Through association with SailsJS. Make sure all references to models are lowercase because that is how they're stored.

AccountRole.js

module.exports = {

  tableName: 'account_roles',

  attributes: {
    account_id: 'integer',
    name: 'string',
    description: 'text',
    deleted: 'boolean',

    users: {
      collection: 'user',
      via: 'accountRoles',
      through: 'accountroleuser'
    }
  }

};

AccountRoleUser.js

module.exports = {

  tableName: 'account_role_user',

  tables: ['users', 'account_roles'],

  junctionTable: true,

  attributes: {
    id: {
      primaryKey: true,
      autoIncrement: true,
      type: 'integer'
    },
    
    users: {
      columnName: 'user_id',
      type: 'integer',
      foreignKey: true,
      references: 'user',
      on: 'id',
      via: 'accountroles',
      groupBy: 'user'
    },
    
    accountRoles: {
      columnName: 'account_role_id',
      type: 'integer',
      foreignKey: true,
      references: 'accountrole',
      on: 'id',
      via: 'users',
      groupBy: 'accountrole'
    }
  }

};

User.js

module.exports = {

  tableName: 'users',

  attributes: {
    name: 'string',
    password: {
      type: 'string',
      minLength: 4,
      required: true
    },
    bio: 'string',
    email: {
      type: 'email',
      required: true
    },
    cloudinary_public_id: 'string',

    accountRoles: {
      collection: 'accountRole',
      via: 'users',
      through: 'accountroleuser'
    }
  }

};

Hello!! Following not works, in associated table, no records being added.

User.create(params).populate('roles').exec(function createUser(err, user){
            if(err) {
                return res.json(err);
            }
            Role.findOne({name : 'super'}).then(function(role) {
                        user.roles.add(role.id);
                user.save(function(err){
                    console.log(role.id);
                    if (err) { return res.serverError(err); }
                    return res.ok();
                });
            })