[ADD] new_product_type: Implemented custom kit product without BOM dependency.

new_product_type/__init__.py

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+from . import models
+from . import wizard

new_product_type/__manifest__.py

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+{
+    'name': 'New Product Type',
+    'author': 'Aditi Pawar(adpaw)',
+    'license': 'LGPL-3',
+    'summary': 'Sell products as kits without Manufacturing or BoM',
+    'depends': [
+        "sale", "product", "account"
+    ],
+    'data': [
+        'security/ir.model.access.csv',
+        'views/product_views.xml',
+        'views/sale_order_line_views.xml',
+        'views/sale_kit_wizard_views.xml',
+        'report/invoice_report.xml',
+        'report/sale_order_portal_report.xml',
+        'report/sale_order_report.xml'
+    ],
+    'installable': True,
+    'auto_install': True
+}

new_product_type/models/__init__.py

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

new_product_type/models/product_template.py

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+from odoo import models, fields, api
+from odoo.exceptions import ValidationError
+
+
+class ProductTemplate(models.Model):
+    _inherit = 'product.template'
+
+    is_kit = fields.Boolean(string='Is Kit', default=False)
+    sub_product_ids = fields.Many2many('product.product', 'product_template_kit_component_rel')
+
+    @api.constrains("sub_product_ids")
+    def _check_no_self_product_reference(self):
+        for record in self:
+            if record.product_variant_ids in record.sub_product_ids:
+                raise ValidationError("A product cannot be added as a sub-product in its own kit.")

new_product_type/models/sale_order.py

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+from odoo import models, fields, api
+
+
+class SaleOrder(models.Model):
+    _inherit = 'sale.order'
+
+    has_kit_products = fields.Boolean(
+        compute='_compute_has_kit_products',
+        store=False
+    )
+
+    print_kit_in_report = fields.Boolean(
+        string="Print Kit Components in Report",
+        default=False
+    )
+
+    @api.depends('order_line.is_kit_line')
+    def _compute_has_kit_products(self):
+        for order in self:
+            order.has_kit_products = any(line.is_kit_line for line in order.order_line)

new_product_type/models/sale_order_line.py

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+from odoo import models, fields, api
+from odoo.exceptions import UserError
+
+
+class SaleOrderLine(models.Model):
+    _inherit = 'sale.order.line'
+
+    is_kit_line = fields.Boolean(related='product_id.product_tmpl_id.is_kit', store=True)
+    is_kit_sub_line = fields.Boolean(default=False)
+    kit_main_line_id = fields.Many2one('sale.order.line', string='Kit Main Line', ondelete='cascade')
+    kit_unit_price = fields.Float(default=0.0)
+
+    @api.ondelete(at_uninstall=False)
+    def _check_sub_kit_product(self):
+        for line in self:
+            if line.is_kit_sub_line:
+                raise UserError(
+                    "You cannot delete a kit sub-product line directly. "
+                    "Delete the main kit product line instead."
+                )
+
+    def action_open_kit_wizard(self):
+        self.ensure_one()
+        return {
+            'type': 'ir.actions.act_window',
+            'name': 'Kit Sub Products',
+            'res_model': 'sale.kit.wizard',
+            'view_mode': 'form',
+            'target': 'new',
+            'context': {
+                'default_order_line_id': self.id,
+            },
+        }

new_product_type/report/invoice_report.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<odoo>
+    <template
+        id="report_invoice_document_inherit_print_option"
+        inherit_id="account.report_invoice_document">
+        <xpath expr="//t[@t-set='lines_to_report']" position="attributes">
+            <attribute name="t-value">
+                o._get_move_lines_to_report().filtered(
+                    lambda l: not any(sl.is_kit_sub_line for sl in l.sale_line_ids)
+                    or any(sl.order_id.print_kit_in_report for sl in l.sale_line_ids)
+                )
+            </attribute>
+        </xpath>
+    </template>
+</odoo>

