/
UniqueEntityValidator.php
117 lines (97 loc) · 3.91 KB
/
UniqueEntityValidator.php
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
<?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\Bridge\Doctrine\Validator\Constraints;
use Doctrine\Common\Persistence\ManagerRegistry;
use Symfony\Component\Validator\Constraint;
use Symfony\Component\Validator\Exception\UnexpectedTypeException;
use Symfony\Component\Validator\Exception\ConstraintDefinitionException;
use Symfony\Component\Validator\ConstraintValidator;
/**
* Unique Entity Validator checks if one or a set of fields contain unique values.
*
* @author Benjamin Eberlei <kontakt@beberlei.de>
*/
class UniqueEntityValidator extends ConstraintValidator
{
/**
* @var ManagerRegistry
*/
private $registry;
/**
* @param ManagerRegistry $registry
*/
public function __construct(ManagerRegistry $registry)
{
$this->registry = $registry;
}
/**
* @param object $entity
* @param Constraint $constraint
*
* @return bool
*/
public function isValid($entity, Constraint $constraint)
{
if (!is_array($constraint->fields) && !is_string($constraint->fields)) {
throw new UnexpectedTypeException($constraint->fields, 'array');
}
$fields = (array) $constraint->fields;
if (0 === count($fields)) {
throw new ConstraintDefinitionException('At least one field has to be specified.');
}
if ($constraint->em) {
$em = $this->registry->getManager($constraint->em);
} else {
$em = $this->registry->getManagerForClass(get_class($entity));
}
$className = $this->context->getCurrentClass();
$class = $em->getClassMetadata($className);
/* @var $class \Doctrine\Common\Persistence\Mapping\ClassMetadata */
$criteria = array();
foreach ($fields as $fieldName) {
if (!$class->hasField($fieldName) && !$class->hasAssociation($fieldName)) {
throw new ConstraintDefinitionException("Only field names mapped by Doctrine can be validated for uniqueness.");
}
$criteria[$fieldName] = $class->reflFields[$fieldName]->getValue($entity);
if (null === $criteria[$fieldName]) {
return true;
}
if ($class->hasAssociation($fieldName)) {
$relatedClass = $em->getClassMetadata($class->getAssociationTargetClass($fieldName));
$relatedId = $relatedClass->getIdentifierValues($criteria[$fieldName]);
if (count($relatedId) > 1) {
throw new ConstraintDefinitionException(
"Associated entities are not allowed to have more than one identifier field to be " .
"part of a unique constraint in: " . $class->getName() . "#" . $fieldName
);
}
$criteria[$fieldName] = array_pop($relatedId);
}
}
$repository = $em->getRepository($className);
$result = $repository->findBy($criteria);
/* If the result is a MongoCursor, it must be advanced to the first
* element. Rewinding should have no ill effect if $result is another
* iterator implementation.
*/
if ($result instanceof \Iterator) {
$result->rewind();
}
/* If no entity matched the query criteria or a single entity matched,
* which is the same as the entity being validated, the criteria is
* unique.
*/
if (0 === count($result) || (1 === count($result) && $entity === current($result))) {
return true;
}
$this->context->addViolationAtSubPath($fields[0], $constraint->message, array(), $criteria[$fields[0]]);
return true; // all true, we added the violation already!
}
}