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<?php |
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/* |
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* This file is part of the awurth/silex-user package. |
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* |
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* (c) Alexis Wurth <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace AWurth\Silex\User\Model; |
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use Doctrine\Common\Persistence\ObjectManager; |
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use Doctrine\Common\Persistence\ObjectRepository; |
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use Symfony\Component\Security\Core\Encoder\BCryptPasswordEncoder; |
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use Symfony\Component\Security\Core\Encoder\EncoderFactoryInterface; |
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class UserManager implements UserManagerInterface |
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{ |
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/** |
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* @var string |
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*/ |
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protected $class; |
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/** |
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* @var EncoderFactoryInterface |
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*/ |
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protected $encoderFactory; |
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/** |
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* @var ObjectManager |
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*/ |
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protected $objectManager; |
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/** |
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* Constructor. |
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* |
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* @param ObjectManager $objectManager |
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* @param EncoderFactoryInterface $encoderFactory |
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* @param string $class |
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*/ |
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public function __construct(ObjectManager $objectManager, EncoderFactoryInterface $encoderFactory, $class) |
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{ |
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$this->objectManager = $objectManager; |
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$this->encoderFactory = $encoderFactory; |
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$this->class = $class; |
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} |
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/** |
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* Gets the Doctrine repository for the User class. |
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* |
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* @return ObjectRepository |
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*/ |
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protected function getRepository() |
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{ |
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return $this->objectManager->getRepository($this->getClass()); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function createUser() |
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{ |
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$class = $this->getClass(); |
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return new $class(); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function deleteUser(UserInterface $user) |
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{ |
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$this->objectManager->remove($user); |
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$this->objectManager->flush(); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function findUserBy(array $criteria) |
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{ |
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return $this->getRepository()->findOneBy($criteria); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function findUserByEmail($email) |
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{ |
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return $this->findUserBy(array('email' => $email)); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function findUserByUsername($username) |
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{ |
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return $this->findUserBy(array('username' => $username)); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function findUserByUsernameOrEmail($usernameOrEmail) |
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{ |
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if (preg_match('/^.+\@\S+\.\S+$/', $usernameOrEmail)) { |
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return $this->findUserByEmail($usernameOrEmail); |
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} |
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return $this->findUserByUsername($usernameOrEmail); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function findUserByConfirmationToken($token) |
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{ |
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return $this->findUserBy(['confirmationToken' => $token]); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function findUsers() |
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{ |
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return $this->getRepository()->findAll(); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getClass() |
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{ |
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return $this->class; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function updatePassword(UserInterface $user) |
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{ |
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$plainPassword = $user->getPlainPassword(); |
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if (0 === strlen($plainPassword)) { |
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return; |
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} |
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$encoder = $this->encoderFactory->getEncoder($user); |
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if ($encoder instanceof BCryptPasswordEncoder) { |
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$user->setSalt(null); |
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} else { |
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$user->setSalt(rtrim(str_replace('+', '.', base64_encode(random_bytes(32))), '=')); |
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} |
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$user->setPassword($encoder->encodePassword($plainPassword, $user->getSalt())); |
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$user->eraseCredentials(); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function updateUser(UserInterface $user, $flush = true) |
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{ |
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$this->updatePassword($user); |
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$this->objectManager->persist($user); |
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if ($flush) { |
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$this->objectManager->flush(); |
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} |
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} |
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} |
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If you return a value from a function or method, it should be a sub-type of the type that is given by the parent type f.e. an interface, or abstract method. This is more formally defined by the Lizkov substitution principle, and guarantees that classes that depend on the parent type can use any instance of a child type interchangably. This principle also belongs to the SOLID principles for object oriented design.
Let’s take a look at an example:
Our function
my_function
expects aPost
object, and outputs the author of the post. The base classPost
returns a simple string and outputting a simple string will work just fine. However, the child classBlogPost
which is a sub-type ofPost
instead decided to return anobject
, and is therefore violating the SOLID principles. If aBlogPost
were passed tomy_function
, PHP would not complain, but ultimately fail when executing thestrtoupper
call in its body.