[ADD] product_kit_type: introduce kit product type with subproduct handling in Sales Orders

product_kit_type/__init__.py

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+from . import models
+from . import wizard

product_kit_type/__manifest__.py

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+{
+    'name': 'Product Type Kit',
+    'version': '1.0',
+    'category': 'Sales/Sales',
+    'summary': 'Allow selecting salesperson for pos order',
+    'depends': ['sale_management'],
+    'installable': True,
+    'data': [
+        'security/ir.model.access.csv',
+        'views/product_template_form_view.xml',
+        'views/sale_order_views.xml',
+        'views/sale_order_customer_preview.xml',
+        'wizard/views/sub_products_view.xml',
+        'report/invoice_report.xml'
+    ],
+    'license': 'LGPL-3',
+}

product_kit_type/models/__init__.py

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+from . import product_template
+from . import sale_order_line
+from . import sale_order

product_kit_type/models/product_template.py

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+from odoo import models, fields, api
+
+
+class InheritedProductTemplate(models.Model):
+    _inherit = "product.template"
+
+    is_kit = fields.Boolean("Is kit?")
+    sub_products = fields.Many2many("product.product", string="Sub Products")
+
+    @api.onchange("is_kit")
+    def _onchange_is_kit(self):
+        if not self.is_kit:
+            self.sub_products = None

product_kit_type/models/sale_order.py

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+from odoo import models, fields
+
+
+class InheritedSalesOrder(models.Model):
+    _inherit = "sale.order"
+
+    print_in_report = fields.Boolean()

product_kit_type/models/sale_order_line.py

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+from odoo import models, fields, api
+
+
+class InheritedSalesOrderLine(models.Model):
+    _inherit = "sale.order.line"
+
+    is_kit = fields.Boolean(related="product_template_id.is_kit", store=False)
+    is_sub_product = fields.Boolean()
+
+    def action_sub_products(self):
+        return {
+            'name': f'Product: {self.name}',
+            'view_mode': 'form',
+            'res_model': 'product_kit_type.subproducts',
+            'view_id': self.env.ref('product_kit_type.subproducts_view_form').id,
+            'type': 'ir.actions.act_window',
+            'target': 'new',
+        }
+
+    @api.ondelete(at_uninstall=False)
+    def unlink_with_sub_product_lines(self):
+        for line in self:
+            if not line.is_sub_product:
+                sale_order_line_id = line.id
+                sub_lines = self.search([
+                    ('product_id', '=', line.product_id.id),
+                    ('is_sub_product', '=', True),
+                    ('linked_line_id', '=', sale_order_line_id)
+                ])
+                if sub_lines:
+                    sub_lines.unlink()

product_kit_type/report/invoice_report.xml

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+<?xml version="1.0" encoding="UTF-8" ?>
+<odoo>
+    <template id="sale_order_report_inherit" inherit_id="sale.report_saleorder_document">
+        <xpath expr="//tbody/t/tr" position="attributes">
+            <attribute name="t-if">(doc.print_in_report) or (not line.is_sub_product)</attribute>
+        </xpath>
+    </template>
+</odoo>

product_kit_type/security/ir.model.access.csv

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+id,name,model_id:id,group_id:id,perm_read,perm_write,perm_create,perm_unlink
+access_subproducts,access_product_kit_type.subproducts,product_kit_type.model_product_kit_type_subproducts,base.group_user,1,1,1,
+access_subproducts_lines,access_product_kit_type.subproducts.line,product_kit_type.model_product_kit_type_subproducts_line,base.group_user,1,1,1,

product_kit_type/views/product_template_form_view.xml

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+<?xml version="1.0" encoding="UTF-8" ?>
+<odoo>
+    <record id="product_template_form_view_inherit" model="ir.ui.view">
+        <field name="name">product.template.form.inherit.product_type_kit</field>
+        <field name="model">product.template</field>
+        <field name="inherit_id" ref="product.product_template_form_view" />
+        <field name="arch" type="xml">
+            <xpath expr="//page[@name='general_information']//group[@name='group_general']" position="inside">
+                <field name="is_kit" />
+                <field name="sub_products" invisible="not is_kit" widget="many2many_tags" />
+            </xpath>
+        </field>
+    </record>    
+</odoo>

product_kit_type/views/sale_order_customer_preview.xml

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+<?xml version="1.0" encoding="UTF-8" ?>
+<odoo>
+    <template id="sale_portal_templates_report_inherit" inherit_id="sale.sale_order_portal_content">
+        <xpath expr="//table[@id='sales_order_table']/tbody/t/tr" position="attributes">
+            <attribute name="t-if">(sale_order.print_in_report) or (not line.is_sub_product)</attribute>
+        </xpath>
+    </template>
+ </odoo>
+

