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<?php |
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declare(strict_types=1); |
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namespace Zlikavac32\SymfonyEnum\Form\Type; |
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use LogicException; |
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use Symfony\Component\Form\Extension\Core\Type\ChoiceType; |
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use Symfony\Component\Form\FormBuilderInterface; |
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use Symfony\Component\OptionsResolver\OptionsResolver; |
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use function Zlikavac32\Enum\assertFqnIsEnumClass; |
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use Zlikavac32\Enum\Enum; |
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class EnumType extends ChoiceType |
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{ |
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public function buildForm(FormBuilderInterface $builder, array $options) |
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{ |
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$this->assertThatOverriddenOptionsAreNotSet($options); |
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/* @var Enum|string $enumClass */ |
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$enumClass = $options['enum_class']; |
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assertFqnIsEnumClass($enumClass); |
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$options = $this->populateOptionsWithDefaults($options); |
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parent::buildForm( |
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$builder, |
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[ |
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'choices' => $this->buildChoicesForEnumClass($enumClass), |
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'choice_loader' => null, |
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] + $options |
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); |
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} |
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private function populateOptionsWithDefaults(array $options): array |
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{ |
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$elementNameClosure = function (?Enum $enum): string { |
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if (null === $enum) { |
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return ''; |
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} |
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return $enum->name(); |
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}; |
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foreach (['choice_label', 'choice_value'] as $optionKey) { |
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if (isset($options[$optionKey])) { |
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continue; |
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} |
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$options[$optionKey] = $elementNameClosure; |
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} |
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return $options; |
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} |
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private function buildChoicesForEnumClass(string $enumClass): array |
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{ |
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$choices = []; |
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/* @var Enum $enumClass Just for IDE auto-complete support */ |
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foreach ($enumClass::values() as $element) { |
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$choices[$element->name()] = $element; |
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} |
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return $choices; |
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} |
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private function assertThatOverriddenOptionsAreNotSet(array $options): void |
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{ |
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$optionsToCheckFor = [ |
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'choices', |
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'choice_loader', |
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]; |
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foreach ($optionsToCheckFor as $optionName) { |
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if (empty($options[$optionName])) { |
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continue; |
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} |
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throw new LogicException( |
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sprintf('Option %s is overridden by the type so don\'t pass your own value', $optionName) |
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); |
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} |
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} |
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public function configureOptions(OptionsResolver $resolver): void |
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{ |
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parent::configureOptions($resolver); |
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$resolver->setDefaults(['enum_class' => null]) |
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->setAllowedTypes('enum_class', ['string']); |
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} |
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} |
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zlikavac32 /
php-enum-symfony
