Bookshelf.js belongsToMany query with wrong column

Question

I'm fighting hard with relations inside my bookshelf model. What I'm trying to do is to create schema which contains 4 tables:

• users
• roles
• privileges
• privileges_roles

With relations between them like this:

users manyTOone roles manyTOone privileges_roles oneTOmany privileges

I've easily achieved relations between privileges and roles with:

Privileges

class Privileges {
    constructor() {
        this.model = bookshelf.Model.extend({
            tableName: 'privileges',
            roles: function () {
                return this.belongsToMany(Roles.model).through(PrivilegeRole.model);
            }
        });
    };
}

Roles

class Roles {
    constructor() {
        this.model = bookshelf.Model.extend({
          tableName: 'roles',
          privileges: function() {
              return this.belongsToMany(Privileges.model).through(PrivilegeRole.model);
          },
          users: function() {
              return this.hasMany(Users.model);
          }
        });
    };
}

PrivilegeRole

class PrivilegeRole {
    constructor() {
        this.model = bookshelf.Model.extend({
          tableName: 'privileges_roles',
          role: function() {
              return this.belongsTo(Roles.model);
          },
          privileges: function() {
              return this.belongsTo(Privileges.model);
          }
        });
    };
}

Those works really fine. Unfortunately when I'm trying to fetch Privileges from User model it keep inserting id instead of role_id to query.

class Users {
    constructor() {
        this.model = bookshelf.Model.extend({
            tableName: 'users',
            role: function () {
                return this.belongsTo(Role.model);
            },
            privileges: function () {
                // return this.belongsToMany(Privileges.model).through(PrivilegeRole.model);
                return this.belongsToMany(Privileges.model, 'privileges_roles', 'role_id', 'privilege_id', 'role_id');
            }
        });
    };
}

So at the end whatever I do, bookshelf is creating query like this:

select privileges .*, privileges_roles . id as _pivot_id , privileges_roles . role_id as _pivot_role_id , privileges_roles . privilege_id as _pivot_privilege_id from privileges inner join privileges_roles on privileges_roles . privilege_id = privileges . id where privileges_roles . role_id in (1)

Instead of role_id in (3) like it's in a record fetched.

Answer 1

Alright so I've finally found a solution. Instead of previously used:

privileges: function () {
                return this.belongsToMany(Privileges.model, 'privileges_roles', 'role_id', 'privilege_id', 'role_id');
            }

I had to simply use:

privileges: function () {
                return this.belongsToMany(Privileges.model).through(PrivilegeRole.model, 'role_id', 'privilege_id', 'role_id');
            }