From 2a3d273f99a5931f56f9654aab84c12ca3bc4852 Mon Sep 17 00:00:00 2001
From: Dennis Eichhorn <spl1nes.com@googlemail.com>
Date: Wed, 4 Nov 2020 20:41:47 +0100
Subject: [PATCH] added get by parent function

---
 DataStorage/Database/DataMapperAbstract.php | 26 +++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/DataStorage/Database/DataMapperAbstract.php b/DataStorage/Database/DataMapperAbstract.php
index 68c029676..3a4aa10be 100644
--- a/DataStorage/Database/DataMapperAbstract.php
+++ b/DataStorage/Database/DataMapperAbstract.php
@@ -182,6 +182,14 @@ class DataMapperAbstract implements DataMapperInterface
      */
     protected static string $table = '';
 
+    /**
+     * Parent column.
+     *
+     * @var string
+     * @since 1.0.0
+     */
+    protected static string $parent = '';
+
     /**
      * Model to use by the mapper.
      *
@@ -2826,6 +2834,24 @@ class DataMapperAbstract implements DataMapperInterface
         return self::getAllByQuery($query, $relations, $depth);
     }
 
+    /**
+     * Parent parent.
+     *
+     * @param int $depth   Relation depth
+     * @param mixed $value Parent value id
+     *
+     * @return array
+     *
+     * @since 1.0.0
+     */
+    public static function getByParent($value, int $depth = 3) : array
+    {
+        $query = self::getQuery();
+        $query->where(static::$table . '_' . $depth . '.' . static::$parent, '=', $value);
+
+        return self::getAllByQuery($query, RelationType::ALL, $depth);
+    }
+
     /**
      * Get all by custom query.
      *