From 5e595e9f2b03a4ebc721ce50e3908d9f50d89080 Mon Sep 17 00:00:00 2001
From: Raman Marikanti <raman.marikanti@ftprotech.com>
Date: Fri, 12 Dec 2025 12:15:57 +0530
Subject: [PATCH] fix -ve stock issue

---
 .../costing_mrp_bom/models/__init__.py        |   3 +-
 custom_addons/costing_mrp_bom/models/mrp.py   |   4 +-
 .../costing_mrp_bom/models/sale_order_line.py |  25 ++-
 .../costing_mrp_bom/models/stock_quant.py     |  39 ++++
 .../report/samashti_invoice_print.xml         | 176 ++++++++++++++++++
 .../costing_mrp_bom/views/bom_view.xml        |   6 +-
 6 files changed, 247 insertions(+), 6 deletions(-)
 create mode 100644 custom_addons/costing_mrp_bom/models/stock_quant.py
 create mode 100644 custom_addons/costing_mrp_bom/report/samashti_invoice_print.xml

diff --git a/custom_addons/costing_mrp_bom/models/__init__.py b/custom_addons/costing_mrp_bom/models/__init__.py
index d060c996b..2648ee3d2 100644
--- a/custom_addons/costing_mrp_bom/models/__init__.py
+++ b/custom_addons/costing_mrp_bom/models/__init__.py
@@ -1,2 +1,3 @@
 from . import mrp
-from . import sale_order_line
\ No newline at end of file
+from . import sale_order_line
+from . import stock_quant
\ No newline at end of file
diff --git a/custom_addons/costing_mrp_bom/models/mrp.py b/custom_addons/costing_mrp_bom/models/mrp.py
index af4c5ab1e..99dbe8ff0 100644
--- a/custom_addons/costing_mrp_bom/models/mrp.py
+++ b/custom_addons/costing_mrp_bom/models/mrp.py
@@ -4,8 +4,8 @@ from ast import literal_eval
 from collections import defaultdict
 
 from odoo import fields, models, _, api
-from odoo.tools import float_round
-from odoo.exceptions import ValidationError
+from odoo.tools import float_round, float_compare
+from odoo.exceptions import ValidationError, UserError
 
 
 class MrpProduction(models.Model):
diff --git a/custom_addons/costing_mrp_bom/models/sale_order_line.py b/custom_addons/costing_mrp_bom/models/sale_order_line.py
index d5f262f86..60d6c99fb 100644
--- a/custom_addons/costing_mrp_bom/models/sale_order_line.py
+++ b/custom_addons/costing_mrp_bom/models/sale_order_line.py
@@ -68,11 +68,19 @@ class SaleOrderLine(models.Model):
         digits='Product Price', store=True, readonly=False, precompute=True,
         groups="base.group_user")
 
-    @api.depends('product_id', 'company_id', 'product_uom','product_uom_qty')
+    price_unit_kg = fields.Float(string="Rate(kg)")
+
+    @api.depends('product_uom_qty')
     def _compute_bag_weight(self):
         for line in self:
             line.bag_weight = line.product_id.weight * line.product_uom_qty
 
+    @api.onchange('bag_weight')
+    def _onchange_bag_update_qty(self):
+        for line in self:
+            if line.product_id and line.product_id.weight:
+                line.product_uom_qty = line.bag_weight / line.product_id.weight
+
 
     @api.depends('product_id', 'company_id', 'currency_id', 'product_uom')
     def _compute_purchase_price(self):
@@ -100,4 +108,19 @@ class SaleOrderLine(models.Model):
             if line.order_id and line.order_id.state == 'sale':
                 continue
             line.price_unit = 0.0
+
+    # @api.onchange('price_unit', 'price_unit_kg', 'bag_weight')
+    # def _onchange_prices(self):
+    #     for line in self:
+    #         if not line.bag_weight:
+    #             line.price_unit_kg = 0.0
+    #             return
+    #
+    #         # If price_unit is changed by user → update price_unit_kg
+    #         if line.price_unit and not self._origin.price_unit == line.price_unit:
+    #             line.price_unit_kg = line.price_unit / line.bag_weight
+    #
+    #         # If price_unit_kg is changed by user → update price_unit
+    #         elif line.price_unit_kg and not self._origin.price_unit_kg == line.price_unit_kg:
+    #             line.price_unit = line.price_unit_kg * line.bag_weight
             
