[17.0][ADD] Added a pos_multi_order_payment flow.

pos_multi_order_payment/README.rst

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+=======================
+Pos Multi Order Payment
+=======================
+
+.. 
+   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+   !! This file is generated by oca-gen-addon-readme !!
+   !! changes will be overwritten.                   !!
+   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+   !! source digest: sha256:2d6a9f4e4e0ec916213578a59191c52d01f96c495d945338df8ce58f6da3194d
+   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+.. |badge1| image:: https://img.shields.io/badge/maturity-Beta-yellow.png
+    :target: https://odoo-community.org/page/development-status
+    :alt: Beta
+.. |badge2| image:: https://img.shields.io/badge/licence-AGPL--3-blue.png
+    :target: http://www.gnu.org/licenses/agpl-3.0-standalone.html
+    :alt: License: AGPL-3
+.. |badge3| image:: https://img.shields.io/badge/github-OCA%2Fpos-lightgray.png?logo=github
+    :target: https://github.com/OCA/pos/tree/17.0/pos_multi_order_payment
+    :alt: OCA/pos
+.. |badge4| image:: https://img.shields.io/badge/weblate-Translate%20me-F47D42.png
+    :target: https://translation.odoo-community.org/projects/pos-17-0/pos-17-0-pos_multi_order_payment
+    :alt: Translate me on Weblate
+.. |badge5| image:: https://img.shields.io/badge/runboat-Try%20me-875A7B.png
+    :target: https://runboat.odoo-community.org/builds?repo=OCA/pos&target_branch=17.0
+    :alt: Try me on Runboat
+
+|badge1| |badge2| |badge3| |badge4| |badge5|
+
+This module will allow you to pay several open point of sale orders at
+the same time.
+
+The principal order will return the other orders amount and the other
+orders will be payed with this amount.
+
+**Table of contents**
+
+.. contents::
+   :local:
+
+Bug Tracker
+===========
+
+Bugs are tracked on `GitHub Issues <https://github.com/OCA/pos/issues>`_.
+In case of trouble, please check there if your issue has already been reported.
+If you spotted it first, help us to smash it by providing a detailed and welcomed
+`feedback <https://github.com/OCA/pos/issues/new?body=module:%20pos_multi_order_payment%0Aversion:%2017.0%0A%0A**Steps%20to%20reproduce**%0A-%20...%0A%0A**Current%20behavior**%0A%0A**Expected%20behavior**>`_.
+
+Do not contact contributors directly about support or help with technical issues.
+
+Credits
+=======
+
+Authors
+-------
+
+* Dixmit
+* INVITU
+
+Contributors
+------------
+
+- Enric Tobella
+- ``SerpentCS <https://www.serpentcs.com>``:
+
+  - Kamla Dodiya kamla.d.serpentcs@gmail.com
+
+Maintainers
+-----------
+
+This module is maintained by the OCA.
+
+.. image:: https://odoo-community.org/logo.png
+   :alt: Odoo Community Association
+   :target: https://odoo-community.org
+
+OCA, or the Odoo Community Association, is a nonprofit organization whose
+mission is to support the collaborative development of Odoo features and
+promote its widespread use.
+
+This module is part of the `OCA/pos <https://github.com/OCA/pos/tree/17.0/pos_multi_order_payment>`_ project on GitHub.
+
+You are welcome to contribute. To learn how please visit https://odoo-community.org/page/Contribute.

pos_multi_order_payment/__init__.py

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+from . import models

pos_multi_order_payment/__manifest__.py

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+# Copyright 2023 Dixmit
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+{
+    "name": "Pos Multi Order Payment",
+    "summary": """
+        Allow to pay multiple orders with the same payment""",
+    "version": "17.0.1.0.0",
+    "license": "AGPL-3",
+    "author": "Dixmit,INVITU,Odoo Community Association (OCA)",
+    "website": "https://github.com/OCA/pos",
+    "depends": ["point_of_sale"],
+    "assets": {
+        "point_of_sale._assets_pos": [
+            "pos_multi_order_payment/static/src/app/screens/payment_screen/payment_screen.esm.js",
+            "pos_multi_order_payment/static/src/app/screens/payment_screen/payment_screen.xml",
+            "pos_multi_order_payment/static/src/app/screens/receipt_screen/receipt_screen.esm.js",
+            "pos_multi_order_payment/static/src/app/screens/receipt_screen/receipt_screen.xml",
+            "pos_multi_order_payment/static/src/app/models.esm.js",
+        ],
+    },
+    "data": [],
+    "demo": [],
+}

pos_multi_order_payment/models/__init__.py

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+from . import pos_order

pos_multi_order_payment/models/pos_order.py

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+# Copyright 2023 Dixmit
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+from odoo import _, fields, models
+from odoo.exceptions import UserError
+from odoo.tools import float_is_zero
+
+
+class PosOrder(models.Model):
+    _inherit = "pos.order"
+
+    payment_order_id = fields.Many2one("pos.order", readonly=True)
+
+    def _export_for_ui(self, order):
+        result = super()._export_for_ui(order)
+        result["payment_order_id"] = order.payment_order_id.id
+        return result
+
+    def _process_payment_lines(self, pos_order, order, pos_session, draft):
+        rec = super()._process_payment_lines(pos_order, order, pos_session, draft)
+        prec_acc = order.currency_id.decimal_places
+        if (
+            not draft
+            and float_is_zero(order.amount_paid, prec_acc)
+            and pos_order.get("payment_order_id")
+        ):
+            order.write({"payment_order_id": pos_order["payment_order_id"]})
+            cash_payment_method = pos_session.payment_method_ids.filtered(
+                "is_cash_count"
+            )[:1]
+            if not cash_payment_method:
+                raise UserError(
+                    _(
+                        """No cash statement found for this session.
+Unable to record a multiple order payment."""
+                    )
+                )
+            return_payment_vals = {
+                "name": _("Multi order payment"),
+                "pos_order_id": order.id,
+                "amount": order.amount_total,
+                "payment_date": fields.Datetime.now(),
+                "payment_method_id": cash_payment_method.id,
+            }
+            order.add_payment(return_payment_vals)
+        return rec

pos_multi_order_payment/pyproject.toml

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+[build-system]
+requires = ["whool"]
+build-backend = "whool.buildapi"

pos_multi_order_payment/readme/CONTRIBUTORS.md

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+  - Enric Tobella
+  - `SerpentCS <https://www.serpentcs.com>`:
+    - Kamla Dodiya <kamla.d.serpentcs@gmail.com>

pos_multi_order_payment/readme/DESCRIPTION.md

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+This module will allow you to pay several open point of sale orders at the same time.
+
+The principal order will return the other orders amount and the other orders will be payed with this amount.