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Markus
748
system/Validation/Validation.php
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748
system/Validation/Validation.php
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<?php
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/**
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* This file is part of CodeIgniter 4 framework.
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*
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* (c) CodeIgniter Foundation <admin@codeigniter.com>
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*
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* For the full copyright and license information, please view
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* the LICENSE file that was distributed with this source code.
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*/
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namespace CodeIgniter\Validation;
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use CodeIgniter\HTTP\IncomingRequest;
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use CodeIgniter\HTTP\RequestInterface;
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use CodeIgniter\Validation\Exceptions\ValidationException;
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use CodeIgniter\View\RendererInterface;
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use Config\Validation as ValidationConfig;
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use InvalidArgumentException;
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/**
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* Validator
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*/
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class Validation implements ValidationInterface
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{
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/**
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* Files to load with validation functions.
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*
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* @var array
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*/
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protected $ruleSetFiles;
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/**
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* The loaded instances of our validation files.
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*
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* @var array
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*/
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protected $ruleSetInstances = [];
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/**
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* Stores the actual rules that should
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* be ran against $data.
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*
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* @var array
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*/
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protected $rules = [];
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/**
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* The data that should be validated,
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* where 'key' is the alias, with value.
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*
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* @var array
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*/
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protected $data = [];
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/**
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* Any generated errors during validation.
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* 'key' is the alias, 'value' is the message.
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*
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* @var array
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*/
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protected $errors = [];
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/**
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* Stores custom error message to use
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* during validation. Where 'key' is the alias.
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*
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* @var array
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*/
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protected $customErrors = [];
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/**
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* Our configuration.
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*
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* @var ValidationConfig
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*/
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protected $config;
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/**
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* The view renderer used to render validation messages.
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*
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* @var RendererInterface
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*/
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protected $view;
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/**
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* Validation constructor.
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*
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* @param ValidationConfig $config
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*/
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public function __construct($config, RendererInterface $view)
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{
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$this->ruleSetFiles = $config->ruleSets;
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$this->config = $config;
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$this->view = $view;
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}
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/**
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* Runs the validation process, returning true/false determining whether
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* validation was successful or not.
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*
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* @param array|null $data The array of data to validate.
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* @param string|null $group The predefined group of rules to apply.
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* @param string|null $dbGroup The database group to use.
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*/
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public function run(?array $data = null, ?string $group = null, ?string $dbGroup = null): bool
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{
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$data = $data ?? $this->data;
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// i.e. is_unique
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$data['DBGroup'] = $dbGroup;
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$this->loadRuleSets();
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$this->loadRuleGroup($group);
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// If no rules exist, we return false to ensure
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// the developer didn't forget to set the rules.
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if (empty($this->rules)) {
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return false;
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}
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// Replace any placeholders (e.g. {id}) in the rules with
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// the value found in $data, if any.
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$this->rules = $this->fillPlaceholders($this->rules, $data);
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// Need this for searching arrays in validation.
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helper('array');
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// Run through each rule. If we have any field set for
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// this rule, then we need to run them through!
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foreach ($this->rules as $field => $setup) {
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// Blast $rSetup apart, unless it's already an array.
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$rules = $setup['rules'] ?? $setup;
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if (is_string($rules)) {
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$rules = $this->splitRules($rules);
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}
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$values = dot_array_search($field, $data);
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if ($values === []) {
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// We'll process the values right away if an empty array
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$this->processRules($field, $setup['label'] ?? $field, $values, $rules, $data);
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continue;
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}
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if (strpos($field, '*') !== false && is_array($values)) {
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// Process multiple fields
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foreach ($values as $value) {
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$this->processRules($field, $setup['label'] ?? $field, $value, $rules, $data);
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}
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} else {
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// Process single field
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$this->processRules($field, $setup['label'] ?? $field, $values, $rules, $data);
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}
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}
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return $this->getErrors() === [];
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}
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/**
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* Runs the validation process, returning true or false
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* determining whether validation was successful or not.
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*
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* @param mixed $value
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* @param string[] $errors
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*/
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public function check($value, string $rule, array $errors = []): bool
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{
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$this->reset();
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return $this->setRule('check', null, $rule, $errors)->run(['check' => $value]);
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}
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/**
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* Runs all of $rules against $field, until one fails, or
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* all of them have been processed. If one fails, it adds
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* the error to $this->errors and moves on to the next,
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* so that we can collect all of the first errors.
