Get formatted attributes from a related table for eloquent model

I have 3 tables

 1. User table[id, name, email]
 2. user_roles[user_id, role_id]
 3. roles[ id, permission{post:{edit:true,delete:false}} ]

 user hasone user_roles

 roles belongs to user_roles

userRole.role is eager loaded in user model

Is it possible to get the permission by calling some custom function in user model. instead of user->userRole->role everytime. like call like $user->permissions() will return json from roles tables

via Chebli Mohamed