product_kit_type/views/sale_order_views.xml

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+<?xml version="1.0" encoding="UTF-8" ?>
+<odoo>
+    <record id="view_order_form_inherit" model="ir.ui.view">
+        <field name="name">sale.order.form.inherit.product_type_kit</field>
+        <field name="model">sale.order</field>
+        <field name="inherit_id" ref="sale.view_order_form" />
+        <field name="arch" type="xml">
+            <xpath expr="//field[@name='product_template_id']" position="after">
+                <button name="action_sub_products" icon="fa-tags" title="Sub Products" type="object" invisible="is_kit == False or state != 'draft'" />
+            </xpath>
+
+            <xpath expr="//field[@name='order_line']/list" position="attributes">
+                <attribute name="decoration-warning">is_sub_product</attribute>
+            </xpath>
+
+            <xpath expr="//field[@name='order_line']/list/field[@name='product_template_id']" position="attributes">
+                <attribute name="readonly">is_sub_product</attribute>
+            </xpath>
+
+            <xpath expr="//field[@name='order_line']/list/field[@name='product_uom_qty']" position="attributes">
+                <attribute name="readonly">is_sub_product</attribute>
+            </xpath>
+
+            <xpath expr="//field[@name='order_line']/list/field[@name='price_unit']" position="attributes">
+                <attribute name="readonly">is_sub_product</attribute>
+            </xpath>
+
+            <xpath expr="//field[@name='order_line']/list/field[@name='tax_id']" position="attributes">
+                <attribute name="readonly">is_sub_product</attribute>
+            </xpath>
+
+            <xpath expr="//group[@name='order_details']" position="inside">
+                <field name="print_in_report" string="Print in report?" />
+            </xpath>
+        </field>
+    </record>
+</odoo>

product_kit_type/wizard/__init__.py

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+from . import sub_products
+from . import sub_product_line

product_kit_type/wizard/sub_product_line.py

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+from odoo import models, fields
+
+
+class SubProductLineWizard(models.TransientModel):
+    _name = "product_kit_type.subproducts.line"
+
+    wizard_id = fields.Many2one("product_kit_type.subproducts", required=True)
+    product_id = fields.Many2one("product.product", string="Product")
+    product_qty = fields.Float(string="Quantity")
+    price_unit = fields.Float(string="Price")

product_kit_type/wizard/sub_products.py

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+from odoo import models, fields, api
+
+
+class SubProductsWizard(models.TransientModel):
+    _name = "product_kit_type.subproducts"
+    _description = "Sub Products"
+
+    sale_order_line_id = fields.Many2one("sale.order.line", string="Sale Order Line")
+    sub_product_line_ids = fields.One2many("product_kit_type.subproducts.line", "wizard_id", string="Sub Products")
+
+    @api.model
+    def default_get(self, fields_list):
+        res = super().default_get(fields_list)
+
+        sale_order_line = self.env["sale.order.line"].browse(self.env.context.get("active_id"))
+
+        if sale_order_line:
+            res["sale_order_line_id"] = sale_order_line.id
+
+        existing_lines = self.env["sale.order.line"].search([
+            ("linked_line_id", "=", sale_order_line.id),
+            ("is_sub_product", "=", True)
+        ])
+
+        sub_product_lines = []
+        if existing_lines:
+            for line in existing_lines:
+                sub_product_lines.append((0, 0, {
+                    "product_id": line.product_id.id,
+                    "product_qty": line.product_uom_qty,
+                    "price_unit": line.product_id.list_price,
+                }))
+        else:
+            for sub_product in sale_order_line.product_template_id.sub_products:
+                sub_product_lines.append((0, 0, {
+                    "product_id": sub_product.id,
+                    "product_qty": 1,
+                    "price_unit": sub_product.list_price,
+                }))
+
+        res["sub_product_line_ids"] = sub_product_lines
+        return res
+
+    def action_confirm(self):
+        self.ensure_one()
+        sale_order = self.sale_order_line_id.order_id
+        existing_sub_lines = sale_order.order_line.filtered(lambda line: line.is_sub_product and line.linked_line_id.id == self.sale_order_line_id.id)
+        existing_sub_product_map = {line.product_id.id: line for line in existing_sub_lines}
+        total_price = 0
+
+        for sub_product in self.sub_product_line_ids:
+            if sub_product.product_id.id in existing_sub_product_map:
+                existing_line = existing_sub_product_map[sub_product.product_id.id]
+                existing_line.write({
+                    "product_uom_qty": sub_product.product_qty,
+                    "price_unit": 0.00,
+                })
+            else:
+                self.env["sale.order.line"].create({
+                    "name": sub_product.product_id.name,
+                    "order_id": self.sale_order_line_id.order_id.id,
+                    "product_id": sub_product.product_id.id,
+                    "product_uom_qty": sub_product.product_qty,
+                    "price_unit": 0.00,
+                    "is_sub_product": True,
+                    'linked_line_id': self.sale_order_line_id.id,
+                })
+
+            total_price += sub_product.product_qty * sub_product.price_unit
+
+        self.sale_order_line_id.write({'price_unit': total_price})
+
+        return {"type": "ir.actions.act_window_close"}

product_kit_type/wizard/views/sub_products_view.xml

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+<?xml version="1.0" encoding="UTF-8" ?>
+<odoo>
+    <record id="subproducts_view_form" model="ir.ui.view">
+        <field name="name">product_kit_type.subproducts.form</field>
+        <field name="model">product_kit_type.subproducts</field>
+        <field name="arch" type="xml">
+            <form>
+                <field name="sub_product_line_ids" nolabel="1">
+                    <list editable="bottom" create='0'>
+                        <field name="product_id" />
+                        <field name="product_qty"/>
+                        <field name="price_unit"/>
+                    </list>
+                </field>
+                <footer>
+                    <button string="Confirm" type="object" name="action_confirm" class="btn-primary" />
+                    <button string="Cancel" special="cancel" />
+                </footer>
+            </form>
+        </field>
+    </record>
+</odoo>