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*
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* @param array|string $value
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* @param array|null $rules
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* @param array $data
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*/
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protected function processRules(string $field, ?string $label, $value, $rules = null, ?array $data = null): bool
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{
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if ($data === null) {
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throw new InvalidArgumentException('You must supply the parameter: data.');
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}
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if (in_array('if_exist', $rules, true)) {
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$flattenedData = array_flatten_with_dots($data);
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$ifExistField = $field;
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if (strpos($field, '.*') !== false) {
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// We'll change the dot notation into a PCRE pattern
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// that can be used later
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$ifExistField = str_replace('\.\*', '\.(?:[^\.]+)', preg_quote($field, '/'));
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$dataIsExisting = array_reduce(
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array_keys($flattenedData),
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static function ($carry, $item) use ($ifExistField) {
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$pattern = sprintf('/%s/u', $ifExistField);
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return $carry || preg_match($pattern, $item) === 1;
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},
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false
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);
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} else {
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$dataIsExisting = array_key_exists($ifExistField, $flattenedData);
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}
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unset($ifExistField, $flattenedData);
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if (! $dataIsExisting) {
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// we return early if `if_exist` is not satisfied. we have nothing to do here.
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return true;
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}
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// Otherwise remove the if_exist rule and continue the process
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$rules = array_diff($rules, ['if_exist']);
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}
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if (in_array('permit_empty', $rules, true)) {
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if (
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! in_array('required', $rules, true)
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&& (is_array($value) ? $value === [] : trim((string) $value) === '')
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) {
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$passed = true;
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foreach ($rules as $rule) {
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if (preg_match('/(.*?)\[(.*)\]/', $rule, $match)) {
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$rule = $match[1];
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$param = $match[2];
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if (! in_array($rule, ['required_with', 'required_without'], true)) {
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continue;
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}
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// Check in our rulesets
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foreach ($this->ruleSetInstances as $set) {
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if (! method_exists($set, $rule)) {
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continue;
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}
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$passed = $passed && $set->{$rule}($value, $param, $data);
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break;
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}
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}
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}
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if ($passed === true) {
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return true;
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}
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}
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$rules = array_diff($rules, ['permit_empty']);
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}
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foreach ($rules as $rule) {
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$isCallable = is_callable($rule);
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$passed = false;
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$param = false;
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if (! $isCallable && preg_match('/(.*?)\[(.*)\]/', $rule, $match)) {
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$rule = $match[1];
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$param = $match[2];
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}
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// Placeholder for custom errors from the rules.
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$error = null;
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// If it's a callable, call and get out of here.
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if ($isCallable) {
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$passed = $param === false ? $rule($value) : $rule($value, $param, $data);
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} else {
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$found = false;
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// Check in our rulesets
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foreach ($this->ruleSetInstances as $set) {
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if (! method_exists($set, $rule)) {
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continue;
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}
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$found = true;
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$passed = $param === false
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? $set->{$rule}($value, $error)
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: $set->{$rule}($value, $param, $data, $error);
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break;
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}
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// If the rule wasn't found anywhere, we
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// should throw an exception so the developer can find it.
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if (! $found) {
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throw ValidationException::forRuleNotFound($rule);
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}
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}
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// Set the error message if we didn't survive.
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if ($passed === false) {
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// if the $value is an array, convert it to as string representation
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if (is_array($value)) {
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$value = '[' . implode(', ', $value) . ']';
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} elseif (is_object($value)) {
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$value = json_encode($value);
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}
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$param = ($param === false) ? '' : $param;
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$this->errors[$field] = $error ?? $this->getErrorMessage(
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$rule,
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$field,
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$label,
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$param,
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(string) $value
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);
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return false;
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}
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}
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return true;
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}
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/**
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* Takes a Request object and grabs the input data to use from its
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* array values.
