README.md

@@ -1,12 +1,12 @@
-# BTCPay Server payment gateway for Odoo 16, 17, 18 and 19
+# BTCPay Server payment gateway for Odoo 16, 17 and 18
 
-## Accept bitcoin payments on Odoo 16, 17, 18 and 19
+## Accept bitcoin payments on Odoo 16, 17 and 18
 This odoo addon allows you to accept bitcoin and Lightning Network (and other cryptocurrency) payments in your Odoo e-commerce store.  
 ![BTCPay Server Banner](https://raw.githubusercontent.com/btcpayserver/odoo/17.0/payment_btcpayserver/static/description/BTCPay-Odoo-17-featured.png)
 
 ## How to install
 
 Please find the installation instructions here:
-- [Odoo 18 + 19 documentation](https://github.com/btcpayserver/odoo/blob/19.0/payment_btcpayserver/README.md)
+- [Odoo 18 documentation](https://github.com/btcpayserver/odoo/blob/18.0/payment_btcpayserver/README.md)
 - [Odoo 17 documentation](https://github.com/btcpayserver/odoo/blob/17.0/payment_btcpayserver/README.md)
 - [Odoo 16 documentation](https://github.com/btcpayserver/odoo/blob/16.0/payment_btcpayserver/README.md)

payment_btcpayserver/__manifest__.py

@@ -25,7 +25,7 @@
     'author': 'BTCPay Server team and contributors',
     'website': 'https://github.com/btcpayserver/odoo',
     'category': 'Accounting/Payment Providers',
-    'version': '19.0.1.1',
+    'version': '19.0.1.0',
     'license': 'GPL-3',
     'currency': 'USD',
     'application': False,
@@ -39,10 +39,8 @@
         'data/payment_provider_data.xml',
     ],
     'images':  ['static/description/BTCPay-Odoo-17-featured.png'],
-    # The BTCPay client (legacy BitPay API) is vendored in models/libs and
-    # only requires 'ecdsa' (plus 'requests', shipped with Odoo).
     'external_dependencies': {
-        'python': ['ecdsa']
+        'python': ['btcpay-python']
     },
     'post_init_hook': 'post_init_hook',
     'uninstall_hook': 'uninstall_hook',

payment_btcpayserver/controllers/main.py

@@ -20,7 +20,9 @@
 # ******************************************************************************
 
 import json
+import pprint
 
+import werkzeug
 from werkzeug import urls
 
 from odoo import _, http
@@ -39,270 +41,85 @@ class BTCPayController(http.Controller):
     _notify_url = '/payment/btcpay/ipn'
     _return_url = '/payment/btcpay/return'
 
-    @staticmethod
+    @http.route(_checkout_url, type='http', auth='public', csrf=False, website=True)
-    def _btcpay_client(provider):
+    def checkout(self, **data):
-        return BTCPayClient(
-            host=provider.btcpay_location,
-            pem=provider.btcpay_privateKey,
-            tokens={provider.btcpay_facade: provider.btcpay_token},
-        )
 
