Edit Page URL customization

I want to customize the url in the edit page of a resource to use slug in place id. I don't want to change in the model. I am using :

'edit' => Pages\EditAuthor::route('/{record:slug}/edit'),

'edit' => Pages\EditAuthor::route('/{record:slug}/edit'),

'edit' => Pages\EditAuthor::route('/{record:slug}/edit'),

'edit' => Pages\EditAuthor::route('/{record:slug}/edit'),

But this does not seem to work. Thanks in advance for any help.