comparing castable attributes just by serialization

Author: guram-vashakidze

src/Eloquent/DocumentModel.php

@@ -379,13 +379,6 @@ public function originalIsEquivalent($key)
         }
 
         if ($this->isClassCastable($key)) {
-            $attribute = $this->castAttribute($key, $attribute);
-            $original = $this->castAttribute($key, $original);
-
-            if ($attribute === $original) {
-                return true;
-            }
-
             return serialize($attribute) === serialize($original);
         }
 

tests/ModelTest.php

@@ -1084,6 +1084,9 @@ public function testGetDirtyObjects(): void
 
         $user->save();
         $this->assertEmpty($user->getDirty());
+
+        $user->options = (new Options())->setOption1('Value1');
+        $this->assertNotEmpty($user->getDirty());
     }
 
     public function testChunkById(): void