92 lines
3.1 KiB
PHP
92 lines
3.1 KiB
PHP
<?php
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/**
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* @file classes/form/validation/FormValidatorCustom.php
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*
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* Copyright (c) 2014-2021 Simon Fraser University
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* Copyright (c) 2000-2021 John Willinsky
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* Distributed under the GNU GPL v3. For full terms see the file docs/COPYING.
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*
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* @class FormValidatorCustom
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*
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* @ingroup form_validation
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*
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* @brief Form validation check with a custom user function performing the validation check.
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*/
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namespace PKP\form\validation;
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class FormValidatorCustom extends FormValidator
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{
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/** @var callable Custom validation function */
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public $_userFunction;
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/** @var array Additional arguments to pass to $userFunction */
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public $_additionalArguments;
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/** @var bool If true, field is considered valid if user function returns false instead of true */
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public $_complementReturn;
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/** @var mixed[] Arguments to pass to getMessage() */
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public $_messageArgs = [];
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/** @var array If present, additional arguments to pass to the getMessage translation function
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* The user function is passed the form data as its first argument and $additionalArguments, if set, as the remaining arguments. This function must return a boolean value.
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*
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* @param \PKP\form\Form $form the associated form
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* @param string $field the name of the associated field
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* @param string $type the type of check, either "required" or "optional"
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* @param string $message the error message for validation failures (i18n key)
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* @param callable $userFunction function the user function to use for validation
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* @param array $additionalArguments optional, a list of additional arguments to pass to $userFunction
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* @param bool $complementReturn optional, complement the value returned by $userFunction
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* @param array $messageArgs optional, arguments to pass to getMessage()
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*/
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public function __construct(&$form, $field, $type, $message, $userFunction, $additionalArguments = [], $complementReturn = false, $messageArgs = [])
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{
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parent::__construct($form, $field, $type, $message);
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$this->_userFunction = $userFunction;
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$this->_additionalArguments = $additionalArguments;
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$this->_complementReturn = $complementReturn;
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$this->_messageArgs = $messageArgs;
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}
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//
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// Setters and Getters
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//
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/**
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* @see FormValidator::getMessage()
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*
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* @return string
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*/
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public function getMessage()
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{
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return __($this->_message, $this->_messageArgs);
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}
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//
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// Public methods
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//
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/**
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* @see FormValidator::isValid()
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* Value is valid if it is empty and optional or validated by user-supplied function.
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*
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* @return bool
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*/
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public function isValid()
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{
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if ($this->isEmptyAndOptional()) {
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return true;
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} else {
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$ret = call_user_func_array($this->_userFunction, array_merge([$this->getFieldValue()], $this->_additionalArguments));
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return $this->_complementReturn ? !$ret : $ret;
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}
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}
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}
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if (!PKP_STRICT_MODE) {
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class_alias('\PKP\form\validation\FormValidatorCustom', '\FormValidatorCustom');
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}
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