-    @staticmethod
+        _logger.info("CHECKOUT: received data:\n%s", pprint.pformat(data))
-    def _find_transaction(reference):
+
-        return request.env['payment.transaction'].sudo().search([
+        # Look up the transaction by reference
+        reference = data.get('reference')
+        tx_sudo = request.env['payment.transaction'].sudo().search([
             ('reference', '=', reference),
             ('provider_code', '=', 'btcpayserver'),
         ], limit=1)
-
-    @staticmethod
-    def _lock_transaction(tx_sudo):
-        """Lock a transaction until the current database transaction ends.
-
-        Checkout and IPN requests can arrive concurrently. Serializing them on
-        the payment transaction prevents two checkout requests from creating
-        separate invoices and makes an IPN re-check the invoice ID after a
-        checkout replaces an expired invoice.
-        """
-        tx_sudo.ensure_one()
-        tx_sudo.flush_recordset()
-        tx_sudo.env.cr.execute(
-            "SELECT id FROM payment_transaction WHERE id = %s FOR UPDATE",
-            [tx_sudo.id],
-        )
-        tx_sudo.invalidate_recordset([
-            'state', 'btcpay_invoiceId', 'provider_reference',
-        ])
-
-    @staticmethod
-    def _ensure_invoice_id_is_unique(tx_sudo, invoice_id):
-        """Reject an invoice ID already linked to another transaction."""
-        other_tx = tx_sudo.env['payment.transaction'].sudo().search([
-            ('id', '!=', tx_sudo.id),
-            ('provider_code', '=', 'btcpayserver'),
-            '|',
-            ('btcpay_invoiceId', '=', invoice_id),
-            ('provider_reference', '=', invoice_id),
-        ], limit=1)
-        if other_tx:
-            raise ValidationError(_(
-                "BTCPay: The invoice is already linked to another transaction."
-            ))
-
-    @classmethod
-    def _validate_invoice_binding(
-            cls, tx_sudo, incoming_invoice_id, incoming_order_id, fetched_invoice):
-        """Bind the untrusted IPN payload to one authenticated invoice and transaction."""
-        if not isinstance(fetched_invoice, dict):
-            raise ValidationError(_("BTCPay: Received an invalid invoice response."))
-
-        fetched_invoice_id = fetched_invoice.get('id')
-        fetched_order_id = fetched_invoice.get('orderId')
-        if not (
-            incoming_invoice_id
-            and incoming_invoice_id == fetched_invoice_id
-            and incoming_invoice_id == tx_sudo.btcpay_invoiceId
-            and incoming_invoice_id == tx_sudo.provider_reference
-        ):
-            raise ValidationError(_(
-                "BTCPay: The notification invoice does not match the transaction."
-            ))
-        if not (
-            incoming_order_id
-            and incoming_order_id == fetched_order_id
-            and incoming_order_id == tx_sudo.reference
-        ):
-            raise ValidationError(_(
-                "BTCPay: The notification order does not match the transaction."
-            ))
-        cls._ensure_invoice_id_is_unique(tx_sudo, incoming_invoice_id)
-
-    @classmethod
-    def _find_transaction_by_invoice_id(cls, invoice_id):
-        """Find exactly one BTCPay transaction from its stored invoice ID."""
-        if not isinstance(invoice_id, str) or not invoice_id:
-            raise ValidationError(_("BTCPay: Missing invoice ID in notification data."))
-
-        txs_sudo = request.env['payment.transaction'].sudo().search([
-            ('provider_code', '=', 'btcpayserver'),
-            ('btcpay_invoiceId', '=', invoice_id),
-        ], limit=2)
-        if len(txs_sudo) != 1:
-            raise ValidationError(_(
-                "BTCPay: No unique transaction found matching the invoice ID."
-            ))
-        return txs_sudo
-
-    @staticmethod
-    def _validate_invoice_amount(tx_sudo, invoice):
-        """Reject reuse of an invoice with a different amount or currency."""
-        try:
-            amount = float(invoice.get('price'))
-        except (AttributeError, TypeError, ValueError):
-            amount = None
-        if (
-            amount is None
-            or invoice.get('currency') != tx_sudo.currency_id.name
-            or tx_sudo.currency_id.compare_amounts(amount, tx_sudo.amount) != 0
-        ):
-            raise ValidationError(_(
-                "BTCPay: The existing invoice amount or currency does not match the transaction."
-            ))
-
-    @classmethod
-    def _validate_existing_invoice(cls, tx_sudo, invoice_id, invoice):
-        """Validate a stored invoice before redirecting the customer to it."""
-        cls._validate_invoice_binding(
-            tx_sudo, invoice_id, tx_sudo.reference, invoice,
-        )
-        if not isinstance(invoice.get('status'), str) or not invoice['status']:
-            raise ValidationError(_("BTCPay: The existing invoice response is incomplete."))
-
-    @classmethod
-    def _validate_created_invoice(cls, tx_sudo, invoice):
-        """Validate a newly created invoice before storing its identity."""
-        if not isinstance(invoice, dict):
-            raise ValidationError(_("BTCPay: Received an invalid invoice response."))
-        invoice_id = invoice.get('id')
-        if (
-            not isinstance(invoice_id, str)
-            or not invoice_id
-            or not isinstance(invoice.get('url'), str)
-            or not invoice['url']
-            or invoice.get('orderId') not in (None, tx_sudo.reference)
-        ):
-            raise ValidationError(_("BTCPay: The created invoice response is incomplete."))
-        cls._ensure_invoice_id_is_unique(tx_sudo, invoice_id)
-
-    @http.route(_checkout_url, type='http', auth='public', methods=['POST'],
-                csrf=False, website=True)
-    def checkout(self, **data):
-        """ Create the BTCPay invoice and redirect the buyer to it.
-
-        The redirect form only carries the transaction reference. The invoice
-        price, currency and buyer details are read from the transaction
-        server-side and are never taken from the (client-controlled) request
-        data, so a buyer cannot have an invoice created for a tampered amount.
-        """
-        _logger.info("BTCPay: checkout request for transaction %s", data.get('reference'))
-        reference = data.get('reference')
-        tx_sudo = self._find_transaction(reference)
         if not tx_sudo:
             raise ValidationError(
-                _("BTCPay: No transaction found matching reference %s.", reference))
+                _("BTCPay: No transaction found matching reference %s.", reference)
-        self._lock_transaction(tx_sudo)
+            )
-        if tx_sudo.state != 'draft':
-            # Already processed (e.g. double submission): fall back to the
-            # generic payment status page.
-            return request.redirect('/payment/status')
 
