[10.x] HasCasts returning false instead of true (#46992)

* fix: HasCasts returning false when fully qualified class-name was provided as a second parameter

* fix: styling

* fix: Removed unecessary PHP check

* formatting

---------

Co-authored-by: Taylor Otwell <[email protected]>

Author: jure-knezovic

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

@@ -864,6 +864,8 @@ protected function getCastType($key)
             $convertedCastType = 'immutable_custom_datetime';
         } elseif ($this->isDecimalCast($castType)) {
             $convertedCastType = 'decimal';
+        } elseif (class_exists($castType)) {
+            $convertedCastType = $castType;
         } else {
             $convertedCastType = trim(strtolower($castType));
         }

tests/Database/DatabaseEloquentModelTest.php

@@ -343,6 +343,12 @@ public function testDirtyOnEnumArrayObject()
         $this->assertTrue($model->isDirty('asEnumArrayObjectAttribute'));
     }
 
+    public function testHasCastsOnEnumAttribute()
+    {
+        $model = new EloquentModelEnumCastingStub();
+        $this->assertTrue($model->hasCast('enumAttribute', StringStatus::class));
+    }
+
     public function testCleanAttributes()
     {
         $model = new EloquentModelStub(['foo' => '1', 'bar' => 2, 'baz' => 3]);
@@ -3047,6 +3053,11 @@ protected function serializeDate(DateTimeInterface $date)
     }
 }
 
+class EloquentModelEnumCastingStub extends Model
+{
+    protected $casts = ['enumAttribute' => StringStatus::class];
+}
+
 class EloquentModelDynamicHiddenStub extends Model
 {
     protected $table = 'stub';