Instead of returning a warning return a wizard with two buttons. One to confirm and other to cncel

I tried that but the problem is when i click in the confirmation button from the wizard, my function can't execute :

class Wizard_confirmation(models.TransientModel):

_name = "affichage2.wizard_confirmation"

@api.multi

def call_vente(self):

self.env["affichage2.vente_packs"].vendre_cap()

And this is my principal function which was called from the wizard class :

class Vente_pack_distr(models.Model):

_name = 'affichage2.vente_packs'

pack_ref = fields.Many2many('affichage2.pack_stock', string="Numéro de série de pack", required=True,

domain=['&', ('vente', '=', None), ('approved_by', '=', None)])

pack_ref2 = fields.Many2many('affichage2.pack_stock', string="Numéro de série de pack")

distributeur = fields.Many2one('res.users', 'Vendu à Distributeur')

vendeur = fields.Many2one('res.users', 'vendeur')

date_vente = fields.Char(string="Date de vente au distributeur", required=False)

zone_text = fields.Text(string="Zone", required=False)

@api.multi

def call_confirmation_wizard(self):

return {

'name': 'Confirmation',

'type': 'ir.actions.act_window',

'view_type': 'form',

'view_mode': 'form',

'res_model': 'affichage2.wizard_confirmation',

#'res_id': self.id,

#'view_id': self.env.ref("affichage2.confirm_wizard_form").id,

'view_id': False,

'target': 'new',

'nodestroy': True,

}

@api.multi

def vendre_cap(self):

pack_ref2 = self.pack_ref

self.date_vente = datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S")

self.vendeur = self.env['res.users'].search([('id', '=', self.env.uid)])

#self.write({'date_vente': datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S")})

#self.write({'vendeur': self.env['res.users'].search([('id', '=', self.env.uid)])})

# change default value to vendu

instance_of_needed_model = self.env['affichage2.pack_stock'].browse(self.pack_ref.id)

instance_of_needed_model.write({'status': 'Vendu'})

# Changer pour chaque capture son distributeur qui a l'acheter

##############################################################

listo3 = list(self.pack_ref)

# chercher les captures qui ont le meme id que dans la relation many2many

for element in listo3:

rec = self.env['affichage2.pack_stock'].search([('id', '=', element.id)])

rec.vente = self.distributeur

#warning_message2 = "Distributeur " + str(self.distributeur) + "\n products :" + str(self.pack_ref)

try this: https://learnopenerp.blogspot.com/2017/12/how-to-display-confirmation-display-box.html