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<?php |
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declare(strict_types=1); |
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namespace Application\Model; |
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use Application\Api\Input\Operator\ExcludeSelfAndDescendantsOperatorType; |
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use Application\Repository\PeriodRepository; |
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use Application\Traits\HasParent; |
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use Application\Traits\HasParentInterface; |
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use Application\Traits\HasSorting; |
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use Application\Traits\HasYearRange; |
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use Doctrine\Common\Collections\ArrayCollection; |
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use Doctrine\Common\Collections\Collection; |
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use Doctrine\Common\Collections\Collection as DoctrineCollection; |
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use Doctrine\ORM\Mapping as ORM; |
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use GraphQL\Doctrine\Attribute as API; |
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/** |
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* An exact period in time with a name and expressed in years. |
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*/ |
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#[API\Filter(field: 'custom', operator: ExcludeSelfAndDescendantsOperatorType::class, type: 'id')] |
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#[ORM\Entity(PeriodRepository::class)] |
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class Period extends Thesaurus implements HasParentInterface |
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{ |
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use HasParent; |
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use HasSorting; |
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use HasYearRange; |
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#[ORM\JoinColumn(onDelete: 'CASCADE')] |
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#[ORM\ManyToOne(targetEntity: self::class, inversedBy: 'children')] |
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private ?self $parent = null; |
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/** |
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* @var Collection<int, Period> |
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*/ |
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#[ORM\OneToMany(targetEntity: self::class, mappedBy: 'parent')] |
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#[ORM\OrderBy(['name' => 'ASC', 'id' => 'ASC'])] |
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private DoctrineCollection $children; |
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public function __construct() |
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{ |
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parent::__construct(); |
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$this->children = new ArrayCollection(); |
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} |
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/** |
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* Get children periods. |
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*/ |
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public function getChildren(): Collection |
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{ |
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return $this->children; |
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} |
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} |
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Let?s assume that you have a directory layout like this:
. |-- OtherDir | |-- Bar.php | `-- Foo.php `-- SomeDir `-- Foo.phpand let?s assume the following content of
Bar.php:If both files
OtherDir/Foo.phpandSomeDir/Foo.phpare loaded in the same runtime, you will see a PHP error such as the following:PHP Fatal error: Cannot use SomeDir\Foo as Foo because the name is already in use in OtherDir/Foo.phpHowever, as
OtherDir/Foo.phpdoes not necessarily have to be loaded and the error is only triggered if it is loaded beforeOtherDir/Bar.php, this problem might go unnoticed for a while. In order to prevent this error from surfacing, you must import the namespace with a different alias: