Hello,

I will give more details :

I've two models (codes below), only the first is display and when I click on a record from the first model (miadi.tarifs), I want to display a pivot view for all records in the second model (miadi.lignestarifs) where there is the same "code_tarif". Check codes :

miadi.tarifs :

class miadi_tarifs(models.Model):
    _name = 'miadi.tarifs'
    _order = 'code'
    
    code = fields.Char(string='Code', default="", required=True)
    libelle = fields.Char(string='Description', default='', required=True)
    remise = fields.Float(string='Discount', digits=(5,2), default=0)

miadi.lignestarifs :

class miadi_lignesTarifs(models.Model):
    _name = 'miadi.lignestarifs'
    _order = 'code_tarif, produit_id, conditionnement_id'
    
    code_tarif = fields.Many2one('miadi.tarifs', 'Price Code', default='', required=True, ondelete='cascade')
    numero_ordre = fields.Integer('Order number')
    produit_id = fields.Many2one('product.product', 'Product', required=True, ondelete='cascade')
    conditionnement_id = fields.Many2one('miadi.packaging', 'Packaging', required=True, ondelete='cascade')
    prix_unitaire = fields.Float('Unit Price', default=0)

So, in "miadi.lignestarifs", I've some records with the same "code_tarif". In the model "miadi.tarif", when I click on a record, I've the form view of the record but, instead of this, I want a pivot view based on the model "miadi.lignestarifs" for the record selected.

I hope you will understand better.

Regards