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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <[email protected]>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Form\Extension\Validator;
use Symfony\Component\Form\FormTypeGuesserInterface;
use Symfony\Component\Form\Guess\Guess;
use Symfony\Component\Form\Guess\TypeGuess;
use Symfony\Component\Form\Guess\ValueGuess;
use Symfony\Component\Validator\Constraint;
use Symfony\Component\Validator\Mapping\ClassMetadataInterface;
use Symfony\Component\Validator\Mapping\Factory\MetadataFactoryInterface;
class ValidatorTypeGuesser implements FormTypeGuesserInterface
{
private $metadataFactory;
public function __construct(MetadataFactoryInterface $metadataFactory)
{
$this->metadataFactory = $metadataFactory;
}
/**
* {@inheritdoc}
*/
public function guessType(string $class, string $property)
{
return $this->guess($class, $property, function (Constraint $constraint) {
return $this->guessTypeForConstraint($constraint);
});
}
/**
* {@inheritdoc}
*/
public function guessRequired(string $class, string $property)
{
return $this->guess($class, $property, function (Constraint $constraint) {
return $this->guessRequiredForConstraint($constraint);
// If we don't find any constraint telling otherwise, we can assume
// that a field is not required (with LOW_CONFIDENCE)
}, false);
}
/**
* {@inheritdoc}
*/
public function guessMaxLength(string $class, string $property)
{
return $this->guess($class, $property, function (Constraint $constraint) {
return $this->guessMaxLengthForConstraint($constraint);
});
}
/**
* {@inheritdoc}
*/
public function guessPattern(string $class, string $property)
{
return $this->guess($class, $property, function (Constraint $constraint) {
return $this->guessPatternForConstraint($constraint);
});
}
/**
* Guesses a field class name for a given constraint.
*
* @return TypeGuess|null
*/
public function guessTypeForConstraint(Constraint $constraint)
{
switch (\get_class($constraint)) {
case 'Symfony\Component\Validator\Constraints\Type':
switch ($constraint->type) {
case 'array':
return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\CollectionType', [], Guess::MEDIUM_CONFIDENCE);
case 'boolean':
case 'bool':
return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\CheckboxType', [], Guess::MEDIUM_CONFIDENCE);
case 'double':
case 'float':
case 'numeric':
case 'real':
return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\NumberType', [], Guess::MEDIUM_CONFIDENCE);
case 'integer':
case 'int':
case 'long':
return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\IntegerType', [], Guess::MEDIUM_CONFIDENCE);
case \DateTime::class:
case '\DateTime':
return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\DateType', [], Guess::MEDIUM_CONFIDENCE);
case 'string':
return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\TextType', [], Guess::LOW_CONFIDENCE);
}
break;
case 'Symfony\Component\Validator\Constraints\Country':
return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\CountryType', [], Guess::HIGH_CONFIDENCE);
case 'Symfony\Component\Validator\Constraints\Currency':
return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\CurrencyType', [], Guess::HIGH_CONFIDENCE);
case 'Symfony\Component\Validator\Constraints\Date':
return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\DateType', ['input' => 'string'], Guess::HIGH_CONFIDENCE);
case 'Symfony\Component\Validator\Constraints\DateTime':
return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\DateTimeType', ['input' => 'string'], Guess::HIGH_CONFIDENCE);
case 'Symfony\Component\Validator\Constraints\Email':
return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\EmailType', [], Guess::HIGH_CONFIDENCE);
case 'Symfony\Component\Validator\Constraints\File':
case 'Symfony\Component\Validator\Constraints\Image':
$options = [];
if ($constraint->mimeTypes) {
$options = ['attr' => ['accept' => implode(',', (array) $constraint->mimeTypes)]];
}
return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\FileType', $options, Guess::HIGH_CONFIDENCE);
case 'Symfony\Component\Validator\Constraints\Language':
return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\LanguageType', [], Guess::HIGH_CONFIDENCE);
case 'Symfony\Component\Validator\Constraints\Locale':
return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\LocaleType', [], Guess::HIGH_CONFIDENCE);
case 'Symfony\Component\Validator\Constraints\Time':
return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\TimeType', ['input' => 'string'], Guess::HIGH_CONFIDENCE);
case 'Symfony\Component\Validator\Constraints\Url':
return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\UrlType', [], Guess::HIGH_CONFIDENCE);
case 'Symfony\Component\Validator\Constraints\Ip':
return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\TextType', [], Guess::MEDIUM_CONFIDENCE);
case 'Symfony\Component\Validator\Constraints\Length':
case 'Symfony\Component\Validator\Constraints\Regex':
return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\TextType', [], Guess::LOW_CONFIDENCE);
case 'Symfony\Component\Validator\Constraints\Range':
return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\NumberType', [], Guess::LOW_CONFIDENCE);
case 'Symfony\Component\Validator\Constraints\Count':
return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\CollectionType', [], Guess::LOW_CONFIDENCE);
case 'Symfony\Component\Validator\Constraints\IsTrue':
case 'Symfony\Component\Validator\Constraints\IsFalse':
return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\CheckboxType', [], Guess::MEDIUM_CONFIDENCE);
}
return null;
}
/**
* Guesses whether a field is required based on the given constraint.
