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<?php |
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/* |
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* Ntentan Framework |
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* Copyright (c) 2008-2017 James Ekow Abaka Ainooson |
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* |
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* Permission is hereby granted, free of charge, to any person obtaining |
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* a copy of this software and associated documentation files (the |
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* "Software"), to deal in the Software without restriction, including |
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* without limitation the rights to use, copy, modify, merge, publish, |
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* distribute, sublicense, and/or sell copies of the Software, and to |
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* permit persons to whom the Software is furnished to do so, subject to |
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* the following conditions: |
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* |
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* The above copyright notice and this permission notice shall be |
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* included in all copies or substantial portions of the Software. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE |
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION |
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION |
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
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* |
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*/ |
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namespace ntentan\utils; |
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/** |
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* Base validator class for validating data in associative arrays. |
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* Validator class allows general validation rules to be defined and used in validating data stored in arbitrary |
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* associative arrays. Rules are defined in an array where different validation types point to the fields in a given |
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* associative array that will be validated. ntentan\utils ships with a set of default validations for length (or size), |
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* regular expressions, numbers and presence (fields that are required). |
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*/ |
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class Validator |
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{ |
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/** |
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* An array which represnts the validation rules. |
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* |
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* @var array |
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*/ |
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private $rules = []; |
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/** |
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* An array which holds the validation errors found after the last |
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* validation was run. |
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* |
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* @var array |
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*/ |
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private $invalidFields = []; |
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/** |
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* An array of loaded validations for this validator. |
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* |
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* @var array |
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*/ |
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private $validations = []; |
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/** |
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* A register of validations that could be used by this validator. |
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* |
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* @var array |
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*/ |
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private $validationRegister = [ |
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'required' => '\ntentan\utils\validator\validations\RequiredValidation', |
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'length' => '\ntentan\utils\validator\validations\LengthValidation', |
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'numeric' => '\ntentan\utils\validator\validations\NumericValidation', |
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'regexp' => '\ntentan\utils\validator\validations\RegexpValidation', |
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]; |
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/** |
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* Custom validation data to be passed on to a validation when instantiated. |
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* |
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* @var mixed |
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*/ |
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private $validationData; |
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/** |
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* Get an instance of a validation class. |
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* |
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* @param string $name |
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* @return validator\Validation |
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* @throws exceptions\ValidatorNotFoundException |
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*/ |
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private function getValidation(string $name): validator\Validation |
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{ |
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if (!isset($this->validations[$name])) { |
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if (isset($this->validationRegister[$name])) { |
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$class = $this->validationRegister[$name]; |
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} else { |
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throw new exceptions\ValidatorNotFoundException("Validator [$name] not found"); |
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} |
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$params = isset($this->validationData[$name]) ? $this->validationData[$name] : null; |
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$this->validations[$name] = new $class($params); |
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} |
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return $this->validations[$name]; |
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} |
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/** |
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* Register a validation type. |
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* |
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* @param string $name The name of the validation to be used in validation descriptions. |
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* @param string $class The name of the validation class to load. |
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* @param mixed $data Any extra validation data that would be necessary for the validation. |
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*/ |
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protected function registerValidation(string $name, string $class, $data = null) |
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{ |
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$this->validationRegister[$name] = $class; |
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$this->validationData[$name] = $data; |
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} |
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/** |
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* Set the validation rules. |
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* |
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* @param array $rules |
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*/ |
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public function setRules(array $rules) |
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{ |
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$this->rules = $rules; |
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} |
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/** |
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* Returns an associative array of all the errors that occurred the last time the validator was run. |
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* |
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* @return array |
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*/ |
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public function getInvalidFields(): array |
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{ |
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return $this->invalidFields; |
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} |
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/** |
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* Build a uniform field info array for various types of validations. |
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* |
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* @param mixed $key |
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* @param mixed $value |
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* @return array |
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*/ |
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private function getFieldInfo($key, $value): array |
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{ |
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$name = null; |
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$options = []; |
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if (is_numeric($key) && is_string($value)) { |
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$name = $value; |
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} else if (is_numeric($key) && is_array($value)) { |
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$name = array_shift($value); |
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$options = $value; |
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} else if (is_string($key)) { |
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$name = $key; |
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$options = $value; |
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} |
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return ['name' => $name, 'options' => $options]; |
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} |
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/** |
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* Return the validation rules in this validator. |
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* |
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* @return array |
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*/ |
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public function getRules() : array |
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{ |
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return $this->rules; |
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} |
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/** |
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* Validate data according to validation rules that have been set into |
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* this validator. |
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* |
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* @param array $data The data to be validated |
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* @return bool |
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* @throws exceptions\ValidatorNotFoundException |
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*/ |
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public function validate(array $data) : bool |
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{ |
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$passed = true; |
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$this->invalidFields = []; |
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$rules = $this->getRules(); |
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foreach ($rules as $validation => $fields) { |
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foreach ($fields as $key => $value) { |
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$field = $this->getFieldInfo($key, $value); |
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$validationInstance = $this->getValidation($validation); |
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$validationStatus = $validationInstance->run($field, $data); |
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$passed = $passed && $validationStatus; |
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$this->invalidFields = array_merge_recursive( |
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$this->invalidFields, $validationInstance->getMessages() |
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); |
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} |
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} |
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return $passed; |
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} |
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} |
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