         provider = tx_sudo.provider_id
-        base_url = provider.get_base_url()
+        notification_url = str(data.get('notify_url')).replace("http://", "https://")
-        client = self._btcpay_client(provider)
+        base_url = request.env['ir.config_parameter'].sudo().get_param('web.base.url')
+        redirect_url = urls.url_join(base_url, self._return_url)
+        client = BTCPayClient(host=provider.btcpay_location, pem=provider.btcpay_privateKey, tokens={provider.btcpay_facade: provider.btcpay_token})
+        invoice = client.create_invoice(
+            {"price": data.get('amount'),
+             "currency": data.get('currency_id'),
+             "orderId": data.get('reference'),
+             "token": provider.btcpay_token,
+             "redirectURL": redirect_url,
+             "notificationURL": notification_url,
+             "extendedNotifications": True,
+             "buyer": {"email": data.get('email') or 'noemailavailable@example.com',
+                       "name": data.get('name'),
+                       "address1": data.get('street'),
+                       "locality": data.get('city'),
+                       "postalCode": data.get('zip'),
+                       "country": data.get('country'),
+                       "notify": False}})
+        _logger.info('Invoice %s \n NOTIFY URL: %s', invoice, notification_url)
+        return werkzeug.utils.redirect(invoice['url'])
 
-        # A browser retry must not create a second payable invoice. Reuse the
+    @http.route(_notify_url, type='jsonrpc', auth='public', csrf=False)
-        # stored invoice while it remains payable. If it expired, the new ID is
-        # stored before the lock is released, so late notifications for the old
-        # invoice can no longer select this transaction.
-        if tx_sudo.btcpay_invoiceId:
-            existing_invoice = client.get_invoice(tx_sudo.btcpay_invoiceId)
-            self._validate_existing_invoice(
-                tx_sudo, tx_sudo.btcpay_invoiceId, existing_invoice,
-            )
-            if existing_invoice['status'].lower() != 'expired':
-                self._validate_invoice_amount(tx_sudo, existing_invoice)
-                if (
-                    not isinstance(existing_invoice.get('url'), str)
-                    or not existing_invoice['url']
-                ):
-                    raise ValidationError(_(
-                        "BTCPay: The existing invoice response is incomplete."
-                    ))
-                _logger.info(
-                    "BTCPay: reusing invoice %s for transaction %s",
-                    tx_sudo.btcpay_invoiceId, tx_sudo.reference,
-                )
-                return request.redirect(existing_invoice['url'], local=False)
-
-        invoice = client.create_invoice({
-            "price": tx_sudo.amount,
-            "currency": tx_sudo.currency_id.name,
-            "orderId": tx_sudo.reference,
-            "token": provider.btcpay_token,
-            "redirectURL": urls.url_join(base_url, self._return_url),
-            "notificationURL": urls.url_join(base_url, self._notify_url),
-            "extendedNotifications": True,
-            "buyer": {
-                "email": tx_sudo.partner_email or 'noemailavailable@example.com',
-                "name": tx_sudo.partner_name,
-                "address1": tx_sudo.partner_address,
-                "locality": tx_sudo.partner_city,
-                "postalCode": tx_sudo.partner_zip,
-                "country": tx_sudo.partner_country_id.code,
-                "notify": False,
-            },
-        })
-        self._validate_created_invoice(tx_sudo, invoice)
-        tx_sudo.write({
-            'btcpay_invoiceId': invoice['id'],
-            'provider_reference': invoice['id'],
-        })
-        _logger.info("BTCPay: created invoice %s for transaction %s",
-                     invoice['id'], tx_sudo.reference)
-        return request.redirect(invoice['url'], local=False)
-
-    @http.route(_notify_url, type='jsonrpc', auth='public', methods=['POST'], csrf=False)
     def btcpay_ipn(self, **post):
         """ BTCPay IPN. """
-        _logger.info('BTCPay: IPN received')
+        _logger.info('BTCPAY IPN RECEIVED...')
+        data = json.loads(request.httprequest.data)
+        _logger.info("%s", pprint.pformat(data))
         try:
-            data = json.loads(request.httprequest.data)
+            reference = data['data']['orderId']
-        except (json.JSONDecodeError, TypeError, UnicodeDecodeError):
+            invoice_id = data['data']['id']
-            _logger.warning("BTCPay: received malformed JSON notification data")
-            return ''
 
