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<?php namespace Illuminate\Validation\Rules; use Illuminate\Contracts\Support\Arrayable; use Illuminate\Contracts\Validation\Rule; use Illuminate\Contracts\Validation\ValidatorAwareRule; use Illuminate\Support\Arr; use Illuminate\Support\Traits\Conditionable; use TypeError; class Enum implements Rule, ValidatorAwareRule { use Conditionable; /** * The type of the enum. * * @var class-string */ protected $type; /** * The current validator instance. * * @var \Illuminate\Validation\Validator */ protected $validator; /** * The cases that should be considered valid. * * @var array */ protected $only = []; /** * The cases that should be considered invalid. * * @var array */ protected $except = []; /** * Create a new rule instance. * * @param class-string $type * @return void */ public function __construct($type) { $this->type = $type; } /** * Determine if the validation rule passes. * * @param string $attribute * @param mixed $value * @return bool */ public function passes($attribute, $value) { if ($value instanceof $this->type) { return $this->isDesirable($value); } if (is_null($value) || ! enum_exists($this->type) || ! method_exists($this->type, 'tryFrom')) { return false; } try { $value = $this->type::tryFrom($value); return ! is_null($value) && $this->isDesirable($value); } catch (TypeError) { return false; } } /** * Specify the cases that should be considered valid. * * @param \UnitEnum[]|\UnitEnum|\Illuminate\Contracts\Support\Arrayable<array-key, \UnitEnum> $values * @return $this */ public function only($values) { $this->only = $values instanceof Arrayable ? $values->toArray() : Arr::wrap($values); return $this; } /** * Specify the cases that should be considered invalid. * * @param \UnitEnum[]|\UnitEnum|\Illuminate\Contracts\Support\Arrayable<array-key, \UnitEnum> $values * @return $this */ public function except($values) { $this->except = $values instanceof Arrayable ? $values->toArray() : Arr::wrap($values); return $this; } /** * Determine if the given case is a valid case based on the only / except values. * * @param mixed $value * @return bool */ protected function isDesirable($value) { return match (true) { ! empty($this->only) => in_array(needle: $value, haystack: $this->only, strict: true), ! empty($this->except) => ! in_array(needle: $value, haystack: $this->except, strict: true), default => true, }; } /** * Get the validation error message. * * @return array */ public function message() { $message = $this->validator->getTranslator()->get('validation.enum'); return $message === 'validation.enum' ? ['The selected :attribute is invalid.'] : $message; } /** * Set the current validator. * * @param \Illuminate\Validation\Validator $validator * @return $this */ public function setValidator($validator) { $this->validator = $validator; return $this; } }
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