将布尔字段从父类更改为子类 - Odoo v8

Consider this:

考虑一下：

@api.multi
@api.onchange('order_lines', 'order_lines.is_book_block', '')
@api.constrains('order_lines', 'order_lines.isbn')
def check_quantity(self):
    location = self.printer_book_block.property_stock_supplier.id
    for rec in self:
        if rec.order_lines:
            for line in rec.order_lines:
                if line.qty > line.isbn.with_context({ 'location': location, }).qty_available >= 0:#line.isbn.qty_available in location:
                    rec.write({'state': 'awaitingraw'})
                else:
                    rec.write({'state': 'work_in_progress', 'is_book_block': True})
@api.multi
@api.onchan