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lib/pkp/classes/validation/ValidatorControlledVocab.php

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+<?php
+
+/**
+ * @file classes/validation/ValidatorControlledVocab.php
+ *
+ * Copyright (c) 2014-2021 Simon Fraser University
+ * Copyright (c) 2000-2021 John Willinsky
+ * Distributed under the GNU GPL v3. For full terms see the file docs/COPYING.
+ *
+ * @class ValidatorControlledVocab
+ *
+ * @ingroup validation
+ *
+ * @brief Validation check that checks if value is within a certain set retrieved
+ *  from the database.
+ */
+
+namespace PKP\validation;
+
+use PKP\controlledVocab\ControlledVocabDAO;
+use PKP\db\DAORegistry;
+
+class ValidatorControlledVocab extends Validator
+{
+    /** @var array */
+    public $_acceptedValues;
+
+    /**
+     * Constructor.
+     *
+     * @param string $symbolic
+     * @param int $assocType
+     * @param int $assocId
+     */
+    public function __construct($symbolic, $assocType, $assocId)
+    {
+        $controlledVocabDao = DAORegistry::getDAO('ControlledVocabDAO'); /** @var ControlledVocabDAO $controlledVocabDao */
+        $controlledVocab = $controlledVocabDao->getBySymbolic($symbolic, $assocType, $assocId);
+        if ($controlledVocab) {
+            $this->_acceptedValues = array_keys($controlledVocab->enumerate());
+        } else {
+            $this->_acceptedValues = [];
+        }
+    }
+
+
+    //
+    // Implement abstract methods from Validator
+    //
+    /**
+     * @see Validator::isValid()
+     * Value is valid if it is empty and optional or is in the set of accepted values.
+     *
+     * @return bool
+     */
+    public function isValid($value)
+    {
+        return in_array($value, $this->_acceptedValues);
+    }
+}
+
+if (!PKP_STRICT_MODE) {
+    class_alias('\PKP\validation\ValidatorControlledVocab', '\ValidatorControlledVocab');
+}