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*
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* @param IncomingRequest|RequestInterface $request
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*/
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public function withRequest(RequestInterface $request): ValidationInterface
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{
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/** @var IncomingRequest $request */
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if (strpos($request->getHeaderLine('Content-Type'), 'application/json') !== false) {
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$this->data = $request->getJSON(true);
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return $this;
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}
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if (in_array($request->getMethod(), ['put', 'patch', 'delete'], true)
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&& strpos($request->getHeaderLine('Content-Type'), 'multipart/form-data') === false
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) {
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$this->data = $request->getRawInput();
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} else {
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$this->data = $request->getVar() ?? [];
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}
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return $this;
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}
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/**
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* Sets an individual rule and custom error messages for a single field.
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*
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* The custom error message should be just the messages that apply to
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* this field, like so:
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*
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* [
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* 'rule' => 'message',
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* 'rule' => 'message'
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* ]
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*
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* @return $this
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*/
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public function setRule(string $field, ?string $label, string $rules, array $errors = [])
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{
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$this->rules[$field] = [
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'label' => $label,
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'rules' => $rules,
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];
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$this->customErrors = array_merge($this->customErrors, [
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$field => $errors,
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]);
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return $this;
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}
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/**
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* Stores the rules that should be used to validate the items.
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* Rules should be an array formatted like:
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*
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* [
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* 'field' => 'rule1|rule2'
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* ]
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*
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* The $errors array should be formatted like:
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* [
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* 'field' => [
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* 'rule' => 'message',
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* 'rule' => 'message
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* ],
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* ]
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*
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* @param array $errors // An array of custom error messages
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*/
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public function setRules(array $rules, array $errors = []): ValidationInterface
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{
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$this->customErrors = $errors;
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foreach ($rules as $field => &$rule) {
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if (! is_array($rule)) {
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continue;
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}
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if (! array_key_exists('errors', $rule)) {
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continue;
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}
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$this->customErrors[$field] = $rule['errors'];
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unset($rule['errors']);
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}
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$this->rules = $rules;
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return $this;
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}
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/**
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* Returns all of the rules currently defined.
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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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||||
/**
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* Checks to see if the rule for key $field has been set or not.
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||||
*/
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||||
public function hasRule(string $field): bool
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||||
{
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||||
return array_key_exists($field, $this->rules);
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||||
}
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|
||||
/**
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||||
* Get rule group.
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||||
*
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||||
* @param string $group Group.
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||||
*
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||||
* @throws InvalidArgumentException If group not found.
|
||||
*
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||||
* @return string[] Rule group.
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||||
*/
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||||
public function getRuleGroup(string $group): array
|
||||
{
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||||
if (! isset($this->config->{$group})) {
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throw ValidationException::forGroupNotFound($group);
|
||||
}
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||||
|
||||
if (! is_array($this->config->{$group})) {
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||||
throw ValidationException::forGroupNotArray($group);
|
||||
}
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||||
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||||
return $this->config->{$group};
|
||||
}
|
||||
|
||||
/**
|
||||
* Set rule group.
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||||
*
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||||
* @param string $group Group.
|
||||
*
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||||
* @throws InvalidArgumentException If group not found.
|
||||
*/
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||||
public function setRuleGroup(string $group)
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||||
{
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||||
$rules = $this->getRuleGroup($group);
|
||||
$this->setRules($rules);
|
||||
|
||||
$errorName = $group . '_errors';
|
||||
if (isset($this->config->{$errorName})) {
|
||||
$this->customErrors = $this->config->{$errorName};
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the rendered HTML of the errors as defined in $template.
|
||||
*/
|
||||
public function listErrors(string $template = 'list'): string
|
||||
{
|
||||
if (! array_key_exists($template, $this->config->templates)) {
|
||||
throw ValidationException::forInvalidTemplate($template);
|
||||
}
|
||||
|
||||
return $this->view
|
||||
->setVar('errors', $this->getErrors())
|
||||
->render($this->config->templates[$template]);
|
||||
}
|
||||
|
||||
/**
|
||||
* Displays a single error in formatted HTML as defined in the $template view.
|
||||
*/
|
||||
public function showError(string $field, string $template = 'single'): string
|
||||
{
|
||||
if (! array_key_exists($field, $this->getErrors())) {
|
||||
return '';
|
||||
}
|
||||
|
||||
if (! array_key_exists($template, $this->config->templates)) {
|
||||
throw ValidationException::forInvalidTemplate($template);
|
||||
}
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||||
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||||
return $this->view
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->setVar('error', $this->getError($field))
|
||||
->render($this->config->templates[$template]);
|
||||
}
|
||||
|
||||
/**
|
||||
* Loads all of the rulesets classes that have been defined in the
|
||||
* Config\Validation and stores them locally so we can use them.
