Im having a hard time to create an RBAC Model in PHP that goes down to a Page restriction then field restriction. Ive already Made a RBAC for Pages only. My model is something like this.

User -> Role -> Module(page) -> Action -> Permission

But is it possible to create rights and permission down to an input field of a page?

Something Like this?

User -> Role -> Module -> Page -> Field -> Permission.

On Page Product

User A can see Product Cost Field and Product Price Field.

But

User B can only see Product Price Field. on the Product page.