Fix currency for stripe payments

metabrainz/payments/forms.py

@@ -2,6 +2,7 @@
 from flask_babel import lazy_gettext
 from wtforms import StringField, BooleanField
 from wtforms.fields import RadioField, DecimalField, IntegerField
+from wtforms.fields.simple import HiddenField
 from wtforms.validators import DataRequired
 from metabrainz.payments import Currency
 
@@ -27,4 +28,5 @@ class DonationForm(BasePaymentForm):
 
 class PaymentForm(BasePaymentForm):
     """Payment form for organizations."""
+    currency = HiddenField()
     invoice_number = IntegerField(validators=[DataRequired(lazy_gettext("You need to specify invoice number!"))])

metabrainz/payments/views.py

@@ -1,6 +1,8 @@
 from __future__ import division
 from flask import Blueprint, request, render_template, url_for, redirect, current_app, jsonify
 from flask_babel import gettext
+from werkzeug.datastructures import MultiDict
+
 from metabrainz.payments import SUPPORTED_CURRENCIES
 from metabrainz.model.payment import Payment
 from metabrainz.payments.forms import DonationForm, PaymentForm
@@ -33,7 +35,11 @@ def payment(currency):
     currency = currency.lower()
     if currency not in SUPPORTED_CURRENCIES:
         return redirect('.payment_selector')
-    return render_template('payments/payment.html', form=PaymentForm(), currency=currency)
+    return render_template(
+        'payments/payment.html',
+        form=PaymentForm(formdata=MultiDict([("currency", currency)])),
+        currency=currency
+    )
 
 
 @payments_bp.route('/donors')