Laravel 5 - Many To Many Pivot table with Fields

I am trying to get the second lot of fields from a many to many relationship.

So, if, for example, I have this structure:

users
     id
     name

roles
     id
     role

user-roles
     user_id
     role_id

and I use the typical belongs to many syntax in the roles table:

return $this->belongsToMany('App\Models\Users', 'user-roles',  'user_id', 'role_id');

I will end up with something that looks like this:

[{
    "id": 1,
    "name": "Bruce banner",
    "pivot": {
        "user_id": 1,
        "role_id": 1
    }
}, {
    "id": 2,
    "name": "Steve Jobs",   
    "pivot": {
        "user_id": 2,
        "role_id": 2
}]

how do I get something that includes the actual roles names:

[{
    "id": 1,
    "name": "Bruce banner",
    "pivot": {
        "user_id": 1,
        "role_id": 1,
        "role": "admin"
    }
}, {
    "id": 2,
    "name": "Steve Jobs",   
    "pivot": {
        "user_id": 2,
        "role_id": 2,
        "role": "admin"
}]

I have Googled and most searches show how to include other fields from the pivot table using ->withPivot but that is not what I need.

Any help would be appreciated.

via Chebli Mohamed