Or, I found another solution : it's to add a button on each record to display the pivot view. but it's gives me this error :

AttributeError: type object 'miadi.tarifs' has no attribute 'display_pivot_view'

Here are my codes :

class miadi_tarifs(models.Model):
    _name = 'miadi.tarifs'
    
    code = fields.Char(string='Code', default='', required=True)
    libelle = fields.Char(string='Libellé', default='', required=True)
    remise = fields.Float(string='Remise', digits=(5,2), default=0)
    
    _sql_constraints = [
    ('uniq_id', 'unique(code)', 'A pricelist already exists with this code. It must be unique !'),
    ]

    @api.multi
    def display_pivot_view(self):
        tarif = self.code
        return {'name': _('Pivot Lines'), 'view_type': 'form', 'view_mode': 'pivot,tree', 'view_id': False, 'views': [(self.env.ref('miadi_packaging.miadi_lignestarifs_pivot').id or False, 'pivot'), (self.env.ref('miadi_packaging.miadi_lignestarifs_tree').id or False, 'tree')], 'res_model': 'miadi.lignestarifs', 'type': 'ir.actions.act_window', 'target': 'current', 'domain': [('code_tarif', '=', tarif),]} #Retourne la vue tableau, la treeview et la vue formulaire

class miadi_lignesTarifs(models.Model):
    _name = 'miadi.lignestarifs'
    
    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)

<record id="miadi_tarifs_tree" model="ir.ui.view">
            <field name="name">miadi.tarifs.tree</field>
            <field name="model">miadi.tarifs</field>
            <field name="arch" type="xml">
                <tree string="Prices" >
                    <field name="code" />
                    <field name="libelle" />
                    <field name="remise" />
                    <button name="display_pivot_view" type="object" string="Table view" class="oe_highlight" />
                </tree>
            </field>
        </record>

How to fix the problem ?

In the action

 <!-- action --> 
    <record id="yourid" model="ir.actions.act_window">
    <field name="name">....</field>
    <field name="res_model">yourmodel</field>
    <field name="view_type">form</field>
    <field name="view_mode">tree,form</field>
</record>