[8.x] Option to use table names when morphing

src/Illuminate/Database/Eloquent/Concerns/HasRelationships.php

@@ -731,7 +731,9 @@ public function getMorphClass()
             return array_search(static::class, $morphMap, true);
         }
 
-        return static::class;
+        return Relation::$useTableNamesForMorphMap
+                    ? $this->getTable()
+                    : static::class;
     }
 
     /**

src/Illuminate/Database/Eloquent/Relations/Relation.php

@@ -50,6 +50,13 @@ abstract class Relation
      */
     protected static $constraints = true;
 
+    /**
+     * Indicates that table names should be used when determining morph classes.
+     *
+     * @var bool
+     */
+    public static $useTableNamesForMorphMap = false;
+
     /**
      * An array to map class names to their morph names in the database.
      *
@@ -376,6 +383,16 @@ protected function whereInMethod(Model $model, $key)
                         : 'whereIn';
     }
 
+    /**
+     * Indicate that the table names should be used when determining morphed class names.
+     *
+     * @return void
+     */
+    public static function morphUsingTableNames()
+    {
+        static::$useTableNamesForMorphMap = true;
+    }
+
     /**
      * Set or get the morph map for polymorphic relations.
      *

tests/Database/DatabaseEloquentModelTest.php

@@ -1217,6 +1217,16 @@ public function testMorphOneCreatesProperRelation()
         $this->assertEquals(EloquentModelStub::class, $relation->getMorphClass());
     }
 
+    public function testMorphOneCreatesProperRelationWhenUsingTableNames()
+    {
+        Relation::morphUsingTableNames();
+        $model = new EloquentModelStub;
+        $this->addMockConnection($model);
+        $relation = $model->morphOne(EloquentModelSaveStub::class, 'morph');
+        $this->assertEquals('stub', $relation->getMorphClass());
+        Relation::$useTableNamesForMorphMap = false;
+    }
+
     public function testCorrectMorphClassIsReturned()
     {
         Relation::morphMap(['alias' => 'AnotherModel']);