purchase_usability: up-port button "Delete lines qty=0" from v10

purchase_usability/__manifest__.py

@@ -14,6 +14,7 @@
     'data': [
         'views/purchase_order.xml',
         'views/purchase_report.xml',
+        'views/account_move.xml',
         ],
     'installable': True,
 }

purchase_usability/models/__init__.py

@@ -1,3 +1,4 @@
 from . import purchase_order
 from . import product_template
 from . import res_partner
+from . import account_move

purchase_usability/models/account_move.py

@@ -0,0 +1,21 @@
+# Copyright 2022 Akretion France (http://www.akretion.com/)
+# @author: Alexis de Lattre <alexis.delattre@akretion.com>
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+from odoo import models
+
+
+class AccountMove(models.Model):
+    _inherit = 'account.move'
+
+    def delete_lines_qty_zero(self):
+        # When a user pulls a PO from a supplier invoice, it creates
+        # all lines including lines that haven't been received. It can be time-consuming
+        # to delete all these lines with qty = 0
+        self.ensure_one()
+        lines = self.env['account.move.line'].search([
+            ('move_id', '=', self.id),
+            ('quantity', '=', 0),
+            ('display_type', '=', False),
+            ])
+        lines.unlink()

purchase_usability/views/account_move.xml

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  Copyright 2022 Akretion France (http://www.akretion.com/)
+  @author: Alexis de Lattre <alexis.delattre@akretion.com>
+  License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+-->
+
+<odoo>
+
+
+<record id="view_move_form" model="ir.ui.view">
+    <field name="model">account.move</field>
+    <field name="inherit_id" ref="purchase.view_move_form_inherit_purchase"/>
+    <field name="arch" type="xml">
+        <button name="button_draft" position="after">
+            <button name="delete_lines_qty_zero" attrs="{'invisible': ['|', ('state', '!=', 'draft'), ('move_type', '!=', 'in_invoice')]}" string="Delete Lines Qty=0" type="object"/>
+        </button>
+    </field>
+</record>
+
+
+</odoo>