#### How to update image where is null?

I am currently working on a project with an update function using laravel the update function is working fine, but my problem is that when i try to update a record and stay it as is and when i see the database the image column is empty..how can i check if the file is empty and when its empty do not update?because when i try to update a record with an image and hit the update button the image is gone..

public function update(Request $request) {$user = auth()->user();
if ($user->image == null) {$path = null;
} else {
if ($request->hasFile('image')) {$file = $request->file('image');$nane = time();
$extension =$file->getClientOriginalExtension();
$fileName =$nane . '.' . $extension;$path = $file->storeAs('images/users',$fileName, 'public');
}
}
$user->image =$path;
$user->first_name =$request->first_name;
$user->last_name =$request->last_name;
$user->job_title =$request->job_title;
......
\$user->save();
}


Source: Laravel