diff --git a/custom_addons/costing_mrp_bom/models/stock_quant.py b/custom_addons/costing_mrp_bom/models/stock_quant.py
new file mode 100644
index 000000000..299ff8dc6
--- /dev/null
+++ b/custom_addons/costing_mrp_bom/models/stock_quant.py
@@ -0,0 +1,39 @@
+from odoo import fields, models, _, api
+from odoo.tools import float_round, float_compare
+from odoo.exceptions import ValidationError, UserError
+
+
+class StockQuant(models.Model):
+    _inherit = "stock.quant"
+
+    @api.constrains("product_id", "quantity")
+    def check_negative_qty(self):
+        if self.env.context.get("skip_negative_qty_check"):
+            return
+        p = self.env["decimal.precision"].precision_get("Product Unit of Measure")
+
+
+        for quant in self:
+            if (
+                float_compare(quant.quantity, 0, precision_digits=p) == -1
+                and quant.product_id.type == "consu"
+                and quant.location_id.usage in ["internal", "transit"]
+            ):
+                msg_add = ""
+                if quant.lot_id:
+                    msg_add = _(" lot {}").format(quant.lot_id.name_get()[0][1])
+                raise ValidationError(
+                    _(
+                        "You cannot validate this stock operation because the "
+                        "stock level of the product '{name}'{name_lot} would "
+                        "become negative "
+                        "({q_quantity}) on the stock location '{complete_name}' "
+                        "and negative stock is "
+                        "not allowed for this product and/or location."
+                    ).format(
+                        name=quant.product_id.display_name,
+                        name_lot=msg_add,
+                        q_quantity=quant.quantity,
+                        complete_name=quant.location_id.complete_name,
+                    )
+                )
\ No newline at end of file
diff --git a/custom_addons/costing_mrp_bom/report/samashti_invoice_print.xml b/custom_addons/costing_mrp_bom/report/samashti_invoice_print.xml
new file mode 100644
index 000000000..e488d2f6b
--- /dev/null
+++ b/custom_addons/costing_mrp_bom/report/samashti_invoice_print.xml
@@ -0,0 +1,176 @@
+<?xml version="1.0" encoding="utf-8"?>
+<odoo>
+
+
+    <template id="samashti_tax_invoice_report">
+        <t t-call="web.html_container">
+            <t t-foreach="docs" t-as="o">
+                <t t-set="company" t-value="o.env.company"/>
+                <t t-call="costing_mrp_bom.samashti_tax_invoice_report_custom" />
+            </t>
+        </t>
+    </template>
+
+    <template id="samashti_tax_invoice_report_custom">
+        <t t-call="web.external_layout_striped">
+            <div class="page-border" style="border:1px solid #000; padding:15px; margin-bottom:20px; font-family: Arial, sans-serif; font-size:12px;">
+                <div style="text-align:center; border-bottom:1px solid #000; padding-bottom:5px; margin-bottom:10px;">
+                    <h4><strong>Tax Invoice: </strong><t t-esc="o.name"/> </h4>
+                </div>
+                <div class="row" style="font-size:12px">
+                    <div  style="margin:3px;" class="col-4">
+                        <strong style="font-size:14px;">Customer Info</strong><br/>
+                        <t t-esc="o.partner_id.contact_address"/><br/>
+                        <strong>GSTIN:</strong> <t t-esc="o.partner_id.vat"/> <br/>
+                        <strong>State:</strong> <t t-esc="o.partner_id.state_id.name"/>
+                    </div>
+                    <div  style="margin:3px;" class="col-4">
+                        <strong style="font-size:14px">Shipping Info</strong><br/>
+                        <t t-esc="o.partner_shipping_id.contact_address"/><br/>
+                        <strong>GSTIN:</strong> <t t-esc="o.partner_shipping_id.vat"/> <br/>
+                        <strong>State:</strong> <t t-esc="o.partner_shipping_id.state_id.name"/>
+                    </div>
+                    <div style="margin:3px;" class="col-4">
+                        <strong>Invoice No:</strong> <t t-esc="o.name"/><br/>
+                        <strong>Date:</strong> <t t-esc="o.invoice_date"/><br/>
+                        <strong>Terms and Conditions:</strong><t t-esc="o.narration"/>
+                    </div>
+                </div>
+
+                <!-- Product / Item Table -->
+    <div style="min-height:400px; height:auto;">
+        <table style="width:100%; font-size:12px; border-collapse:collapse;">
+            <thead>
