[IMP] sale: change the pricelist in the quotation its update prices of product.

purpose of this commit is when the pricelist is chnaged and
some products alredy added to the sale order, display a button
"recompute price" that throws a confirmation model asking for
recompute the price of the so line

task: 1947320
Closes: #31535

Co-authored-by: Mitali Patel <mpa@odoo.com>

addons/sale/models/sale.py

@@ -162,7 +162,7 @@ class SaleOrder(models.Model):
     pricelist_id = fields.Many2one(
         'product.pricelist', string='Pricelist', check_company=True,  # Unrequired company
         required=True, readonly=True, states={'draft': [('readonly', False)], 'sent': [('readonly', False)]},
-        domain="['|', ('company_id', '=', False), ('company_id', '=', company_id)]",
+        domain="['|', ('company_id', '=', False), ('company_id', '=', company_id)]", tracking=1, 
         help="If you change the pricelist, only newly added lines will be affected.")
     currency_id = fields.Many2one("res.currency", related='pricelist_id.currency_id', string="Currency", readonly=True, required=True)
     analytic_account_id = fields.Many2one(
@@ -225,6 +225,9 @@ class SaleOrder(models.Model):
                                        string='Transactions', copy=False, readonly=True)
     authorized_transaction_ids = fields.Many2many('payment.transaction', compute='_compute_authorized_transaction_ids',
                                                   string='Authorized Transactions', copy=False, readonly=True)
+    show_update_pricelist = fields.Boolean(string='Has Pricelist Changed',
+                                           help="Technical Field, True if the pricelist was changed;\n"
+                                                " this will then display a recomputation button")
 
     _sql_constraints = [
         ('date_order_conditional_required', "CHECK( (state IN ('sale', 'done') AND date_order IS NOT NULL) OR state NOT IN ('sale', 'done') )", "A confirmed sales order requires a confirmation date."),
@@ -402,6 +405,31 @@ class SaleOrder(models.Model):
                 }
             }
 
+    @api.onchange('pricelist_id')
+    def _onchange_pricelist_id(self):
+        if self.order_line and self.pricelist_id and self._origin.pricelist_id and self._origin.pricelist_id != self.pricelist_id:
+            self.show_update_pricelist = True
+        else:
+            self.show_update_pricelist = False
+
+    def update_prices(self):
+        self.ensure_one()
+        lines_to_update = []
+        for line in self.order_line.filtered(lambda line: not line.display_type):
+            product = line.product_id.with_context(
+                partner=self.partner_id,
+                quantity=line.product_uom_qty,
+                date=self.date_order,
+                pricelist=self.pricelist_id.id,
+                uom=line.product_uom.id
+            )
+            price_unit = self.env['account.tax']._fix_tax_included_price_company(
+                line._get_display_price(product), line.product_id.taxes_id, line.tax_id, line.company_id)
+            lines_to_update.append((1, line.id, {'price_unit': price_unit}))
+        self.update({'order_line': lines_to_update})
+        self.show_update_pricelist = False
+        self.message_post(body=_("Product prices have been recomputed according to pricelist <b>%s<b> ") % self.pricelist_id.display_name)
+
     @api.model
     def create(self, vals):
         if vals.get('name', _('New')) == _('New'):

addons/sale/views/sale_views.xml

@@ -320,7 +320,17 @@
                                 <label for="date_order" string="Order Date"/>
                             </div>
                             <field name="date_order" attrs="{'required': [('state', 'in', ['sale', 'done'])], 'invisible': [('state', 'in', ['draft', 'sent'])]}" nolabel="1"/>
-                            <field name="pricelist_id" groups="product.group_product_pricelist" options="{'no_open':True,'no_create': True}"/>
+                            <field name="show_update_pricelist" invisible="1"/>
+                            <label for="pricelist_id" groups="product.group_product_pricelist"/>
+                            <div groups="product.group_product_pricelist" class="o_row">
+                                <field name="pricelist_id" options="{'no_open':True,'no_create': True}"/>
+                                <button name="update_prices" type="object"
+                                    string=" Update Prices"
+                                    help="Recompute all prices based on this pricelist"
+                                    class="btn-link mb-1 px-0" icon="fa-refresh"
+                                    confirm="This will update all unit prices based on the currently set pricelist."
+                                    attrs="{'invisible': ['|', ('show_update_pricelist', '=', False), ('state', 'in', ['sale', 'done','cancel'])]}"/>
+                            </div>
                             <field name="currency_id" invisible="1"/>
                             <field name="payment_term_id" options="{'no_open':True,'no_create': True}"/>
                         </group>

addons/sale_management/models/sale_order.py

@@ -62,6 +62,13 @@ class SaleOrder(models.Model):
             'discount': option.discount,
         }
 
+    def update_prices(self):
+        self.ensure_one()
+        res = super().update_prices()
+        for line in self.sale_order_option_ids:
+            line.price_unit = self.pricelist_id.get_product_price(line.product_id, line.quantity, self.partner_id, uom_id=line.uom_id.id)
+        return res
+
     @api.onchange('sale_order_template_id')
     def onchange_sale_order_template_id(self):
         if not self.sale_order_template_id: