Symfony2: How to Call functions in Repository class from Type

Question

I'm new in symfony2 ver 2.7: I would like to create registration number in form with data from count rows in existing table.

It's OK when i create in PatientController and show the result in twig format. But i need show the result in text type form. I write in PatientRepository a function:

public function getNumberPatient()
{
    $qb = $this->createQueryBuilder('name')
        ->select('COUNT(name)');
    return (int)$qb->getQuery()
        ->getSingleScalarResult();
}

And in my Entity file to generate like this:

 public function buildForm(FormBuilderInterface $builder, array $options)
{
    $builder
        ->add('name')
        ->add('dateBirth', 'date', array(
            'years' => range(date('Y'), date('Y', strtotime('-50 years'))),
            'required' => TRUE,
        ))
        ->add('regCode', 'text', array(
            'required' => TRUE,
            'data' => function(PatientRepository $r){
                    return $r->getNumberPatient();
                },

I have a trouble when i call this function from PatientEntity. Is it Possible?

I did create function with:

'query_builder' => function(PatientRepository $r){
                    return $r->getNumberPatient();

but it give an error

The option "query_builder" does not exist. Defined options are: "action",

Please help me..

Answer 1

There are multiple ways to do it:

• You can get the data in controller, then pass it to form, like this:

example in controller:

public function someAction()
{
    $data = $em->getRepository(...)->getNumberPatient();
    $form = $this->createForm(new MyFormType, NULL_OR_OBJECT, [
       'text_data' => $data
    ]);
    ...
}

MyFormType:

public function buildForm(FormBuilderInterface $builder, array $options)
{
    $data = $options['text_data'];

    $builder
        ->add('regCode', 'text', ['data' => $data])
        ...
}

public function configureOptions(OptionsResolver $resolver)
{
    $resolver->setDefaults(['text_data' => null]);
}

• Another way, declare your form type as a service, inject the entity manager:

example:

class MyFormType extends AbstractType
{
    private $entityManager;

    public function __construct(EntityManagerInterface $entityManager)
    {
        $this->entityManager = $entityManager;
    }

    // use it like $this->entityManager->...
}

• another way, pass the entityManager to form like 1-option, then get by $options array, like this $entityManager = $options['entityManager'], or you can even pass the entityManager to constructor.. Here you can see it..