*
* @return ValueGuess|null
*/
public function guessRequiredForConstraint(Constraint $constraint)
{
switch (\get_class($constraint)) {
case 'Symfony\Component\Validator\Constraints\NotNull':
case 'Symfony\Component\Validator\Constraints\NotBlank':
case 'Symfony\Component\Validator\Constraints\IsTrue':
return new ValueGuess(true, Guess::HIGH_CONFIDENCE);
}
return null;
}
/**
* Guesses a field's maximum length based on the given constraint.
*
* @return ValueGuess|null
*/
public function guessMaxLengthForConstraint(Constraint $constraint)
{
switch (\get_class($constraint)) {
case 'Symfony\Component\Validator\Constraints\Length':
if (is_numeric($constraint->max)) {
return new ValueGuess($constraint->max, Guess::HIGH_CONFIDENCE);
}
break;
case 'Symfony\Component\Validator\Constraints\Type':
if (\in_array($constraint->type, ['double', 'float', 'numeric', 'real'])) {
return new ValueGuess(null, Guess::MEDIUM_CONFIDENCE);
}
break;
case 'Symfony\Component\Validator\Constraints\Range':
if (is_numeric($constraint->max)) {
return new ValueGuess(\strlen((string) $constraint->max), Guess::LOW_CONFIDENCE);
}
break;
}
return null;
}
/**
* Guesses a field's pattern based on the given constraint.
*
* @return ValueGuess|null
*/
public function guessPatternForConstraint(Constraint $constraint)
{
switch (\get_class($constraint)) {
case 'Symfony\Component\Validator\Constraints\Length':
if (is_numeric($constraint->min)) {
return new ValueGuess(sprintf('.{%s,}', (string) $constraint->min), Guess::LOW_CONFIDENCE);
}
break;
case 'Symfony\Component\Validator\Constraints\Regex':
$htmlPattern = $constraint->getHtmlPattern();
if (null !== $htmlPattern) {
return new ValueGuess($htmlPattern, Guess::HIGH_CONFIDENCE);
}
break;
case 'Symfony\Component\Validator\Constraints\Range':
if (is_numeric($constraint->min)) {
return new ValueGuess(sprintf('.{%s,}', \strlen((string) $constraint->min)), Guess::LOW_CONFIDENCE);
}
break;
case 'Symfony\Component\Validator\Constraints\Type':
if (\in_array($constraint->type, ['double', 'float', 'numeric', 'real'])) {
return new ValueGuess(null, Guess::MEDIUM_CONFIDENCE);
}
break;
}
return null;
}
/**
* Iterates over the constraints of a property, executes a constraints on
* them and returns the best guess.
*
* @param \Closure $closure The closure that returns a guess
* for a given constraint
* @param mixed $defaultValue The default value assumed if no other value
* can be guessed
*
* @return Guess|null
*/
protected function guess(string $class, string $property, \Closure $closure, $defaultValue = null)
{
$guesses = [];
$classMetadata = $this->metadataFactory->getMetadataFor($class);
if ($classMetadata instanceof ClassMetadataInterface && $classMetadata->hasPropertyMetadata($property)) {
foreach ($classMetadata->getPropertyMetadata($property) as $memberMetadata) {
foreach ($memberMetadata->getConstraints() as $constraint) {
if ($guess = $closure($constraint)) {
$guesses[] = $guess;
}
}
}
}
if (null !== $defaultValue) {
$guesses[] = new ValueGuess($defaultValue, Guess::LOW_CONFIDENCE);
}
return Guess::getBestGuess($guesses);
}
}