[ADD] rental_deposit: adding deposit to rental products.

rental_deposit/__init__.py

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+from . import models

rental_deposit/__manifest__.py

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+{
+    'author': 'Aditi (adpaw)',
+    'name': 'Deposit Rental App',
+    'license': 'LGPL-3',
+    'depends': ['sale_renting', 'website_sale'],
+    'data': [
+        'views/res_config_settings_view.xml',
+        'views/product_template_view.xml',
+        'views/template_view.xml'
+    ],
+    'assets': {
+        'web.assets_frontend': [
+            'rental_deposit/static/src/deposit_amount.js',
+        ],
+    },
+    'installable': True,
+    'auto_install': True,
+}

rental_deposit/models/__init__.py

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+from . import res_config_settings
+from . import product_template
+from . import sale_order_line
+from . import res_company

rental_deposit/models/product_template.py

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+from odoo import fields, models
+
+
+class ProductTemplate(models.Model):
+    _inherit = 'product.template'
+
+    requires_deposit = fields.Boolean(string="Requires Deposit")
+    deposit_amount = fields.Float()

rental_deposit/models/res_company.py

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+from odoo import fields, models
+
+
+class ResCompany(models.Model):
+    _inherit = "res.company"
+
+    deposit_product = fields.Many2one("product.product")

rental_deposit/models/res_config_settings.py

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+from odoo import fields, models
+
+
+class ResConfigSettings(models.TransientModel):
+    _inherit = 'res.config.settings'
+
+    deposit_product = fields.Many2one(
+        "product.product",
+        related="company_id.deposit_product",
+        string="Deposit",
+        readonly=False
+    )

rental_deposit/models/sale_order_line.py

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+from odoo import api, fields, models
+from odoo.exceptions import UserError
+
+
+class SaleOrderLine(models.Model):
+    _inherit = 'sale.order.line'
+
+    is_deposit_line = fields.Boolean(default=False)
+    parent_rental_line_id = fields.Many2one(
+        'sale.order.line',
+        string="Parent Rental Line",
+        ondelete="cascade",
+        index=True
+    )
+
+    @api.model_create_multi
+    def create(self, vals_list):
+        lines = super().create(vals_list)
+        rental_lines = lines.filtered(
+            lambda l: l.product_id.rent_ok
+            and l.product_id.requires_deposit
+            and l.product_id.deposit_amount > 0
+            and not l.is_deposit_line
+        )
+        if not rental_lines:
+            return lines
+        company_map = {}
+        for line in rental_lines:
+            company = line.company_id
+            if company not in company_map:
+                if not company.deposit_product:
+                    raise UserError("Please set deposit product in settings.")
+                company_map[company] = company.deposit_product
+        deposit_vals = []
+        for line in rental_lines:
+            deposit_product = company_map[line.company_id]
+            deposit_vals.append({
+                'order_id': line.order_id.id,
+                'product_id': deposit_product.id,
+                'product_uom_qty': line.product_uom_qty,
+                'price_unit': line.product_id.deposit_amount,
+                'name': f"Deposit fee for product: {line.product_id.name}",
+                'is_deposit_line': True,
+                'parent_rental_line_id': line.id,
+            })
+        self.create(deposit_vals)
+        return lines
+
+        # deposit_vals = []
+        # for line in rental_lines:
+        #     deposit_product = line.company_id.deposit_product
+        #     if not deposit_product:
+        #         raise UserError("Please set deposit product in settings.")
+        #     deposit_vals.append({
+        #         'order_id': line.order_id.id,
+        #         'product_id': deposit_product.id,
+        #         'product_uom_qty': line.product_uom_qty,
+        #         'price_unit': line.product_id.deposit_amount,
+        #         'name': f"Deposit fee for product: {line.product_id.name}",
+        #         'is_deposit_line': True,
+        #         'parent_rental_line_id': line.id,
+        #     })
+        # self.create(deposit_vals)
+        # return lines
+
+    @api.ondelete(at_uninstall=False)
+    def _unlink_deposit_fee(self):
+        if not self.env.context.get("bypass_deposit_protection_for_delete"):
+            for record in self:
+                if record.is_deposit_line:
+                    raise UserError("You can't delete a Deposit Product line directly.")
+
+    def write(self, vals):
+        if not self.env.context.get("bypass_deposit_protection_for_write"):
+            for record in self:
+                if record.is_deposit_line:
+                    raise UserError("You can't edit Deposit Product line directly.")
+        res = super().write(vals)
+        if 'product_uom_qty' not in vals:
+            return res
+        rental_lines = self.filtered(
+            lambda l: l.product_id.rent_ok
+            and l.product_id.requires_deposit
+            and l.product_id.deposit_amount > 0
+            and not l.is_deposit_line
+        )
+        for line in rental_lines:
+            deposit_line = self.search([('parent_rental_line_id', '=', line.id)], limit=1)
+            if deposit_line:
+                deposit_line.with_context(bypass_deposit_protection_for_write=True).write({
+                    'product_uom_qty': line.product_uom_qty,
+                    'price_unit': line.product_id.deposit_amount,
+                })
+        return res

