[Validator] Implemented Language constraint
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src/Symfony/Component/Validator/Constraints/Language.php
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src/Symfony/Component/Validator/Constraints/Language.php
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<?php
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namespace Symfony\Component\Validator\Constraints;
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/*
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* This file is part of the Symfony framework.
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*
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* (c) Fabien Potencier <fabien.potencier@symfony-project.com>
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*
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* This source file is subject to the MIT license that is bundled
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* with this source code in the file LICENSE.
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*/
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class Language extends \Symfony\Component\Validator\Constraint
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{
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public $message = 'This value is not a valid language';
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}
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<?php
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namespace Symfony\Component\Validator\Constraints;
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/*
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* This file is part of the Symfony framework.
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*
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* (c) Fabien Potencier <fabien.potencier@symfony-project.com>
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*
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* This source file is subject to the MIT license that is bundled
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* with this source code in the file LICENSE.
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*/
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use Symfony\Component\Validator\Constraint;
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use Symfony\Component\Validator\ConstraintValidator;
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use Symfony\Component\Validator\Exception\UnexpectedTypeException;
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use Symfony\Component\Locale\Locale;
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/**
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* Validates whether a value is a valid language code
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*
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* @author Bernhard Schussek <bernhard.schussek@symfony-project.com>
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*/
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class LanguageValidator extends ConstraintValidator
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{
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public function isValid($value, Constraint $constraint)
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{
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if ($value === null || $value === '') {
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return true;
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}
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if (!is_scalar($value) && !(is_object($value) && method_exists($value, '__toString()'))) {
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throw new UnexpectedTypeException($value, 'string');
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}
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$value = (string)$value;
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if (!in_array($value, Locale::getLanguages())) {
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$this->setMessage($constraint->message, array('{{ value }}' => $value));
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return false;
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}
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return true;
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}
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}
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<?php
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namespace Symfony\Tests\Component\Validator;
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use Symfony\Component\Validator\Constraints\Language;
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use Symfony\Component\Validator\Constraints\LanguageValidator;
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class LanguageValidatorTest extends \PHPUnit_Framework_TestCase
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{
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protected $validator;
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protected function setUp()
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{
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$this->validator = new LanguageValidator();
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}
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public function testNullIsValid()
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{
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$this->assertTrue($this->validator->isValid(null, new Language()));
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}
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public function testEmptyStringIsValid()
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{
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$this->assertTrue($this->validator->isValid('', new Language()));
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}
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public function testExpectsStringCompatibleType()
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{
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$this->setExpectedException('Symfony\Component\Validator\Exception\UnexpectedTypeException');
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$this->validator->isValid(new \stdClass(), new Language());
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}
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/**
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* @dataProvider getValidLanguages
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*/
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public function testValidLanguages($date)
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{
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$this->assertTrue($this->validator->isValid($date, new Language()));
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}
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public function getValidLanguages()
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{
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return array(
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array('en'),
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array('en_US'),
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array('my'),
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);
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}
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/**
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* @dataProvider getInvalidLanguages
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*/
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public function testInvalidLanguages($date)
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{
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$this->assertFalse($this->validator->isValid($date, new Language()));
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}
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public function getInvalidLanguages()
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{
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return array(
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array('EN'),
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array('foobar'),
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);
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}
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public function testMessageIsSet()
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{
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$constraint = new Language(array(
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'message' => 'myMessage'
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));
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$this->assertFalse($this->validator->isValid('foobar', $constraint));
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$this->assertEquals($this->validator->getMessageTemplate(), 'myMessage');
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$this->assertEquals($this->validator->getMessageParameters(), array(
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'{{ value }}' => 'foobar',
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));
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}
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}
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