first commit

.gitignore

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+__pycache__/
+*.pyc
+*.pyo
+*.pyd
+.DS_Store

README.md

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+Purchase Create Bill Button
+===========================
+
+This module restores the Odoo 17 behavior on the Purchase Order form view:
+
+* Adds "Create Bill" buttons in the header of the Purchase Order form view.
+* Ensures the "Vendor Bills" smart button is visible even when there are no associated bills yet.
+
+Features
+--------
+
+* Adds a primary "Create Bill" button (highlighted) when there are items ready to be billed.
+* Adds a secondary "Create Bill" button when there are no items to bill yet (allowing manual billing).
+* Shows the "Vendor Bills" smart button as soon as the purchase order is confirmed.
+
+Usage
+-----
+
+Install the module. Navigate to Purchase -> Orders -> Purchase Orders. Confirmed purchase orders will now feature the "Create Bill" buttons, and the smart button for "Vendor Bills" will be visible.

__init__.py

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+# -*- coding: utf-8 -*-

__manifest__.py

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+{
+    'name': 'Purchase Create Bill Button',
+    'version': '19.0.1.0.0',
+    'category': 'Inventory/Purchase',
+    'summary': 'Add Create Bill buttons and restore smart button visibility on Purchase Order form view like Odoo 17',
+    'description': """
+Purchase Create Bill Button
+===========================
+This module restores the Odoo 17 behaviors:
+1. Adds "Create Bill" buttons in the header of the Purchase Order form view.
+2. Ensures the "Vendor Bills" smart button is visible even when there are no associated bills yet.
+    """,
+    'author': 'Suherdy Yacob',
+    'depends': ['purchase'],
+    'data': [
+        'views/purchase_order_views.xml',
+    ],
+    'installable': True,
+    'application': False,
+    'auto_install': False,
+    'license': 'LGPL-3',
+}

views/purchase_order_views.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<odoo>
+    <record id="purchase_order_form_inherit" model="ir.ui.view">
+        <field name="name">purchase.order.form.inherit.create.bill</field>
+        <field name="model">purchase.order</field>
+        <field name="inherit_id" ref="purchase.purchase_order_form"/>
+        <field name="arch" type="xml">
+            <!-- Add Create Bill buttons in header after the file uploader widget -->
+            <xpath expr="//widget[@name='purchase_file_uploader']" position="after">
+                <button name="action_create_invoice" string="Create Bill" type="object" class="oe_highlight" context="{'create_bill':True}" invisible="state != 'purchase' or invoice_status != 'to invoice'" data-hotkey="w"/>
+                <button name="action_create_invoice" string="Create Bill" type="object" context="{'create_bill':True}" invisible="state != 'purchase' or invoice_status != 'no'" data-hotkey="w"/>
+            </xpath>
+
+            <!-- Modify the Vendor Bills smart button to be visible even if invoice_count is 0 -->
+            <xpath expr="//button[@name='action_view_invoice']" position="attributes">
+                <attribute name="invisible">state in ('draft', 'sent', 'to approve')</attribute>
+            </xpath>
+        </field>
+    </record>
+</odoo>