[ADD] product_pricelist: Book price added in Sale Order Line

product_pricelist/__init__.py

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+from . import models

product_pricelist/__manifest__.py

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+{
+    'name': "Book Price (Pricelist Price)",
+    'version': '1.0',
+    'depends': ['sale_management'],
+    'author': "ppch",
+    'category': 'Category',
+    'description': """
+    Book Price (Pricelist Price) on sales order lines and invoice lines
+    which will be used to compare between Book Price (Pricelist Price) and
+    manually adjusted price on the lines.
+    """,
+    'license': "LGPL-3",
+    'data': [
+        'views/sale_order_line_views.xml',
+        'views/account_move_line_views.xml',
+    ],
+    'installable': True,
+}

product_pricelist/models/__init__.py

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+from . import account_move_line
+from . import sale_order_line

product_pricelist/models/account_move_line.py

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+from odoo import api, fields, models
+
+
+class AccountMoveLine(models.Model):
+    _inherit = "account.move.line"
+
+    book_price = fields.Float(related='sale_line_ids.book_price')

product_pricelist/models/sale_order_line.py

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+from odoo import api, fields, models
+
+
+class SaleOrderLine(models.Model):
+    _inherit = "sale.order.line"
+
+    book_price = fields.Float(string="Book Price", compute='_compute_book_price')
+
+    @api.depends('product_id', 'product_uom_qty', 'order_id.pricelist_id')
+    def _compute_book_price(self):
+        for record in self:
+            if not record.product_id:
+                record.book_price = 0.0
+                continue
+
+            pricelist = record.order_id.pricelist_id if record.order_id else None
+            if pricelist:
+                record.book_price = pricelist._get_product_price(
+                    record.product_id, record.product_uom_qty
+                )
+            else:
+                record.book_price = record.product_id.lst_price

product_pricelist/views/account_move_line_views.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<odoo>
+    <record id="account_move_form_inherit_book_price" model="ir.ui.view">
+        <field name="name">account.move.form.inherite.book.price</field>
+        <field name="model">account.move</field>
+        <field name="inherit_id" ref="account.view_move_form"/>
+        <field name="arch" type="xml">
+            <xpath expr="//notebook//page//field[@name='invoice_line_ids']//list//field[@name='quantity']" position="before">
+                <field name="book_price" readonly="True" column_invisible="context.get('default_move_type') != 'out_invoice'"/>
+            </xpath>
+        </field>
+    </record>
+</odoo>

product_pricelist/views/sale_order_line_views.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<odoo>
+    <record id="sale_order_form_inherit_book_price" model="ir.ui.view">
+        <field name="name">sale.order.form.inherite.book.price</field>
+        <field name="model">sale.order</field>
+        <field name="inherit_id" ref="sale.view_order_form"/>
+        <field name="arch" type="xml">
+            <xpath expr="//notebook//page//list//field[@name='product_uom_qty']" position="before">
+                <field name="book_price" readonly="True"/>
+            </xpath>
+        </field>
+    </record>
+</odoo>