|
||||
*/
|
||||
protected function loadRuleSets()
|
||||
{
|
||||
if (empty($this->ruleSetFiles)) {
|
||||
throw ValidationException::forNoRuleSets();
|
||||
}
|
||||
|
||||
foreach ($this->ruleSetFiles as $file) {
|
||||
$this->ruleSetInstances[] = new $file();
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Loads custom rule groups (if set) into the current rules.
|
||||
*
|
||||
* Rules can be pre-defined in Config\Validation and can
|
||||
* be any name, but must all still be an array of the
|
||||
* same format used with setRules(). Additionally, check
|
||||
* for {group}_errors for an array of custom error messages.
|
||||
*
|
||||
* @return array|ValidationException|null
|
||||
*/
|
||||
public function loadRuleGroup(?string $group = null)
|
||||
{
|
||||
if (empty($group)) {
|
||||
return null;
|
||||
}
|
||||
|
||||
if (! isset($this->config->{$group})) {
|
||||
throw ValidationException::forGroupNotFound($group);
|
||||
}
|
||||
|
||||
if (! is_array($this->config->{$group})) {
|
||||
throw ValidationException::forGroupNotArray($group);
|
||||
}
|
||||
|
||||
$this->setRules($this->config->{$group});
|
||||
|
||||
// If {group}_errors exists in the config file,
|
||||
// then override our custom errors with them.
|
||||
$errorName = $group . '_errors';
|
||||
|
||||
if (isset($this->config->{$errorName})) {
|
||||
$this->customErrors = $this->config->{$errorName};
|
||||
}
|
||||
|
||||
return $this->rules;
|
||||
}
|
||||
|
||||
/**
|
||||
* Replace any placeholders within the rules with the values that
|
||||
* match the 'key' of any properties being set. For example, if
|
||||
* we had the following $data array:
|
||||
*
|
||||
* [ 'id' => 13 ]
|
||||
*
|
||||
* and the following rule:
|
||||
*
|
||||
* 'required|is_unique[users,email,id,{id}]'
|
||||
*
|
||||
* The value of {id} would be replaced with the actual id in the form data:
|
||||
*
|
||||
* 'required|is_unique[users,email,id,13]'
|
||||
*/
|
||||
protected function fillPlaceholders(array $rules, array $data): array
|
||||
{
|
||||
$replacements = [];
|
||||
|
||||
foreach ($data as $key => $value) {
|
||||
$replacements["{{$key}}"] = $value;
|
||||
}
|
||||
|
||||
if (! empty($replacements)) {
|
||||
foreach ($rules as &$rule) {
|
||||
if (is_array($rule)) {
|
||||
foreach ($rule as &$row) {
|
||||
// Should only be an `errors` array
|
||||
// which doesn't take placeholders.
|
||||
if (is_array($row)) {
|
||||
continue;
|
||||
}
|
||||
|
||||
$row = strtr($row ?? '', $replacements);
|
||||
}
|
||||
|
||||
continue;
|
||||
}
|
||||
|
||||
$rule = strtr($rule ?? '', $replacements);
|
||||
}
|
||||
}
|
||||
|
||||
return $rules;
|
||||
}
|
||||
|
||||
/**
|
||||
* Checks to see if an error exists for the given field.
|
||||
*/
|
||||
public function hasError(string $field): bool
|
||||
{
|
||||
return array_key_exists($field, $this->getErrors());
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the error(s) for a specified $field (or empty string if not
|
||||
* set).
|
||||
*/
|
||||
public function getError(?string $field = null): string
|
||||
{
|
||||
if ($field === null && count($this->rules) === 1) {
|
||||
$field = array_key_first($this->rules);
|
||||
}
|
||||
|
||||
return array_key_exists($field, $this->getErrors()) ? $this->errors[$field] : '';
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the array of errors that were encountered during
|
||||
* a run() call. The array should be in the following format:
|
||||
*
|
||||
* [
|
||||
* 'field1' => 'error message',
|
||||
* 'field2' => 'error message',
|
||||
* ]
|
||||
*
|
||||
* @return array<string, string>
|
||||
*
|
||||
* @codeCoverageIgnore
|
||||
*/
|
||||
public function getErrors(): array
|
||||
{
|
||||
// If we already have errors, we'll use those.
