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<?php |
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namespace Albert221\Validation; |
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use Albert221\Validation\Rule\RuleInterface; |
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class Validator |
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{ |
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protected $rules = []; |
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protected $fields = []; |
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protected $errors = []; |
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protected $validated = false; |
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/** |
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* Adds field with its value to be validated later. |
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* |
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* @param string $name |
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* @param mixed $value |
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*/ |
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public function addField($name, $value) |
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{ |
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if (! is_string($name)) { |
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throw new \InvalidArgumentException( |
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sprintf('Field name should be of string type, %s given.', gettype($name)) |
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); |
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} |
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if ($this->issetField($name)) { |
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throw new \InvalidArgumentException(sprintf('Field \'%s\' has been already added.', $name)); |
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} |
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$this->fields[$name] = $value; |
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} |
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/** |
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* Returns if field is already added. |
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* |
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* @param string $name |
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* @return bool |
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*/ |
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public function issetField($name) |
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{ |
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return isset($this->fields[$name]); |
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} |
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/** |
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* Adds validation rule to field with passed name. |
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* |
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* @param string $fieldName |
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* @param RuleInterface $rule |
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* @return RuleInterface |
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*/ |
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public function addRule($fieldName, RuleInterface $rule) |
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{ |
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if (! $this->issetField($fieldName)) { |
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throw new \InvalidArgumentException( |
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sprintf('Field \'%s\' does not exist and hence you cannot add rule to it', $fieldName) |
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); |
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} |
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$this->rules[$fieldName][] = $rule; |
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return $rule; |
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} |
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/** |
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* Returns count of validation errors. |
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* |
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* @return int |
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*/ |
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public function getErrorsCount() |
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{ |
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// Count recursively items of $errors array and subtract count of items in $errors to get subarray items count. |
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$keysCount = count($this->getErrors()); |
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$count = count($this->getErrors(), COUNT_RECURSIVE); |
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return $count - $keysCount; |
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} |
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/** |
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* Returns associative array of field name => error messages pairs. |
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* |
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* @return array |
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*/ |
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public function getErrors() |
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{ |
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return $this->errors; |
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} |
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/** |
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* Validates fields using validation rules |
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* |
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* @return $this |
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*/ |
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public function validate() |
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{ |
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if ($this->validated) { |
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return $this; |
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} |
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foreach ($this->fields as $field => $value) { |
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/** @var RuleInterface $rule */ |
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foreach ($this->rules[$field] as $rule) { |
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if ($rule->test($value)) { |
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continue; |
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} |
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$this->errors[$field][] = $rule->getMessage(); |
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} |
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} |
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$this->validated = true; |
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return $this; |
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} |
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/** |
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* Clone validator with fields and rules but without validation errors. |
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*/ |
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public function __clone() |
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{ |
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$this->validated = false; |
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$this->errors = []; |
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} |
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} |
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Albert221 /
validation