+                <tr style="border-bottom:1px solid #000;">
+                    <th style="border:1px solid #000; padding:5px;">S.No</th>
+                    <th style="border:1px solid #000; padding:5px;">Description</th>
+                    <th style="border:1px solid #000; padding:5px;">HSN/SAC</th>
+                    <th style="border:1px solid #000; padding:5px;">GST Rate</th>
+                    <th style="border:1px solid #000; padding:5px;">Qty</th>
+                    <th style="border:1px solid #000; padding:5px;">Rate</th>
+                    <th style="border:1px solid #000; padding:5px;">Amount</th>
+                </tr>
+            </thead>
+
+            <tbody>
+                <t t-set="n" t-value="0"/>
+                <t t-foreach="o.invoice_line_ids" t-as="line">
+                    <t t-set="n" t-value="n+1"/>
+                    <tr>
+                        <td style="border:1px solid #000; padding:5px; text-align:center;"><t t-esc="n"/></td>
+                        <td style="border:1px solid #000; padding:5px;"><t t-esc="line.name"/></td>
+                        <td style="border:1px solid #000; padding:5px; text-align:center;"><t t-esc="line.product_id.l10n_in_hsn_code"/></td>
+                        <td style="border:1px solid:#000; padding:5px; text-align:center;"><t t-esc="line.tax_ids.name"/></td>
+                        <td style="border:1px solid:#000; padding:5px; text-align:right;"><t t-esc="line.quantity"/></td>
+                        <td style="border:1px solid:#000; padding:5px; text-align:right;"><t t-esc="line.price_unit"/></td>
+                        <td style="border:1px solid:#000; padding:5px; text-align:right;"><t t-esc="line.price_subtotal"/></td>
+                    </tr>
+                </t>
+            </tbody>
+        </table>
+    </div>
+
+<!--                 Totals & Tax-->
+                <div style="width:100%; margin-top:10px; font-size:13px;text-align:right;">
+                   <strong style="text-align:right; padding-right:10px;">Subtotal: </strong><t style="text-align:right; width:100px;" t-esc="o.amount_untaxed"/><br/>
+                   <strong style="text-align:right; padding-right:10px;">Tax: </strong><t style="text-align:right; width:100px;" t-esc="o.amount_tax"/><br/>
+                   <strong style="text-align:right; padding-right:10px;">Total: </strong><t style="text-align:right; width:100px;" t-esc="o.amount_total"/>
+                </div>
+
+
+
+                <!-- Footer / Terms -->
+                <div style="margin-top:15px; font-size:12px; border-top:1px solid #000; padding-top:5px;">
+                    <div class="mb-2" style="text-align:left;">
+                        <p class="text-end lh-sm" t-if="o.company_id.display_invoice_amount_total_words" style="text-align:left;">
+                            Total amount in words: <br/>
+                            <small class="text-dark lh-sm"><span style="text-align:left;" t-field="o.amount_total_words"></span></small>
+                        </p>
+                    </div>
+
+                    <t t-if="o.company_id.account_fiscal_country_id.code == 'IN'">
+                <t t-set="hsn_summary" t-value="o._l10n_in_get_hsn_summary_table()"/>
+                <t t-if="hsn_summary">
+                    <div name="l10n_in_hsn_summary" class="mt-3" style="page-break-inside: avoid;">
+                        <h5>HSN Summary</h5>
+                        <table class="table table-sm table-borderless col-6">
+                            <thead>
+                                <th>HSN/SAC</th>
+                                <th class="text-end">Quantity</th>
+                                <th class="text-end">Rate %</th>
+                                <th class="text-end">Taxable Value</th>
+                                <th class="text-end" t-if="hsn_summary['has_gst']">SGST</th>
+                                <th class="text-end" t-if="hsn_summary['has_gst']">CGST</th>
+                                <th class="text-end" t-if="hsn_summary['has_igst']">IGST</th>
+                                <th class="text-end" t-if="hsn_summary['has_cess']">CESS</th>
+
+                            </thead>
+                            <tr t-foreach="hsn_summary['items']" t-as="item">
+                                <td t-esc="item['l10n_in_hsn_code']"/>
+                                <td class="text-end">
+                                    <span t-esc="item['quantity']"/>
