vendor/symfony/form/FormBuilder.php line 74
<?php/** This file is part of the Symfony package.** (c) Fabien Potencier <fabien@symfony.com>** For the full copyright and license information, please view the LICENSE* file that was distributed with this source code.*/namespace Symfony\Component\Form;use Symfony\Component\EventDispatcher\EventDispatcherInterface;use Symfony\Component\Form\Exception\BadMethodCallException;use Symfony\Component\Form\Exception\InvalidArgumentException;use Symfony\Component\Form\Exception\UnexpectedTypeException;use Symfony\Component\Form\Extension\Core\Type\TextType;/*** A builder for creating {@link Form} instances.** @author Bernhard Schussek <bschussek@gmail.com>** @implements \IteratorAggregate<string, FormBuilderInterface>*/class FormBuilder extends FormConfigBuilder implements \IteratorAggregate, FormBuilderInterface{/*** The children of the form builder.** @var FormBuilderInterface[]*/private array $children = [];/*** The data of children who haven't been converted to form builders yet.*/private array $unresolvedChildren = [];public function __construct(?string $name, ?string $dataClass, EventDispatcherInterface $dispatcher, FormFactoryInterface $factory, array $options = []){parent::__construct($name, $dataClass, $dispatcher, $options);$this->setFormFactory($factory);}public function add(FormBuilderInterface|string $child, string $type = null, array $options = []): static{if ($this->locked) {throw new BadMethodCallException('FormBuilder methods cannot be accessed anymore once the builder is turned into a FormConfigInterface instance.');}if ($child instanceof FormBuilderInterface) {$this->children[$child->getName()] = $child;// In case an unresolved child with the same name existsunset($this->unresolvedChildren[$child->getName()]);return $this;}if (!\is_string($child) && !\is_int($child)) {throw new UnexpectedTypeException($child, 'string or Symfony\Component\Form\FormBuilderInterface');}// Add to "children" to maintain order$this->children[$child] = null;$this->unresolvedChildren[$child] = [$type, $options];return $this;}public function create(string $name, string $type = null, array $options = []): FormBuilderInterface{if ($this->locked) {throw new BadMethodCallException('FormBuilder methods cannot be accessed anymore once the builder is turned into a FormConfigInterface instance.');}if (null === $type && null === $this->getDataClass()) {$type = TextType::class;}if (null !== $type) {return $this->getFormFactory()->createNamedBuilder($name, $type, null, $options);}return $this->getFormFactory()->createBuilderForProperty($this->getDataClass(), $name, null, $options);}public function get(string $name): FormBuilderInterface{if ($this->locked) {throw new BadMethodCallException('FormBuilder methods cannot be accessed anymore once the builder is turned into a FormConfigInterface instance.');}if (isset($this->unresolvedChildren[$name])) {return $this->resolveChild($name);}if (isset($this->children[$name])) {return $this->children[$name];}throw new InvalidArgumentException(sprintf('The child with the name "%s" does not exist.', $name));}public function remove(string $name): static{if ($this->locked) {throw new BadMethodCallException('FormBuilder methods cannot be accessed anymore once the builder is turned into a FormConfigInterface instance.');}unset($this->unresolvedChildren[$name], $this->children[$name]);return $this;}public function has(string $name): bool{if ($this->locked) {throw new BadMethodCallException('FormBuilder methods cannot be accessed anymore once the builder is turned into a FormConfigInterface instance.');}return isset($this->unresolvedChildren[$name]) || isset($this->children[$name]);}public function all(): array{if ($this->locked) {throw new BadMethodCallException('FormBuilder methods cannot be accessed anymore once the builder is turned into a FormConfigInterface instance.');}$this->resolveChildren();return $this->children;}public function count(): int{if ($this->locked) {throw new BadMethodCallException('FormBuilder methods cannot be accessed anymore once the builder is turned into a FormConfigInterface instance.');}return \count($this->children);}public function getFormConfig(): FormConfigInterface{/** @var $config self */$config = parent::getFormConfig();$config->children = [];$config->unresolvedChildren = [];return $config;}public function getForm(): FormInterface{if ($this->locked) {throw new BadMethodCallException('FormBuilder methods cannot be accessed anymore once the builder is turned into a FormConfigInterface instance.');}$this->resolveChildren();$form = new Form($this->getFormConfig());foreach ($this->children as $child) {// Automatic initialization is only supported on root forms$form->add($child->setAutoInitialize(false)->getForm());}if ($this->getAutoInitialize()) {// Automatically initialize the form if it is configured so$form->initialize();}return $form;}/*** @return \Traversable<string, FormBuilderInterface>*/public function getIterator(): \Traversable{if ($this->locked) {throw new BadMethodCallException('FormBuilder methods cannot be accessed anymore once the builder is turned into a FormConfigInterface instance.');}return new \ArrayIterator($this->all());}/*** Converts an unresolved child into a {@link FormBuilderInterface} instance.*/private function resolveChild(string $name): FormBuilderInterface{[$type, $options] = $this->unresolvedChildren[$name];unset($this->unresolvedChildren[$name]);return $this->children[$name] = $this->create($name, $type, $options);}/*** Converts all unresolved children into {@link FormBuilder} instances.*/private function resolveChildren(){foreach ($this->unresolvedChildren as $name => $info) {$this->children[$name] = $this->create($name, $info[0], $info[1]);}$this->unresolvedChildren = [];}}