[ADD] rental: created a rental app for adding deposit for particular product

rental/__init__.py

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+from . import models

rental/__manifest__.py

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+{
+    'name': 'Rental App',
+    'category': '',
+    'description': """This module is  rental app module""",
+    'depends': ['sale_renting', 'website_sale_renting'],
+    'data': [
+        "views/res_config_settings_views.xml",
+        "views/product_template_views.xml",
+        "views/templates.xml",
+    ],
+    'assets': {
+        'web.assets_frontend': [
+            'rental_deposit/static/src/js/rental_deposit.js',
+        ],
+    },
+    'application': True,
+    'license': 'OEEL-1',
+    "sequence": 1,
+}

rental/models/__init__.py

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

rental/models/product_template.py

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+from odoo import fields, models
+
+
+class ProductTemplate(models.Model):
+    _inherit = 'product.template'
+
+    required_deposit = fields.Boolean(default=False)
+    amount_deposit = fields.Float(string="Deposit Amount")

rental/models/res_company.py

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+from odoo import fields, models
+
+
+class ResCompany(models.Model):
+    _inherit = "res.company"
+
+    product_deposit = fields.Many2one('product.product', string="Product",
+                                      domain=[("rent_ok", "=", True)])

rental/models/res_config_settings.py

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

rental/models/sale_order_line.py

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+from odoo import fields, models, api
+
+
+class SaleOrderLine(models.Model):
+    _inherit = 'sale.order.line'
+
+    is_deposit_line = fields.Boolean(default=False)
+    deposit_link_id = fields.Many2one("sale.order.line", ondelete="cascade")
+
+    @api.model_create_multi
+    def create(self, vals_list):
+        lines = super().create(vals_list)
+
+        deposit_product = self.env.company.product_deposit
+        deposit_lines = []
+        for line in lines:
+            if (line.product_id == deposit_product) and line.product_id.product_tmpl_id.required_deposit:
+                deposit_price = line.product_id.product_tmpl_id.amount_deposit * line.product_uom_qty
+                deposit_lines.append({
+                    "is_deposit_line": True,
+                    "order_id": line.order_id.id,
+                    "product_id": deposit_product.id,
+                    "name": f"Deposit for {line.product_id.name}",
+                    "product_uom_qty": line.product_uom_qty,
+                    "price_unit": deposit_price,
+                    "deposit_link_id": line.id,
+                })
+        if deposit_lines:
+            super().create(deposit_lines)
+        return lines
+
+    def write(self, vals):
+        res = super().write(vals)
+        if "product_uom_qty" in vals:
+            for line in self:
+                if not line.is_deposit_line:
+                    deposit_line = self.search([
+                        ("order_id", "=", line.order_id.id),
+                        ("deposit_link_id", "=", line.id),
+                    ])
+                    if deposit_line:
+                        deposit_line.write({
+                            "product_uom_qty": vals["product_uom_qty"],
+                            "price_unit": line.product_template_id.amount_deposit,
+                        })
+        return res

rental/static/srs/js/rental_deposit.js

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+import publicWidget from "@web/legacy/js/public/public_widget";
+
+publicWidget.registry.WebsiteSale.include({
+    start: function () {
+        this._super.apply(this, arguments);
+        this.changeDepositAmount({ target: document.querySelector('input[name="add_qty"]') });
+    },
+
+    _onChangeAddQuantity: function (ev) {
+        this._super.apply(this, arguments);
+        this.changeDepositAmount(ev);
+    },
+
+    changeDepositAmount: function(ev){
+        const input = ev.target || document.querySelector('input[name="add_qty"]');
+        if (!input) return;
+        const qty = parseFloat(input.value || 1);
+        const depositSpan = document.getElementById('product_amount_deposit');
+        if (!depositSpan) return;
+
+        const baseDeposit = parseFloat(depositSpan.dataset.baseAmount || 0);
+        const currencySymbol = depositSpan.dataset.currencySymbol || '';
+        const totalDeposit = (baseDeposit * qty).toFixed(2);
+        depositSpan.textContent = `${currencySymbol} ${totalDeposit}`;
+    }
+});

rental/views/product_template_views.xml

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+<?xml version="1.0" encoding="UTF-8" ?>
+<odoo>
+    <record id="product_template_form_view_rental" model="ir.ui.view">
+        <field name="name">product.template.form.view.rental.inherit</field>
+        <field name="model">product.template</field>
+        <field name="inherit_id" ref="sale_renting.product_template_form_view_rental"/>
+        <field name="arch" type="xml">
+            <xpath expr="//page//group//field[@name='extra_daily']" position="after">
+                <field name="required_deposit"/>
+                <field name="amount_deposit" invisible="not required_deposit"/>
+            </xpath>
+        </field>
+    </record>
+</odoo>

rental/views/res_config_settings_views.xml

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+<?xml version="1.0" encoding="UTF-8" ?>
+<odoo>
+    <record id="res_config_settings_view_form" model="ir.ui.view">
+        <field name="name">res.config.settings.inherit.view.form</field>
+        <field name="model">res.config.settings</field>
+        <field name="inherit_id" ref="sale_renting.res_config_settings_view_form"/>
+        <field name="arch" type="xml">
+            <xpath expr="//div//div[@class='row mt8']" position="after">
+                <div class="row mt8">
+                    <label string="Deposit" for="product_deposit" class="col-lg-3 o_light_label"/>
+                    <field name="product_deposit" placeholder="Deposit on product"/>
+                </div>
+            </xpath>
+        </field>
+    </record>
+</odoo>

rental/views/templates.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<odoo>
+
+    <template id="rental_product_with_deposit_amount" inherit_id="website_sale_renting.rental_product"
+              name="Rental product with deposit amount">
+        <xpath expr="//div[@id='product_option_block']" position="after">
+            <div class="mt-3 d-flex justify-content-between" id="product_deposit_section">
+                <strong>Deposit Required:</strong>
+                <span id="product_amount_deposit"
+                      t-att-data-base-amount="product.amount_deposit"
+                      t-att-data-currency-symbol="website.company_id.currency_id.symbol">
+                    <t t-out="website.company_id.currency_id.symbol"/>
+                    <t t-out="product.amount_deposit"/>
+                </span>
+            </div>
+        </xpath>
+    </template>
+
+    <template id="cart_line_deposite_amount" inherit_id="website_sale.cart_lines" name="Deposite Amount  in Cart">
+        <xpath expr="//div[@name='website_sale_cart_line_quantity']" position="before">
+            <t t-set="show_qty" t-value="not line.is_deposit_line"/>
+        </xpath>
+        <xpath expr="//div[@name='o_wsale_cart_line_button_container']/a[hasclass('js_delete_product')]"
+               position="attributes">
+            <attribute name="t-attf-class">#{'d-none' if line.is_deposit_line else 'js_delete_product'}</attribute>
+        </xpath>
+        <xpath expr="//div[@name='o_wsale_cart_line_button_container']" position="before">
+            <t t-set="deposit_for" t-value="line.deposit_link_id or line"/>
+            <t t-if="line.is_deposit_line">
+                <div class="text-muted small mt-2">
+                    This deposit is for
+                    <span class="text-primary fw-semibold ms-1" t-esc="deposit_for.product_id.name"/>
+                </div>
+            </t>
+        </xpath>
+
+    </template>
+</odoo>