Hi, I search how to interact with openerp database in javascript. I've found this example on the API documentation but it's don't works.

    var Users = new openerp.web.Model('res.users');
    Users.query(['name', 'login', 'user_email', 'signature'])
         .filter([['active', '=', true], ['company_id', '=', main_company]])
         .limit(15)
         .all().then(function (users) {
        // do work with users records
        alert(users)
    });

The error:

Object [object Object] has no method 'query'

Do you know why?

Thanks in advance for your help.