|
||||
// If we don't, check the session to see if any were
|
||||
// passed along from a redirect_with_input request.
|
||||
if (empty($this->errors) && ! is_cli() && isset($_SESSION, $_SESSION['_ci_validation_errors'])) {
|
||||
$this->errors = unserialize($_SESSION['_ci_validation_errors']);
|
||||
}
|
||||
|
||||
return $this->errors ?? [];
|
||||
}
|
||||
|
||||
/**
|
||||
* Sets the error for a specific field. Used by custom validation methods.
|
||||
*/
|
||||
public function setError(string $field, string $error): ValidationInterface
|
||||
{
|
||||
$this->errors[$field] = $error;
|
||||
|
||||
return $this;
|
||||
}
|
||||
|
||||
/**
|
||||
* Attempts to find the appropriate error message
|
||||
*
|
||||
* @param string|null $value The value that caused the validation to fail.
|
||||
*/
|
||||
protected function getErrorMessage(string $rule, string $field, ?string $label = null, ?string $param = null, ?string $value = null): string
|
||||
{
|
||||
$param = $param ?? '';
|
||||
|
||||
// Check if custom message has been defined by user
|
||||
if (isset($this->customErrors[$field][$rule])) {
|
||||
$message = lang($this->customErrors[$field][$rule]);
|
||||
} else {
|
||||
// Try to grab a localized version of the message...
|
||||
// lang() will return the rule name back if not found,
|
||||
// so there will always be a string being returned.
|
||||
$message = lang('Validation.' . $rule);
|
||||
}
|
||||
|
||||
$message = str_replace('{field}', empty($label) ? $field : lang($label), $message);
|
||||
$message = str_replace(
|
||||
'{param}',
|
||||
empty($this->rules[$param]['label']) ? $param : lang($this->rules[$param]['label']),
|
||||
$message
|
||||
);
|
||||
|
||||
return str_replace('{value}', $value ?? '', $message);
|
||||
}
|
||||
|
||||
/**
|
||||
* Split rules string by pipe operator.
|
||||
*/
|
||||
protected function splitRules(string $rules): array
|
||||
{
|
||||
if (strpos($rules, '|') === false) {
|
||||
return [$rules];
|
||||
}
|
||||
|
||||
$string = $rules;
|
||||
$rules = [];
|
||||
$length = strlen($string);
|
||||
$cursor = 0;
|
||||
|
||||
while ($cursor < $length) {
|
||||
$pos = strpos($string, '|', $cursor);
|
||||
|
||||
if ($pos === false) {
|
||||
// we're in the last rule
|
||||
$pos = $length;
|
||||
}
|
||||
|
||||
$rule = substr($string, $cursor, $pos - $cursor);
|
||||
|
||||
while (
|
||||
(substr_count($rule, '[') - substr_count($rule, '\['))
|
||||
!== (substr_count($rule, ']') - substr_count($rule, '\]'))
|
||||
) {
|
||||
// the pipe is inside the brackets causing the closing bracket to
|
||||
// not be included. so, we adjust the rule to include that portion.
|
||||
$pos = strpos($string, '|', $cursor + strlen($rule) + 1) ?: $length;
|
||||
$rule = substr($string, $cursor, $pos - $cursor);
|
||||
}
|
||||
|
||||
$rules[] = $rule;
|
||||
$cursor += strlen($rule) + 1; // +1 to exclude the pipe
|
||||
}
|
||||
|
||||
return array_unique($rules);
|
||||
}
|
||||
|
||||
/**
|
||||
* Resets the class to a blank slate. Should be called whenever
|
||||
* you need to process more than one array.
|
||||
*/
|
||||
public function reset(): ValidationInterface
|
||||
{
|
||||
$this->data = [];
|
||||
$this->rules = [];
|
||||
$this->errors = [];
|
||||
$this->customErrors = [];
|
||||
|
||||
return $this;
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user