-        try:
+            # Look up the transaction by reference
-            ipn_data = data.get('data') if isinstance(data, dict) else None
+            tx_sudo = request.env['payment.transaction'].sudo().search([
-            if not isinstance(ipn_data, dict):
+                ('reference', '=', reference),
-                raise ValidationError(_("BTCPay: Invalid notification data."))
+                ('provider_code', '=', 'btcpayserver'),
-            incoming_invoice_id = ipn_data.get('id')
+            ], limit=1)
-            incoming_order_id = ipn_data.get('orderId')
+            if not tx_sudo:
+                _logger.warning("No transaction found matching reference %s.", reference)
+                return ''
 
-            # Never use the untrusted order ID to select a transaction. The
+            provider = tx_sudo.provider_id
-            # stored invoice ID is the lookup key.
+            client = BTCPayClient(host=provider.btcpay_location, pem=provider.btcpay_privateKey,
-            tx_sudo = self._find_transaction_by_invoice_id(incoming_invoice_id)
+                                  tokens={provider.btcpay_facade: provider.btcpay_token})
-            client = self._btcpay_client(tx_sudo.provider_id)
 
-            # Fetching through the authenticated API establishes the invoice's
+            fetched_invoice = client.get_invoice(invoice_id)
-            # current state. Lock afterwards and re-check the stored ID so a
+            _logger.info('fetched_invoice = %s', pprint.pformat(fetched_invoice))
-            # concurrent checkout cannot replace it between lookup and use.
-            fetched_invoice = client.get_invoice(incoming_invoice_id)
-            self._lock_transaction(tx_sudo)
-            self._validate_invoice_binding(
-                tx_sudo, incoming_invoice_id, incoming_order_id, fetched_invoice,
-            )
-            _logger.info(
-                "BTCPay: verified invoice %s with status %s for transaction %s",
-                fetched_invoice.get('id'), fetched_invoice.get('status'), tx_sudo.reference,
-            )
 
             payment_data = {
-                "reference": tx_sudo.reference,
+                "reference": fetched_invoice['orderId'],
-                "status": fetched_invoice.get('status'),
+                "status": fetched_invoice['status'],
-                "invoiceID": incoming_invoice_id,
+                "invoiceID": fetched_invoice['id'],
-                "txid": fetched_invoice.get('url'),
+                "txid": fetched_invoice['url'],
-                # Settled amount and currency, validated against the transaction
-                # by the payment framework before it is set done.
-                "amount": fetched_invoice.get('price'),
-                "currency": fetched_invoice.get('currency'),
             }
 
+            # Use the new Odoo 19 _process() pipeline
             tx_sudo._process('btcpayserver', payment_data)
-        except ValidationError as error:
+        except ValidationError:
-            _logger.warning("BTCPay: rejected notification: %s", error)
+            _logger.exception("Unable to handle the notification data; skipping to acknowledge")
         return ''
 
-    @http.route(_return_url, type='http', auth="public", methods=['GET'],
+    @http.route(_return_url, type='http', auth="public", methods=['GET'], csrf=False, save_session=False)
-                csrf=False, save_session=False)
     def btcpay_return_from_redirect(self, **data):
         """ BTCPay return """
         _logger.info("BTCPay: user returned to shop after payment")

payment_btcpayserver/models/payment_provider.py

@@ -1,4 +1,4 @@
-from odoo import api, fields, models
+from odoo import _, api, fields, models
 from .libs.client import BTCPayClient
 from .libs import crypto
 
@@ -21,9 +21,15 @@ class PaymentProvider(models.Model):
     btcpay_privateKey = fields.Text(string='Private Key', help='Private Key for BTCPay Client. Leave empty, will be autogenerated during pairing.')
     btcpay_facade = fields.Char(string='Facade', help='Token facade type: merchant/pos/payroll. Keep merchant', default='merchant')
 