new_product_type/report/sale_order_portal_report.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<odoo>
+    <template
+        id="sale_order_portal_content_inherit_print_option"
+        inherit_id="sale.sale_order_portal_content">
+        <xpath expr="//t[@t-set='lines_to_report']" position="attributes">
+            <attribute name="t-value">
+                sale_order._get_order_lines_to_report().filtered(
+                    lambda l: not l.is_kit_sub_line or sale_order.print_kit_in_report
+                )
+            </attribute>
+        </xpath>
+    </template>
+</odoo>

new_product_type/report/sale_order_report.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<odoo>
+    <template
+        id="report_saleorder_document_inherit_print_option"
+        inherit_id="sale.report_saleorder_document">
+        <xpath expr="//t[@t-set='lines_to_report']" position="attributes">
+            <attribute name="t-value">
+                doc._get_order_lines_to_report().filtered(
+                    lambda l: not l.is_kit_sub_line or doc.print_kit_in_report
+                )
+            </attribute>
+        </xpath>
+    </template>
+</odoo>

new_product_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_sale_kit_wizard,sale.kit.wizard,model_sale_kit_wizard,base.group_user,1,1,1,1
+access_sale_kit_wizard_line,sale.kit.wizard.line,model_sale_kit_wizard_line,base.group_user,1,1,1,1

new_product_type/views/product_views.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<odoo>
+    <record id="product_template_form_view_kit_inherit" model="ir.ui.view">
+        <field name="name">product.template.form.kit.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="//field[@name='invoice_policy']" position="after">
+                <field name="is_kit"/>
+            </xpath>
+            <xpath expr="//field[@name='is_kit']" position="after">
+                <field name="sub_product_ids" widget="many2many_tags"
+                    options="{'no_create': True}" invisible="not is_kit"/>
+            </xpath>
+        </field>
+    </record>
+</odoo>

new_product_type/views/sale_kit_wizard_views.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<odoo>
+    <record id="sale_kit_wizard_form_view" model="ir.ui.view">
+        <field name="name">sale.kit.wizard.form</field>
+        <field name="model">sale.kit.wizard</field>
+        <field name="arch" type="xml">
+            <form string="Kit Sub Products">
+                <sheet>
+                    <group>
+                        <field name="product_id" string="Product" readonly="1"/>
+                        <field name="order_line_id" invisible="1"/>
+                    </group>
+                    <separator string="SUB PRODUCTS"/>
+                    <field name="wizard_line_ids" nolabel="1">
+                        <list editable="bottom" create="0">
+                            <field name="product_id" string="Product" readonly="1" force_save="1"/>
+                            <field name="quantity"/>
+                            <field name="price"/>
+                        </list>
+                    </field>
+                </sheet>
+                <footer>
+                    <button name="action_confirm_kit"
+                            type="object"
+                            string="Confirm"
+                            class="btn-primary"/>
+                    <button string="Cancel"
+                            class="btn-secondary"
+                            special="cancel"/>
+                </footer>
+            </form>
+        </field>
+    </record>
+</odoo>

new_product_type/views/sale_order_line_views.xml

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+<odoo>
+    <record id="sale_order_line_kit_button_inherit" model="ir.ui.view">
+        <field name="name">sale.order.line.kit.button.inherit</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_open_kit_wizard"
+                    type="object"
+                    icon="fa-cubes"
+                    title="Configure Kit Sub Products"
+                    invisible="not is_kit_line or is_kit_sub_line or state == 'sale'"
+                    class="btn-sm"/>
+            </xpath>
+            <xpath expr="//field[@name='payment_term_id']" position="after">
+                <field name="print_kit_in_report" invisible="not has_kit_products"/>
+            </xpath>
+            <xpath expr="//field[@name='order_line']/list//field[@name='product_id']" position="attributes">
+                <attribute name="readonly">is_kit_sub_line</attribute>
+            </xpath>
+            <xpath expr="//field[@name='order_line']/list/field[@name='product_template_id']" position="attributes">
+                <attribute name="readonly">is_kit_sub_line</attribute>
+            </xpath>
+            <xpath expr="//field[@name='order_line']/list//field[@name='product_uom_qty']" position="attributes">
+                <attribute name="readonly">is_kit_sub_line</attribute>
+            </xpath>
+            <xpath expr="//field[@name='order_line']/list/field[@name='tax_ids']" position="attributes">
+                <attribute name="readonly">is_kit_sub_line</attribute>
+            </xpath>
+            <xpath expr="//field[@name='order_line']/list//field[@name='price_unit']" position="attributes">
+                <attribute name="readonly">is_kit_sub_line</attribute>
+            </xpath>
+        </field>
+    </record>
+</odoo>

