Add controlled lists for loan types and object (ownership) status

src/MDLoanTypesSet.php

@@ -0,0 +1,44 @@
+<?PHP
+/**
+ * Contains a list of types of loans.
+ *
+ * @author Joshua Ramon Enslin <joshua@museum-digital.de>
+ */
+declare(strict_types = 1);
+
+/**
+ * Contains a list of types of loans.
+ */
+final class MDLoanTypesSet extends MDValueSet {
+
+    const DEFAULT_LOAN_TYPE = 'outgoing';
+
+    const LOAN_TYPES = [
+        'outgoing',
+        'incoming',
+    ];
+
+    /**
+     * Gets an unsorted list of the entries in a translated version.
+     *
+     * @param MDTlLoader $tlLoader Translation loader.
+     *
+     * @return array<string>
+     */
+    public static function getUnsortedList(MDTlLoader $tlLoader):array {
+        return parent::getTlUnsortedList($tlLoader, self::LOAN_TYPES, "loan_types", "loan_types");
+
+    }
+
+    /**
+     * Gets a list of the entries in a translated version.
+     *
+     * @param MDTlLoader $tlLoader Translation loader.
+     *
+     * @return array<string>
+     */
+    public static function getSortedList(MDTlLoader $tlLoader):array {
+        return parent::getTlSortedList($tlLoader, self::LOAN_TYPES, "loan_types", "loan_types");
+
+    }
+}