+    def create(self, values_list):
+        if self.code == 'btcpayserver':
+            values_list['btcpay_privateKey'] = crypto.generate_privkey()
+
+        return super(PaymentProvider, self).create(values_list)
+
     @api.onchange('btcpay_pairingCode')
     def _onchange_pairingCode(self):
-        if not self.btcpay_token and self.code == 'btcpayserver' and self.btcpay_pairingCode:
+        if not self.btcpay_token and self.code == 'btcpayserver' and not self.btcpay_pairingCode == '':
             self.btcpay_privateKey = crypto.generate_privkey()
             client = BTCPayClient(host=self.btcpay_location, pem=self.btcpay_privateKey)
             token = client.pair_client(self.btcpay_pairingCode)

payment_btcpayserver/models/payment_transaction.py

@@ -1,8 +1,8 @@
 import pprint
 
 from odoo import _, api, fields, models
-from odoo.exceptions import ValidationError
 
+from odoo.addons.payment import utils as payment_utils
 from odoo.addons.payment.logging import get_payment_logger
 
 
@@ -15,15 +15,13 @@ class PaymentTransaction(models.Model):
     btcpay_invoiceId = fields.Char("Invoice Id")
     btcpay_txid = fields.Char("Transaction Id")
     btcpay_status = fields.Char("Transaction Status")
+    api_url = '/btcpay/checkout'
+    checkout_url = '/btcpay/checkout'
+    notify_url = 'payment/btcpay/ipn'
 
     def _get_specific_rendering_values(self, processing_values):
         """ Override of payment to return BTCPay-specific rendering values.
 
-        The redirect form only needs to carry the transaction reference: the
-        BTCPay invoice is built server-side (see the checkout controller) from
-        the transaction, so no amount, currency or buyer data is sent through
-        the browser.
-
         Note: self.ensure_one() from `_get_processing_values`
 
         :param dict processing_values: The generic and specific processing values of the transaction
@@ -31,16 +29,29 @@ class PaymentTransaction(models.Model):
         :rtype: dict
         """
         res = super()._get_specific_rendering_values(processing_values)
+
         if self.provider_code != 'btcpayserver':
             return res
 
+        base_url = self.provider_id.get_base_url()
+        partner_first_name, partner_last_name = payment_utils.split_partner_name(self.partner_name)
+
         return {
-            'api_url': '/btcpay/checkout',
+            'address1': self.partner_address,
-            'reference': self.reference,
+            'amount': self.amount,
-            # Keep the pre-19.0.1.1 key during rolling deployments. QWeb
+            'city': self.partner_city,
-            # templates live in the database, so an instance restarted before
+            'country': self.partner_country_id.code,
-            # the module is upgraded can still render the previous template.
+            'currency_code': self.currency_id.name,
+            'email': self.partner_email,
+            'first_name': partner_first_name,
+            'item_name': f"{self.company_id.name}: {self.reference}",
             'item_number': self.reference,
+            'last_name': partner_last_name,
+            'lc': self.partner_lang,
+            'state': self.partner_state_id.name,
+            'zip_code': self.partner_zip,
+            'api_url':  self.checkout_url,
+            'notify_url': base_url + self.notify_url,
         }
 
     @api.model
@@ -58,28 +69,19 @@ class PaymentTransaction(models.Model):
         return payment_data.get('reference')
 
     def _extract_amount_data(self, payment_data):
-        """ Override of payment to return the settled amount and currency.
+        """ Override of payment to skip amount validation for BTCPay.
 
-        The amount and currency are read back from BTCPay on notification and
+        BTCPay invoices handle amount validation on the BTCPay server side,
-        returned here so that the generic amount validation compares them
+        so we skip the Odoo-side validation.
-        against the transaction. This prevents a tampered or mismatched invoice
-        from confirming the transaction (and thus the order).
 
