[ADD] new_product_type: Added sub-products to a particular product

new_producttype/__init__.py

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+from . import models
+from . import wizard

new_producttype/__manifest__.py

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+{
+    'name': "New Product Type",
+    'version': '0.1',
+    'depends': ['sale'],
+    'sequence': 1,
+    'application': True,
+    'installable': True,
+    'data': [
+        "security/ir.model.access.csv",
+        "report/sub_product_report.xml",
+        "wizard/sub_product_kit_wizard_view.xml",
+        "views/product_views.xml",
+        "views/sale_order_view.xml",
+        "views/sub_product_customer_preview.xml",
+    ],
+    'license': 'AGPL-3'
+}

new_producttype/models/__init__.py

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

new_producttype/models/product_template.py

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+from odoo import fields, models, api
+from odoo.exceptions import ValidationError
+
+
+class ProductTemplate(models.Model):
+    _inherit = 'product.template'
+
+    is_kit = fields.Boolean(default=False, string='Is kit')
+    sub_products_ids = fields.Many2many('product.product', string='Sub products')
+
+    @api.constrains("sub_products_ids")
+    def check_sub_product_not_itself(self):
+        for record in self:
+            if record.id in record.sub_products_ids.mapped("product_tmpl_id.id"):
+                raise ValidationError(
+                    "A product cannot be added as its own sub-product"
+                )
+
+    @api.constrains("sub_products_ids", "is_kit")
+    def check_sub_product(self):
+        for record in self:
+            if record.is_kit and not record.sub_products_ids:
+                raise ValidationError(
+                    "A kit product must have at least one sub-product"
+                )

new_producttype/models/sale_order.py

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+from odoo import models, fields
+
+
+class SaleOrder(models.Model):
+    _inherit = 'sale.order'
+
+    print_report = fields.Boolean(string="Print in Report")

new_producttype/models/sale_order_line.py

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+from odoo import fields, models
+
+
+class SaleOrderLine(models.Model):
+    _inherit = 'sale.order.line'
+
+    is_kit = fields.Boolean(string='Is kit', related='product_id.is_kit')
+    main_product_line_id = fields.Many2one('sale.order.line', ondelete='cascade')
+    sub_products_ids = fields.Many2many(
+        "product.product",
+        related="product_template_id.sub_products_ids",
+        string="Sub Products",
+    )
+    last_price = fields.Float()
+
+    def action_open_kit_wizard(self):
+        return {
+            'type': 'ir.actions.act_window',
+            'name': 'sub.product.kit.wizard.view',
+            'res_model': 'sub.product.kit.wizard',
+            'view_mode': 'form',
+            'target': 'new',
+        }

new_producttype/report/sub_product_report.xml

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+<?xml version="1.0" encoding="UTF-8" ?>
+<odoo>
+    <template id="report_sub_product_template" inherit_id="sale.report_saleorder_document">
+        <xpath expr="//tbody[@class='sale_tbody']/t/tr" position="attributes">
+            <attribute name="t-if">(doc.print_report) or (not line.main_product_line_id)</attribute>
+        </xpath>
+    </template>
+</odoo>

new_producttype/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_sub_product_kit_wizard,access_sub_product_kit_wizard,model_sub_product_kit_wizard,base.group_user,1,1,1,1
+access_sub_product_line_kit_wizard,access_sub_product_line_kit_wizard,model_sub_product_line_kit_wizard,base.group_user,1,1,1,1

new_producttype/views/product_views.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.view.inherit</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//group[@name='group_general']" position="inside">
+                <field name="is_kit"/>
+                <field name="sub_products_ids" widget="many2many_tags" invisible="is_kit == False"/>
+            </xpath>
+        </field>
+    </record>
+</odoo>

new_producttype/views/sale_order_view.xml

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+<?xml version="1.0" encoding="UTF-8" ?>
+<odoo>
+    <record id="view_order_form_inherit_sub_product" model="ir.ui.view">
+        <field name="name">view.order.form.inherit.sub.product</field>
+        <field name="model">sale.order</field>
+        <field name="inherit_id" ref="sale.view_order_form"/>
+        <field name="arch" type="xml">
+            <xpath expr="//list//field[@name='product_template_id']" position="after">
+                <button name="action_open_kit_wizard"
+                        type="object"
+                        string="Add Sub-Products"
+                        invisible="not is_kit or state=='sale' or main_product_line_id"
+                />
+            </xpath>
+            <xpath expr="//field[@name='order_line']/list" position="attributes">
+                <attribute name="decoration-warning">main_product_line_id</attribute>
+            </xpath>
+            <xpath expr="//list//field[@name='product_template_id']" position="attributes">
+                <attribute name="readonly">main_product_line_id</attribute>
+            </xpath>
+            <xpath expr="//list//field[@name='product_uom_qty']" position="attributes">
+                <attribute name="readonly">main_product_line_id</attribute>
+            </xpath>
+            <xpath expr="//list//field[@name='price_unit']" position="attributes">
+                <attribute name="readonly">main_product_line_id</attribute>
+            </xpath>
+            <xpath expr="//list//field[@name='tax_id']" position="attributes">
+                <attribute name="readonly">main_product_line_id</attribute>
+            </xpath>
+            <xpath expr="//group//field[@name='payment_term_id']" position="after">
+                <field name="print_report"/>
+            </xpath>
+        </field>
+    </record>
+</odoo>

