Laravel membuat model
$user = User::create([
'first_name' => 'Taylor',
'last_name' => 'Otwell',
'title' => 'Developer',
]);
$user->title = 'Painter';
$user->isDirty(); // true
$user->isDirty('title'); // true
$user->isDirty('first_name'); // false
$user->isClean(); // false
$user->isClean('title'); // false
$user->isClean('first_name'); // true
$user->save();
$user->isDirty(); // false
$user->isClean(); // true
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