api call. I have try several approach without success.

I think the best way is by implementing ChoiceListInterface.

Does someone has already done it ?

Thanks

I've just answered similar question here: stackoverflow.com/questions/13285281/… See the "UPDATE" section of the answer... — Jovan Perovic
– Jovan Perovic, Commented Nov 9, 2012 at 21:09

Mun Mun Das · Accepted Answer · 2012-11-10 08:19:13Z

13

Extend LazyChoiceList and implement loadChoiceList method, e.g

//ApiChoiceList.php
namespace Your\Namespace;
use Symfony\Component\Form\Extension\Core\ChoiceList\LazyChoiceList;
use Symfony\Component\Form\Extension\Core\ChoiceList\ChoiceList;

class ApiChoiceList extends LazyChoiceList 
{
    protected function loadChoiceList()
    {
        //fetch and process api data

        return new ChoiceList($choices, $labels);

    }
}

And then in your buildForm method of your form,

$builder->add('fieldname', 'choice', array(
    'choice_list' => new Your\Namespace\ApiChoiceList(),
    //....
));

answered Nov 10, 2012 at 8:19

Mun Mun Das

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3 Comments

Mick Over a year ago

+1 @m2mdas, this is great. Just a quick question. The ApiChoiceList will contain all the choices that will be used in the form. Is there anything to do in the entity to make sure the data suits the ApiChoiceList?

Tek Over a year ago

Might want to add the extra awesome choice list as service to your answer. :)

Vincent Guyard Over a year ago

how to use this choice list in the twig view to display the value in the showAction?

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