         :param dict payment_data: The payment data sent by the provider.
-        :return: The settled amount data, or ``None`` for other providers.
+        :return: None to skip validation.
-        :rtype: dict|None
+        :rtype: None
         """
         if self.provider_code != 'btcpayserver':
             return super()._extract_amount_data(payment_data)
 
-        try:
+        return None
-            amount = float(payment_data.get('amount'))
-        except (TypeError, ValueError):
-            amount = None
-        return {
-            'amount': amount,
-            'currency_code': payment_data.get('currency'),
-        }
 
     def _apply_updates(self, payment_data):
         """ Override of payment to process the transaction based on BTCPay data.
@@ -94,43 +96,23 @@ class PaymentTransaction(models.Model):
 
         _logger.info("BTCPay _apply_updates: %s", pprint.pformat(payment_data))
 
-        if not payment_data.get('reference'):
+        self.provider_reference = payment_data.get('reference')
-            raise ValidationError(
+        self.btcpay_txid = payment_data.get('txid')
-                "BTCPay: " + _("Received payment data with missing reference."))
+        self.btcpay_status = payment_data.get('status')
 
-        # Keep both external-reference fields bound to the authenticated
+        if self.btcpay_status in ['paid', 'processing']:
-        # BTCPay invoice. The controller validates this identity before
-        # entering `_process`.
-        if invoice_id := payment_data.get('invoiceID'):
-            self.btcpay_invoiceId = invoice_id
-            self.provider_reference = invoice_id
-        if payment_data.get('txid'):
-            self.btcpay_txid = payment_data['txid']
-        status = payment_data.get('status')
-        self.btcpay_status = status
-
-        if status in ('paid', 'processing'):
             self._set_pending(state_message=payment_data.get('pending_reason'))
-        elif status in ('confirmed', 'complete'):
+        elif self.btcpay_status in ['confirmed', 'complete']:
             self._set_done()
-        elif status == 'new':
+        elif self.btcpay_status in ['new']:
-            pass  # Invoice created on BTCPay, waiting for the buyer to pay.
+            self.btcpay_invoiceId = payment_data.get('invoiceID')
-        elif status in ('expired', 'cancel', 'cancelled'):
+        elif self.btcpay_status in ['cancel', 'cancelled']:
-            self._set_canceled(
+            self._set_canceled()
-                state_message="BTCPay: " + _("Invoice status: %s.", status))
+        elif self.btcpay_status in ['invalid']:
-        elif status == 'invalid':
+            _logger.info(
-            _logger.warning(
                 "Received data with invalid payment status (%s) for transaction with reference %s",
-                status, self.reference
+                self.btcpay_status, self.reference
             )
             self._set_error(
-                "BTCPay: " + _("Received data with invalid payment status: %s.", status)
+                "BTCPay: " + _("Received data with invalid payment status: %s", self.btcpay_status)
-            )
-        else:
-            _logger.warning(
-                "Received data with unknown payment status (%s) for transaction with reference %s",
-                status, self.reference
-            )
-            self._set_error(
-                "BTCPay: " + _("Received data with unknown payment status: %s.", status)
             )

payment_btcpayserver/requirements.txt

@@ -1 +1 @@
-ecdsa
+btcpay-python

payment_btcpayserver/views/payment_btcpayserver_templates.xml

@@ -1,14 +1,25 @@
 <?xml version="1.0" encoding="utf-8"?>
 <odoo>
 
-    <!-- The redirect form is auto-submitted by the payment framework. It only
-         carries the transaction reference; the BTCPay invoice is built
-         server-side from the transaction (amount and currency cannot be
-         tampered with from the browser). -->
     <template id="redirect_form">
         <form t-att-action="api_url" method="post">
-            <input type="hidden" name="reference" t-att-value="reference"/>
+            <input type="hidden" name="reference" t-att-value="item_number"/>
+            <input type="hidden" name="name" t-att-value="first_name"/>
+            <input type="hidden" name="email" t-att-value="email"/>
+            <input type="hidden" name="street" t-att-value="address1"/>
+            <input type="hidden" name="zip" t-att-value="zip_code"/>
+            <input type="hidden" name="city" t-att-value="city"/>
+            <input type="hidden" name="currency_id" t-att-value="currency_code"/>
+            <input type="hidden" name="country" t-att-value="country"/>
+            <input type="hidden" name="custom" t-att-value="item_name"/>
+            <input type="hidden" name="amount" t-att-value="amount"/>
+            <input type="hidden" name="notify_url" t-att-value="notify_url"/>
+            <button type="submit" width="100px" t-att-class="submit_class">
+                <img t-if="not submit_txt" src="/static/description/icon.png"/>
+                <span t-if="submit_txt"> <t t-esc="submit_txt"/> <span class="fa fa-long-arrow-right"/>
+                </span>
+            </button>
         </form>
     </template>
 
-</odoo>
+</odoo>