manage field population in edit form - php

Question

I'm using symfony 4 and I have this form:
<?php
namespace App\Form;
use Symfony\Component\Form\Extension\Core\Type\TextType;
use Symfony\Component\Form\Extension\Core\Type\DateTimeType;
use Symfony\Component\Form\Extension\Core\Type\TimeType;
use Symfony\Component\Form\Extension\Core\Type\DateType;
use Symfony\Component\Form\Extension\Core\Type\CollectionType;
use App\Entity\TypeParking;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolver;
class TypeParkingType extends AbstractType
{
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder
->add('libelle')
->add('tempsmax')
->add('jourdebut')
->add('jourfin')
->add('Exception_Name', TextType::class, ['property_path' => 'exception[name]'])
->add('Starting_date', DateType::class, [
'property_path' => 'exception[datedebut]',
])
->add('Ending_date', DateType::class, [
'property_path' => 'exception[datefin]',
])
->add('Starting_time', TimeType::class, ['property_path' => 'exception[heuredebut]'])
->add('Ending_time', TimeType::class, ['property_path' => 'exception[heurefin]'])
;
}
public function configureOptions(OptionsResolver $resolver)
{
$resolver->setDefaults([
'data_class' => TypeParking::class,
]);
}
}
When I create a new form I usually take the values of Exception_Name,Starting_date,Ending_date,Starting_time and Ending_time manually and put them into a single json array in a single database field.
However when I go to edit the form, the data inside the json doesn't get divided to populate each of the fields.
let's say that I have this json array: {"Exceptions": {"name": "6fdfs", "StartDate": "2015-03-03", "StartHour": "00:00:00", "EndingDate": "2015-03-03", "EndingHour": "00:00:00"}}
I'm gonna take the name value and use it to populate the Exception_Name field, etc...
TL;DR: How can I control how I want to pre-populate each field of the edit form
Edit:
this is my datamapper
<?php
// src/Form/DataMapper/ColorMapper.php
namespace App\Form\DataMapper;
use App\Painting\Color;
use Symfony\Component\Form\DataMapperInterface;
use Symfony\Component\Form\Exception\UnexpectedTypeException;
use Symfony\Component\Form\FormInterface;
final class TypeParkingMapper implements DataMapperInterface
{
/**
* #param TypeParking|null $data
*/
public function mapDataToForms($data, $forms)
{
// there is no data yet, so nothing to prepopulate
if (null === $data) {
return;
}
/** #var FormInterface[] $forms */
$forms = iterator_to_array($forms);
// initialize form field values
$Excep=$data->getException();
$forms['Exception_Name']->setData($Excep['Exceptions']['name']);
$forms['Starting_date']->setData($Excep['Exceptions']['StartDate']);
$forms['Ending_date']->setData($Excep['Exceptions']['EndingDate']);
$forms['Starting_time']->setData($Excep['Exceptions']['StartHour']);
$forms['Ending_time']->setData($Excep['Exceptions']['EndingHoure']);
}
public function mapFormsToData($forms, &$data)
{
/** #var FormInterface[] $forms */
$forms = iterator_to_array($forms);
// as data is passed by reference, overriding it will change it in
// the form object as well
// beware of type inconsistency, see caution below
$data = new TypeParking(
$forms['Exception_Name']->getData()
);
}
}
So it works fine when I edit an object (since getException() returns the json array from my database), but when I create a new object it throws an error since there's no data to get.
So is there any way I can turn the mapper off when I create a new form and only activate it when editing a form ?
the error is : "Notice: Undefined index: Exceptions"

Answer 1

You could write a DataMapper to fully control how your data is mapped to your form.