[IMP] sale_mrp: link SO<->MO in case of MTO

In case of MTO+Mufacturing on product in a confirmed sale order,
add a stat button to the MO generated by this SO. Also add the inverse,
from MO to SO source document.

task-1913392

addons/sale_mrp/__manifest__.py

@@ -16,6 +16,8 @@ from sales order. It adds sales name and sales Reference on production order.
     'depends': ['mrp', 'sale_stock'],
     'data': [
         'security/ir.model.access.csv',
+        'views/mrp_production_views.xml',
+        'views/sale_order_views.xml'
     ],
     'demo': [],
     'installable': True,

addons/sale_mrp/models/__init__.py

@@ -1,5 +1,6 @@
 # -*- coding: utf-8 -*-
 # Part of Odoo. See LICENSE file for full copyright and licensing details.
 
-from . import sale_mrp
+from . import sale
 from . import account_move
+from . import mrp_production

addons/sale_mrp/models/mrp_production.py

@@ -0,0 +1,38 @@
+# -*- coding: utf-8 -*-
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+
+from odoo import api, fields, models, _
+
+
+class MrpProduction(models.Model):
+    _inherit = 'mrp.production'
+
+    sale_order_count = fields.Integer(
+        "Count of Source SO",
+        compute='_compute_sale_order_count',
+        groups='sales_team.group_sale_salesman')
+
+    @api.depends('move_dest_ids.group_id.sale_id')
+    def _compute_sale_order_count(self):
+        for production in self:
+            production.sale_order_count = len(production.move_dest_ids.group_id.sale_id)
+
+    def action_view_sale_orders(self):
+        self.ensure_one()
+        sale_order_ids = self.move_dest_ids.group_id.sale_id.ids
+        action = {
+            'res_model': 'sale.order',
+            'type': 'ir.actions.act_window',
+        }
+        if len(sale_order_ids) == 1:
+            action.update({
+                'view_mode': 'form',
+                'res_id': sale_order_ids[0],
+            })
+        else:
+            action.update({
+                'name': _("Sources Sale Orders of %s" % self.name),
+                'domain': [('id', 'in', sale_order_ids)],
+                'view_mode': 'tree,form',
+            })
+        return action

addons/sale_mrp/models/sale.py

@@ -2,7 +2,40 @@
 # Part of Odoo. See LICENSE file for full copyright and licensing details.
 
 from odoo import api, fields, models, _
-from odoo.tools import float_compare, float_round
+
+
+class SaleOrder(models.Model):
+    _inherit = 'sale.order'
+
+    mrp_production_count = fields.Integer(
+        "Count of MO generated",
+        compute='_compute_mrp_production_count',
+        groups='mrp.group_mrp_user')
+
+    @api.depends('procurement_group_id.stock_move_ids.created_production_id')
+    def _compute_mrp_production_count(self):
+        for sale in self:
+            sale.mrp_production_count = len(sale.procurement_group_id.stock_move_ids.created_production_id)
+
+    def action_view_mrp_production(self):
+        self.ensure_one()
+        mrp_production_ids = self.procurement_group_id.stock_move_ids.created_production_id.ids
+        action = {
+            'res_model': 'mrp.production',
+            'type': 'ir.actions.act_window',
+        }
+        if len(mrp_production_ids) == 1:
+            action.update({
+                'view_mode': 'form',
+                'res_id': mrp_production_ids[0],
+            })
+        else:
+            action.update({
+                'name': _("Manufacturing Orders Generated by %s" % self.name),
+                'domain': [('id', 'in', mrp_production_ids)],
+                'view_mode': 'tree,form',
+            })
+        return action
 
 
 class SaleOrderLine(models.Model):

addons/sale_mrp/views/mrp_production_views.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<odoo><data>
+    <record id="mrp_production_form_view_sale" model="ir.ui.view">
+        <field name="name">mrp.production.inherited.form.sale</field>
+        <field name="model">mrp.production</field>
+        <field name="inherit_id" ref="mrp.mrp_production_form_view"/>
+        <field name="arch" type="xml">
+            <xpath expr="//div[@name='button_box']" position="inside">
+                <button class="oe_stat_button" name="action_view_sale_orders" type="object" icon="fa-dollar" attrs="{'invisible': [('sale_order_count', '=', 0)]}" groups="sales_team.group_sale_salesman">
+                    <div class="o_field_widget o_stat_info">
+                        <span class="o_stat_value"><field name="sale_order_count"/></span>
+                        <span class="o_stat_text">Sales</span>
+                    </div>
+                </button>
+            </xpath>
+        </field>
+    </record>
+</data></odoo>

addons/sale_mrp/views/sale_order_views.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<odoo><data>
+    <record id="sale_order_form_mrp" model="ir.ui.view">
+        <field name="name">sale.order.inherited.form.mrp</field>
+        <field name="model">sale.order</field>
+        <field name="inherit_id" ref="sale.view_order_form"/>
+        <field name="arch" type="xml">
+            <xpath expr="//div[@name='button_box']" position="inside">
+                <button class="oe_stat_button" name="action_view_mrp_production" type="object" icon="fa-wrench" attrs="{'invisible': [('mrp_production_count', '=', 0)]}" groups="mrp.group_mrp_user">
+                    <div class="o_field_widget o_stat_info">
+                        <span class="o_stat_value"><field name="mrp_production_count"/></span>
+                        <span class="o_stat_text">Manufacturing</span>
+                    </div>
+                </button>
+            </xpath>
+        </field>
+    </record>
+</data></odoo>