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<?php |
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declare(strict_types=1); |
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namespace Yiisoft\Validator; |
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/** |
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* Rule represents a single value validation rule. |
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*/ |
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abstract class Rule implements RuleInterface, ParametrizedRuleInterface, FormattableRuleInterface |
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{ |
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private ?FormatterInterface $formatter = null; |
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private bool $skipOnEmpty = false; |
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private bool $skipOnError = true; |
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/** |
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* @var callable|null |
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*/ |
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private $when = null; |
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/** |
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* Validates the value |
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* |
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* @param mixed $value value to be validated |
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* @param DataSetInterface|null $dataSet optional data set that could be used for contextual validation |
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* @param bool $previousRulesErrored set to true if rule is part of a group of rules and one of the previous validations failed |
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* |
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* @return Result |
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*/ |
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final public function validate($value, DataSetInterface $dataSet = null, bool $previousRulesErrored = false): Result |
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{ |
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if ($this->skipOnEmpty && $this->isEmpty($value)) { |
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return new Result(); |
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} |
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if ( |
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($this->skipOnError && $previousRulesErrored) || |
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(is_callable($this->when) && !($this->when)($value, $dataSet)) |
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) { |
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return new Result(); |
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} |
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return $this->validateValue($value, $dataSet); |
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} |
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/** |
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* Validates the value. The method should be implemented by concrete validation rules. |
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* |
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* @param mixed $value value to be validated |
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* @param DataSetInterface|null $dataSet optional data set that could be used for contextual validation |
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* |
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* @return Result |
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*/ |
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abstract protected function validateValue($value, DataSetInterface $dataSet = null): Result; |
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public function withFormatter(?FormatterInterface $formatter): self |
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{ |
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$new = clone $this; |
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$new->formatter = $formatter; |
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return $new; |
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} |
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protected function formatMessage(string $message, array $parameters = []): string |
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{ |
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if ($this->formatter === null) { |
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$this->formatter = new Formatter(); |
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} |
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return $this->formatter->format( |
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$message, |
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$parameters |
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); |
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} |
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/** |
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* Add a PHP callable whose return value determines whether this rule should be applied. |
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* By default rule will be always applied. |
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* |
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* The signature of the callable should be `function ($value, DataSetInterface $dataSet): bool`, where $value and $dataSet |
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* refer to the value validated and the data set in which context it is validated. The callable should return |
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* a boolean value. |
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* |
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* The following example will enable the validator only when the country currently selected is USA: |
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* |
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* ```php |
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* function ($value, DataSetInterface $dataSet) { |
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return $dataSet->getAttributeValue('country') === Country::USA; |
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} |
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* ``` |
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* |
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* @param callable $callback |
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* |
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* @return $this |
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*/ |
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public function when(callable $callback): self |
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{ |
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$new = clone $this; |
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$new->when = $callback; |
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return $new; |
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} |
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public function skipOnError(bool $value): self |
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{ |
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$new = clone $this; |
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$new->skipOnError = $value; |
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return $new; |
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} |
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/** |
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* @param bool $value if validation should be skipped if value validated is empty |
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* |
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* @return self |
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*/ |
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public function skipOnEmpty(bool $value): self |
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{ |
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$new = clone $this; |
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$new->skipOnEmpty = $value; |
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return $new; |
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} |
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/** |
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* Checks if the given value is empty. |
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* A value is considered empty if it is null, an empty array, or an empty string. |
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* Note that this method is different from PHP empty(). It will return false when the value is 0. |
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* |
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* @param mixed $value the value to be checked |
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* |
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* @return bool whether the value is empty |
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*/ |
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protected function isEmpty($value): bool |
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{ |
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return $value === null || $value === [] || $value === ''; |
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} |
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/** |
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* Get name of the rule to be used when rule is converted to array. |
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* By default it returns base name of the class, first letter in lowercase. |
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* |
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* @return string |
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*/ |
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public function getName(): string |
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{ |
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$className = static::class; |
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return lcfirst(substr($className, strrpos($className, '\\') + 1)); |
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} |
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/** |
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* Returns rule options as array. |
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* |
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* @return array |
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*/ |
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public function getOptions(): array |
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{ |
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return [ |
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'skipOnEmpty' => $this->skipOnEmpty, |
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'skipOnError' => $this->skipOnError, |
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]; |
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} |
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} |
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yiisoft /
validator
This check looks for calls to methods that do not seem to exist on a given type. It looks for the method on the type itself as well as in inherited classes or implemented interfaces.
This is most likely a typographical error or the method has been renamed.