new_producttype/views/sub_product_customer_preview.xml

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+<?xml version="1.0" encoding="UTF-8" ?>
+<odoo>
+    <template id="sale_portal_templates_report_inherited" 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_report) or (not line.main_product_line_id)</attribute>
+        </xpath>
+    </template>
+</odoo>

new_producttype/wizard/__init__.py

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+from . import sub_product_kit_wizard
+from . import sub_product_line_kit_wizard

new_producttype/wizard/sub_product_kit_wizard.py

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+from odoo import fields, models, api, Command
+
+
+class SubProductKitWizard(models.TransientModel):
+    _name = 'sub.product.kit.wizard'
+
+    sale_order_line_id = fields.Many2one('sale.order.line', required=True)
+    sub_products_ids = fields.One2many('sub.product.line.kit.wizard', 'sub_products_line_id')
+
+    @api.model
+    def default_get(self, fields_list):
+        res = super().default_get(fields_list)
+        sale_order_line_id = self._context.get("active_id")
+        if sale_order_line_id:
+            sale_order_line = self.env["sale.order.line"].browse(sale_order_line_id)
+            existing_lines = self.env["sale.order.line"].search([
+                ("main_product_line_id", "=", sale_order_line_id)
+            ])
+            sub_product_line_wizard = self.env["sub.product.line.kit.wizard"]
+            line_values = []
+            if existing_lines:
+                vals_list = [
+                    {
+                        "product_id": line.product_id.id,
+                        "price": line.price_unit,
+                        "quantity": line.product_uom_qty,
+                    }
+                    for line in existing_lines
+                ]
+            else:
+                vals_list = [
+                    {
+                        "product_id": sub_product.id,
+                        "price": sub_product.list_price,
+                        "quantity": 1,
+                    }
+                    for sub_product in sale_order_line.product_id.sub_products_ids
+                ]
+            if vals_list:
+                curr_products = sub_product_line_wizard.create(vals_list)
+                line_values = [Command.link(product.id) for product in curr_products]
+            res.update({
+                "sub_products_ids": line_values,
+                "sale_order_line_id": sale_order_line_id,
+            })
+        return res
+
+    def action_confirm(self):
+        existing_sub_product_lines_map = {
+            line.product_id.id: line
+            for line in self.env["sale.order.line"].search(
+                [
+                    ("main_product_line_id", "=", self.sale_order_line_id.id),
+                    ("order_id", "=", self.sale_order_line_id.order_id.id)
+                ]
+            )
+        }
+        total_of_sub_product_price = 0
+        for rec in self.sub_products_ids:
+            product_id = rec.product_id.id
+            existing_line = existing_sub_product_lines_map.get(product_id)
+            if existing_line:
+                existing_line.write({
+                    "product_uom_qty": rec.quantity,
+                    "last_price": rec.price,
+                    "price_unit": 0,
+                })
+            else:
+                self.env["sale.order.line"].create(
+                    {
+                        "order_id": self.sale_order_line_id.order_id.id,
+                        "product_id": rec.product_id.id,
+                        "product_uom_qty": rec.quantity,
+                        "last_price": rec.price,
+                        "price_unit": 0,
+                        "main_product_line_id": self.sale_order_line_id.id,
+                    }
+                )
+            total_of_sub_product_price += (rec.quantity * rec.price)
+        total_of_sub_product_price += (
+                self.sale_order_line_id.product_uom_qty
+                * self.sale_order_line_id.product_template_id.list_price
+        )
+        self.sale_order_line_id.price_unit = total_of_sub_product_price
+        return True

new_producttype/wizard/sub_product_kit_wizard_view.xml

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+<?xml version="1.0" encoding="UTF-8" ?>
+<odoo>
+    <record id="sub_product_kit_wizard_view" model="ir.ui.view">
+        <field name="name">sub.product.kit.wizard.view</field>
+        <field name="model">sub.product.kit.wizard</field>
+        <field name="arch" type="xml">
+            <form string="Sub-Products">
+                <sheet>
+                    <field name="sub_products_ids">
+                        <list create="false" editable="bottom">
+                            <field name="product_id" readonly="1"/>
+                            <field name="quantity"/>
+                            <field name="price"/>
+                        </list>
+                    </field>
+                    <footer>
+                        <button name="action_confirm" class="btn btn-primary" type="object" string="Confirm"/>
+                        <button string="Cancel" class="btn-secondary" special="cancel"/>
+                    </footer>
+                </sheet>
+            </form>
+        </field>
+    </record>
+</odoo>

new_producttype/wizard/sub_product_line_kit_wizard.py

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+from odoo import fields, models
+
+
+class SubProductLineKitWizard(models.TransientModel):
+    _name = 'sub.product.line.kit.wizard'
+
+    sub_products_line_id = fields.Many2one('sub.product.kit.wizard')
+    product_id = fields.Many2one('product.product', required=True)
+    quantity = fields.Float(default=0.0)
+    price = fields.Float(default=0)