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Define Custom Form Type for Fields

Extended fields are rendered as HTML controls, and control type (text, textarea, number, checkbox, etc.) is defined by classes that implement Symfony\Component\Form\FormTypeGuesserInterface.

In case of extended fields, OroPlatform has three guessers (in decreasing priority): FormConfigGuesser, ExtendFieldTypeGuesser and DoctrineTypeGuesser.

Each provides guesses, and the best guess is selected based on the guesser’s confidence (low, medium, high, very high).

There are a few ways to define a custom form type and form options for a particular extended field:

  1. Through the compiler pass to add or override the guesser’s mappings:

      namespace Acme\Bundle\DemoBundle\DependencyInjection\Compiler;
      use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
      use Symfony\Component\DependencyInjection\ContainerBuilder;
      use Symfony\Component\Form\Extension\Core\Type\TimeType;
      class AcmeExtendGuesserPass implements CompilerPassInterface
          public function process(ContainerBuilder $container): void
              $guesser = $container->findDefinition('oro_entity_extend.provider.extend_field_form_type');
                  ['time', TimeType::class, ['model_timezone' => "UTC", 'view_timezone' => "UTC"]]
  2. With a custom form extend field options provider that can be used for providing form options that need a complex logic and cannot be declared in compiler pass:

      class ExtendFieldCustomFormOptionsProvider implements ExtendFieldFormOptionsProviderInterface
          public function getOptions(string $className, string $fieldName): array
              $options = [];
              if ($className == '...' && $fieldName == '...') {
                  $options['custom_option'] = 'custom_value';
              return $options;

    Register it in the dependency injection container:

          class: Acme\Bundle\DemoBundle\Provider\ExtendFieldCustomFormOptionsProvider
            - { name: acme_entity_extend.form_options_provider }
  3. With a custom guesser that will have higher priority or will provide a guess with the highest confidence value:

      class CustomTypeGuesser implements FormTypeGuesserInterface
          public function guessType($className, $property)
              // some conditions here
              if ($className == '...' && $property == '') {
                  $guessedType = '';
                  $options = [...];
                  return new TypeGuess($guessedType, $options, TypeGuess::HIGH_CONFIDENCE);
              // not guessed
              return new ValueGuess(false, ValueGuess::LOW_CONFIDENCE);
          public function guessRequired($class, $property)
              return new ValueGuess(false, ValueGuess::LOW_CONFIDENCE);
          public function guessMaxLength($class, $property)
              return new ValueGuess(null, ValueGuess::LOW_CONFIDENCE);
          public function guessPattern($class, $property)
              return new ValueGuess(null, ValueGuess::LOW_CONFIDENCE);

    Register it in the dependency injection container:

        class: Acme\Bundle\DemoBundle\Form\Guesser\CustomTypeGuesser
            - { name: form.type_guesser, priority: N }

    Here is an idea of what N should be, the existing guessers have the following priorities:

    Guesser Priority
    FormConfigGuesser 20
    ExtendFieldTypeGuesser 15
    DoctrineTypeGuesser 10

    Select it according to what you need to achieve.

  4. Using annotation to a field or a related entity (if an extended field is an association)

     * @Config(
     *      defaultValues={
     *          "form"={
     *              "form_type"="Oro\Bundle\UserBundle\Form\Type\UserSelectType",
     *              "form_option"="{option1: ..., ...}"
     *          }
     *      }
     * )