This Module provides named scope for:

• Search records in a extjs way (but can reusable)
• Paginate records in a extjs way (but can be reusable)
• Add association to the model (used for search in dependents tables)

  Examples:

    invoices = current_account.store.invoices.with(:order).search(params)
    invoices_count = invoices.size
    invoices_paginated = invoices.paginate(params)