rental_deposit/static/src/deposit_amount.js

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+import { Component, onMounted } from "@odoo/owl";
+import { registry } from "@web/core/registry";
+
+export class DepositAmount extends Component {
+    setup() {
+        onMounted(() => {
+            const depositEl = document.querySelector('#deposit_amount_val');
+            const qtyInput = document.querySelector('input[name="add_qty"]');
+
+            if (!depositEl || !qtyInput) return;
+
+            const baseAmount = parseFloat(depositEl.dataset.baseAmount) || 0;
+
+            const calculateTotal = () => {
+                const quantity = parseFloat(qtyInput.value) || 1;
+                depositEl.textContent = (baseAmount * quantity).toFixed(2);
+            };
+
+            qtyInput.addEventListener('input', calculateTotal);
+            qtyInput.addEventListener('change', calculateTotal);
+
+            calculateTotal();
+        });
+    }
+}
+
+registry.category("public_components").add("deposit_amount", DepositAmount);

rental_deposit/tests/__init__.py

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+from . import common
+from . import test_sale_order_line

rental_deposit/tests/common.py

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+from odoo.tests.common import TransactionCase
+
+
+class RentalDepositCommon(TransactionCase):
+    @classmethod
+    def setUpClass(cls):
+        super().setUpClass()
+
+        cls.deposit_product = cls.env['product.product'].create({
+            'name': 'Deposit Fee',
+            'type': 'service',
+        })
+        cls.env.company.deposit_product = cls.deposit_product
+
+        cls.rental_product_a = cls.env['product.product'].create({
+            'name': 'Test Projector',
+            'rent_ok': True,
+            'requires_deposit': True,
+            'deposit_amount': 50.0,
+        })
+
+        cls.rental_product_b = cls.env['product.product'].create({
+            'name': 'Test Bike',
+            'rent_ok': True,
+            'requires_deposit': True,
+            'deposit_amount': 30.0,
+        })
+
+        cls.rental_product_c = cls.env['product.product'].create({
+            'name': 'Test Camera',
+            'rent_ok': True,
+            'requires_deposit': True,
+            'deposit_amount': 20.0,
+        })
+
+        cls.rental_no_deposit = cls.env['product.product'].create({
+            'name': 'Test Chair',
+            'rent_ok': True,
+            'requires_deposit': False,
+        })
+
+        cls.partner = cls.env['res.partner'].create({'name': 'Test Customer'})
+
+    def _make_order(self):
+        """Creates a fresh sale order each time."""
+        return self.env['sale.order'].create({
+            'partner_id': self.partner.id,
+        })
+
+    def _add_line(self, order, product, qty=1, price=10.0):
+        """Helper — adds a single order line and returns it."""
+        return self.env['sale.order.line'].create({
+            'order_id': order.id,
+            'product_id': product.id,
+            'product_uom_qty': qty,
+            'price_unit': price,
+        })