+                                    <span t-if="hsn_summary['display_uom']">(<t t-esc="item['uom_name']"/>)</span>
+                                </td>
+                                <td class="text-end" t-esc="item['rate']"/>
+                                <td class="text-end">
+                                    <span t-esc="item['amount_untaxed']" t-options="{'widget': 'monetary', 'display_currency': o.currency_id}"/>
+                                </td>
+                                <td class="text-end" t-if="hsn_summary['has_gst']">
+                                    <span t-esc="item['tax_amount_sgst']" t-options="{'widget': 'monetary', 'display_currency': o.currency_id}"/>
+                                </td>
+                                <td class="text-end" t-if="hsn_summary['has_gst']">
+                                    <span t-esc="item['tax_amount_cgst']" t-options="{'widget': 'monetary', 'display_currency': o.currency_id}"/>
+                                </td>
+                                <td class="text-end" t-if="hsn_summary['has_igst']">
+                                    <span t-esc="item['tax_amount_igst']" t-options="{'widget': 'monetary', 'display_currency': o.currency_id}"/>
+                                </td>
+                                <td class="text-end" t-if="hsn_summary['has_cess']">
+                                    <span t-esc="item['tax_amount_cess']" t-options="{'widget': 'monetary', 'display_currency': o.currency_id}"/>
+                                </td>
+                            </tr>
+                        </table>
+                    </div>
+                </t>
+            </t>
+
+
+                </div>
+                    <t t-name="custom_invoice_bank_details">
+    <div class="footer-section">
+
+        <table style="width:100%; border-collapse: collapse;">
+            <!-- Bank Details -->
+            <tr>
+                <td style="padding: 5px; vertical-align: top; width: 30%;"><strong>Bank Details:</strong></td>
+                <td style="padding: 5px; vertical-align: top;">
+                    Bank Name: <span t-field="o.company_id.bank_ids[0].bank_id.name"/><br/>
+                    Account No: <span t-field="o.company_id.bank_ids[0].acc_number"/><br/>
+                    IFSC: <span t-field="o.company_id.bank_ids[0].bank_id.bic"/>
+                </td>
+            </tr>
+
+            <!-- Declaration -->
+            <tr>
+                <td style="padding: 5px; vertical-align: top;"><strong>Declaration:</strong></td>
+                <td style="padding: 5px; vertical-align: top;">
+                    Goods once sold will not be taken back. All disputes are subject to jurisdiction XYZ.
+                </td>
+            </tr>
+
+            <!-- Authorised Signatory -->
+            <tr>
+                <td style="padding: 5px; vertical-align: top;"><strong>Authorised Signatory:</strong></td>
+                <td style="padding: 5px; vertical-align: top;">
+                    ______________________________ <br/>
+                    <span>Name &amp; Designation</span>
+                </td>
+            </tr>
+        </table>
+
+    </div>
+</t>
+
+            </div>
+        </t>
+    </template>
+</odoo>
\ No newline at end of file
diff --git a/custom_addons/costing_mrp_bom/views/bom_view.xml b/custom_addons/costing_mrp_bom/views/bom_view.xml
index f847d8e21..d4b03fd33 100644
--- a/custom_addons/costing_mrp_bom/views/bom_view.xml
+++ b/custom_addons/costing_mrp_bom/views/bom_view.xml
@@ -21,9 +21,11 @@
                 <field name="model">sale.order</field>
                 <field name="inherit_id" ref="sale.view_order_form"/>
                 <field name="arch" type="xml">
-                    <xpath expr="//field[@name='order_line']/list//field[@name='price_unit']" position="after">
+                    <xpath expr="//field[@name='order_line']/list//field[@name='price_unit']" position="replace">
+                        <field name="price_unit" string="Rate(bags)"/>
+<!--                        <field name="price_unit_kg" string="Rate(kg)"/>-->
                         <field name="purchase_price" groups="base.group_user" force_save="1" readonly="1"/>
-                        <field name="bag_weight" groups="base.group_user"/>
+                        <field name="bag_weight" groups="base.group_user" sum="Total"/>
                     </xpath>
                     <xpath expr="//field[@name='tax_totals']" position="before">
                         <div class="d-flex float-end" colspan="2" groups="base.group_user">