Initial xentral_oss_20.3.c9ffacf

classes/Modules/Api/Validator/Rule/UniqueRule.php

@@ -0,0 +1,59 @@
+<?php
+
+namespace Xentral\Modules\Api\Validator\Rule;
+
+use Rakit\Validation\Rule;
+use Xentral\Components\Database\Database;
+
+class UniqueRule extends Rule
+{
+    /** @var string $message */
+    protected $message = "The attribute ':attribute' has to be unique. The value ':value' is already in use.";
+
+    /** @var array $fillable_params */
+    protected $fillable_params = ['table', 'column', 'except'];
+
+    /** @var Database $db */
+    protected $db;
+
+    /**
+     * @param Database $database
+     */
+    public function __construct(Database $database)
+    {
+        $this->db = $database;
+    }
+
+    /**
+     * @param mixed $value
+     *
+     * @return bool
+     *
+     * @throws \Rakit\Validation\MissingRequiredParameterException
+     */
+    public function check($value)
+    {
+        // make sure required parameters exists
+        $this->requireParameters(['table', 'column']);
+
+        // getting parameters
+        $column = $this->parameter('column');
+        $table = $this->parameter('table');
+        $except = (int)$this->parameter('except'); // ID des Datensatzes der von der Prüfung ausgenommen werden soll
+
+        $select = $this->db->select()
+            ->cols(['COUNT(*) AS num'])
+            ->from($table)
+            ->where($this->db->escapeIdentifier($column) . ' = :value');
+        $bindValues = ['value' => $value];
+
+        if ($except) {
+            $select->where('id != :id');
+            $bindValues['id'] = $except;
+        }
+
+        $count = $this->db->fetchValue($select->getStatement(), $bindValues);
+
+        return intval($count) === 0;
+    }
+}