new_product_type/wizard/__init__.py

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+from . import sale_kit_wizard
+from . import sale_kit_wizard_line

new_product_type/wizard/sale_kit_wizard.py

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+from odoo import models, fields, api
+from odoo.fields import Command
+
+
+class SaleKitWizard(models.TransientModel):
+    _name = 'sale.kit.wizard'
+    _description = 'Sale Kit Sub Products Wizard'
+
+    order_line_id = fields.Many2one('sale.order.line', string='Order Line', required=True)
+    product_id = fields.Many2one('product.template', string='Product')
+    wizard_line_ids = fields.One2many(
+        'sale.kit.wizard.line',
+        inverse_name='wizard_id',
+        string='Sub Products',
+    )
+
+    @api.model
+    def default_get(self, fields_list):
+        res = super().default_get(fields_list)
+
+        active_model = self.env.context.get('active_model')
+        active_id = self.env.context.get('active_id')
+
+        if active_model != 'sale.order.line' or not active_id:
+            return res
+
+        sale_line = self.env['sale.order.line'].browse(active_id)
+        if not sale_line.product_id:
+            return res
+
+        product = sale_line.product_id
+        kit_sub_product = []
+
+        for sub in product.product_tmpl_id.sub_product_ids:
+            existing_line = sale_line.order_id.order_line.filtered(
+                lambda line: line.product_id == sub
+                and line.kit_main_line_id == sale_line
+            )
+            kit_sub_product.append(
+                Command.create({
+                    'product_id': sub.id,
+                    'quantity': existing_line.product_uom_qty
+                        if existing_line else 1.0,
+                    'price': existing_line.kit_unit_price
+                        if existing_line else sub.lst_price,
+                })
+            )
+
+        res.update({
+            'product_id': product.product_tmpl_id.id,
+            'order_line_id': sale_line.id,
+            'wizard_line_ids': kit_sub_product,
+        })
+        return res
+
+    def action_confirm_kit(self):
+        self.ensure_one()
+
+        parent_line = self.order_line_id
+        order = parent_line.order_id
+        total_price = parent_line.product_id.lst_price
+
+        for wiz_line in self.wizard_line_ids:
+            existing_line = order.order_line.filtered(
+                lambda line: line.product_id == wiz_line.product_id
+                and line.kit_main_line_id == parent_line
+            )
+
+            values = {
+                'product_uom_qty': wiz_line.quantity,
+                'price_unit': 0.0,
+                'kit_unit_price': wiz_line.price,
+                'sequence': parent_line.sequence,
+            }
+
+            if existing_line:
+                existing_line.write(values)
+            else:
+                self.env['sale.order.line'].create({
+                    **values,
+                    'name': wiz_line.product_id.name,
+                    'order_id': order.id,
+                    'product_id': wiz_line.product_id.id,
+                    'is_kit_sub_line': True,
+                    'kit_main_line_id': parent_line.id,
+                })
+            total_price += wiz_line.price * wiz_line.quantity
+        parent_line.write({'price_unit': total_price})
+        return {'type': 'ir.actions.act_window_close'}

new_product_type/wizard/sale_kit_wizard_line.py

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+from odoo import models, fields
+
+
+class SaleKitWizardLine(models.TransientModel):
+    _name = 'sale.kit.wizard.line'
+    _description = 'Sale Kit Wizard Line'
+
+    wizard_id = fields.Many2one('sale.kit.wizard', required=True, ondelete='cascade')
+    product_id = fields.Many2one('product.product', string='Product')
+    quantity = fields.Float(default=1.0, digits=(16, 2))
+    price = fields.Float(digits=(16, 2))