Hi! 

i have a model 'customer.sale' and i created a pivot view, all field display except for many2many field.

class CustSale(models.Model):

    _name = 'customer.sale'

    _auto = False

    partner = fields.Many2one('res.partner', string='Name', readonly=True)

    contact = fields.Many2one('res.partner', string="Name with Contact Name", readonly=True)

    partner_class = fields.Many2one('custom.partner', string='Exclusivity Type', readonly=True)

    town = fields.Char('Town')

    name = fields.Char('Incentive Program', readonly=True)

    mtd_vol = fields.Float('MTD Sales (converted)', readonly=True)

    target = fields.Float('Target', readonly=True)

    bal = fields.Float('Balance', readonly=True)

    state = fields.Selection([('approve','Approved'),('draft','for Review'),('end','Ended'),('cancel','Cancel')], string='Status', default='draft',

                             readonly=True)

    month_start = fields.Datetime('Date', readonly=True)

    custom_product_category = fields.Many2many('cust.perf', string='Product Category Many', readonly=True)

and i want to display the many2many field in a pivot view. How can i do that ?