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<?php |
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namespace Cube\SilverStripe\Validation; |
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use Exception; |
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use SilverStripe\Core\ClassInfo; |
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use Cube\SilverStripe\Validation\Interfaces\Rule; |
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/** |
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* Class ValidationRules |
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* @package Cube\SilverStripe\Validation |
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*/ |
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class ValidationRules |
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{ |
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/** |
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* @var |
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*/ |
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private $validationMethod; |
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/** |
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* @param string $rule |
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* @return static |
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* @throws Exception |
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*/ |
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public static function get(string $rule) |
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{ |
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$rules = new static(); |
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$rules->setValidationMethod($rule); |
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return $rules; |
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} |
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/** |
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* @param string $rule |
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* @throws Exception |
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*/ |
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private function setValidationMethod(string $rule) |
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{ |
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$method = 'validate' . ucfirst($rule); |
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$break = strpos($rule, '_'); |
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if ($break) { |
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$method = 'validate'.ucfirst(substr($rule, 0, $break)) . ucfirst(substr($rule, $break + 1)); |
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} |
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if (method_exists($this, $method)) { |
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$this->validationMethod = $method; |
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} elseif ($customRule = $this->getCustomValidationRule($rule)) { |
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$this->validationMethod = $customRule; |
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} else { |
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// This rule does not exist |
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throw new Exception("The validation rule '{$rule}' does not exist."); |
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} |
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} |
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/** |
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* @param string $rule |
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* @return bool|mixed |
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* @throws Exception |
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*/ |
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private function getCustomValidationRule(string $rule) |
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{ |
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foreach (ClassInfo::implementorsOf(Rule::class) as $class) { |
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$properties = get_class_vars($class); |
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if (isset($properties['name']) && $rule === $properties['name']) { |
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return new $class(); |
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} |
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} |
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return false; |
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} |
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/** |
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* @param $value |
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* @param array $arguments |
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* @return false |
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*/ |
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public function passes($value, array $arguments = []) |
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{ |
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if (is_object($this->validationMethod)) { |
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return $this->validationMethod->passes($value); |
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} |
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if (count($arguments) > 0) { |
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return $this->{$this->validationMethod}($value, $arguments); |
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} |
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return $this->{$this->validationMethod}($value); |
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} |
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/** |
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* @param $str |
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* @return false|int |
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*/ |
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private function strLength($str = '') |
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{ |
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if (!is_string($str)) { |
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return false; |
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} |
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return strlen($str); |
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} |
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/** |
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* @param $value |
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* @return bool |
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*/ |
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protected function validateRequired($value) |
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{ |
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return $value !== null |
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&& !empty($value) |
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|| (is_array($value) && count($value) > 0); |
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} |
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/** |
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* @param $value |
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* @param $arguments |
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* @return bool |
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*/ |
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protected function validateMin($value, $arguments) |
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{ |
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if (!is_numeric($value) || is_string($value)) { |
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return false; |
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} else { |
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return $arguments[0] <= $value; |
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} |
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} |
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/** |
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* @param $value |
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* @param $arguments |
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* @return bool |
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*/ |
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protected function validateMinLength($value, $arguments) |
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{ |
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$length = $this->strLength($value); |
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return ($length !== false) && $length >= (int) $arguments[0]; |
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} |
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/** |
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* @param $value |
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* @param $arguments |
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* @return bool |
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*/ |
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protected function validateMax($value, $arguments) |
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{ |
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if (!is_numeric($value) || is_string($value)) { |
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return false; |
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} else { |
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return $arguments[0] >= $value; |
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} |
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} |
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/** |
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* @param $value |
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* @param $arguments |
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* @return bool |
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*/ |
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protected function validateMaxLength($value, $arguments) |
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{ |
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$length = $this->strLength($value); |
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return ($length !== false) && $length <= (int) $arguments[0]; |
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} |
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/** |
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* @param $value |
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* @param $arguments |
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* @return false|int |
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*/ |
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protected function validateRegex($value, $arguments) |
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{ |
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return preg_match($arguments[0], $value); |
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} |
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/** |
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* @param $value |
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* @return bool |
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*/ |
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protected function validateEmail($value) |
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{ |
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return filter_var($value, FILTER_VALIDATE_EMAIL); |
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} |
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} |
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cubenl /
silverstripe-validation
