From 36e68940ea236a9e96fb42671386a8939bb4e347 Mon Sep 17 00:00:00 2001
From: Alessandro Benoit <micc83@gmail.com>
Date: Fri, 17 Sep 2021 11:11:40 +0200
Subject: [PATCH] Add support for getting Model morphed alias

---
 .../Database/Eloquent/Relations/Relation.php          | 11 +++++++++++
 tests/Database/DatabaseEloquentRelationTest.php       | 10 ++++++++++
 2 files changed, 21 insertions(+)

diff --git a/src/Illuminate/Database/Eloquent/Relations/Relation.php b/src/Illuminate/Database/Eloquent/Relations/Relation.php
index aa8ce5a07da0..10e1ae30d4b0 100755
--- a/src/Illuminate/Database/Eloquent/Relations/Relation.php
+++ b/src/Illuminate/Database/Eloquent/Relations/Relation.php
@@ -465,6 +465,17 @@ public static function getMorphedModel($alias)
         return static::$morphMap[$alias] ?? null;
     }
 
+    /**
+     * Get the alias associated with a given Model class name.
+     *
+     * @param  string  $model
+     * @return false|int|string
+     */
+    public static function getMorphedAlias($model)
+    {
+        return array_search($model, static::$morphMap);
+    }
+
     /**
      * Handle dynamic method calls to the relationship.
      *
diff --git a/tests/Database/DatabaseEloquentRelationTest.php b/tests/Database/DatabaseEloquentRelationTest.php
index 65df35655c26..cfb9512cb719 100755
--- a/tests/Database/DatabaseEloquentRelationTest.php
+++ b/tests/Database/DatabaseEloquentRelationTest.php
@@ -234,6 +234,16 @@ public function testSettingMorphMapWithNumericKeys()
         Relation::morphMap([], false);
     }
 
+    public function testGettingAliasFromModelClassName()
+    {
+        Relation::morphMap(['user' => 'App\User']);
+
+        $this->assertEquals(
+            'user',
+            Relation::getMorphedAlias('App\User')
+        );
+    }
+
     public function testWithoutRelations()
     {
         $original = new EloquentNoTouchingModelStub;