Class ExistsIn
Checks that the value provided in a field exists as the primary key of another table.
Namespace: Cake\ORM\Rule
Property Summary
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$_fields protected
arrayThe list of fields to check
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$_repository protected
arrayThe repository where the field will be looked for
Method Summary
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__construct() public
Constructor.
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__invoke() public
Performs the existence check
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_fieldsAreNull() protected
Check whether or not the entity fields are nullable and null.
Method Detail
__construct() ¶ public
__construct(string|array $fields, object|string $repository)Constructor.
Parameters
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string|array$fields The field or fields to check existence as primary key.
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object|string$repository The repository where the field will be looked for, or the association name for the repository.
__invoke() ¶ public
__invoke(Cake\Datasource\EntityInterface $entity, array $options): boolPerforms the existence check
Parameters
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Cake\Datasource\EntityInterface$entity The entity from where to extract the fields
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array$options Options passed to the check, where the
repositorykey is required.
Returns
boolThrows
RuntimeExceptionWhen the rule refers to an undefined association.
_fieldsAreNull() ¶ protected
_fieldsAreNull(Cake\Datasource\EntityInterface $entity, Cake\ORM\Table $source): boolCheck whether or not the entity fields are nullable and null.
Parameters
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Cake\Datasource\EntityInterface$entity The entity to check.
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Cake\ORM\Table$source The table to use schema from.
Returns
bool