错误类型对象'Configuration'在使用 braintree、Django 时没有属性'environment'

Question

我正试图用这本书来学习Django"Django 3的例子"；Antiono Mele和我在使用braintree时对沙箱环境的配置有问题。在他们的页面上写着：

gateway = braintree.BraintreeGateway(
braintree.Configuration(
environment=braintree.Environment.Sandbox,
merchant_id='**********',
public_key='**********',
private_key='**********'
)
)

和书中完全一样。当我尝试付款时，错误类型对象"配置"没有属性"环境"。我不知道为什么会出现错误。我检查了我使用的应用程序的版本，它们与书中的版本相匹配(Pillow==7.0.0.，Django==3.1.8，celene==4.4.2，braintree==3.59.0(。下面我放了所需的代码。

付款/查看.py

import braintree
from django.shortcuts import render, redirect, get_object_or_404
from orders.models import Order


gateway = braintree.BraintreeGateway(
braintree.Configuration(
environment=braintree.Environment.Sandbox,
merchant_id='**********',
public_key='**********',
private_key='**********'
)
)
# Utworzenie egzemplarza bramki płatności Braintree.

def payment_process(request):
order_id = request.session.get('order_id')
order = get_object_or_404(Order, id=order_id)
if request.method == 'POST':
# Pobranie tokena nonce.
nonce = request.POST.get('payment_method_nonce', None)
# Utworzenie i przesłanie transakcji.
result = braintree.Transaction.sale({
'amount': '{:.2f}'.format(order.get_total_cost()),
'payment_method_nonce': nonce,
'options': {
'submit_for_settlement': True
}
})
if result.is_success:
# Oznaczenie zamówienia jako opłacone.
order.paid = True
# Zapisanie unikatowego identyfikatora transakcji.
order.braintree_id = result.transaction.id
order.save()
return redirect('payment:done')
else:
return redirect('payment:canceled')
else:
# Wygenerowanie tokena.
client_token = braintree.ClientToken.generate()
return render(request,
'payment/process.html',
{'order': order,
'client_token': client_token})

def payment_done(request):
return render(request, 'payment/done.html')
def payment_canceled(request):
return render(request, 'payment/canceled.html') ```

myshop/urls.py

from django.contrib import admin
from django.urls import path, include
from django.conf import settings
from django.conf.urls.static import static
urlpatterns = [
path('admin/', admin.site.urls),
path('cart/', include('cart.urls', namespace='cart')),
path('orders/', include('orders.urls', namespace='orders')),
path('payment/', include('payment.urls', namespace='payment')),
path('', include('shop.urls', namespace='shop')),
]
if settings.DEBUG:
urlpatterns += static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)

payment/templates/payment/process.html

{% extends "shop/base.html" %}
{% block title %}Zapłać kartą kredytową{% endblock %}
{% block content %}
<h1>Zapłać kartą kredytową</h1>
<form action="." id="payment" method="post">
<label for="card-number">Numer karty</label>
<div id="card-number" class="field"></div>
<label for="cvv">CVV</label>
<div id="cvv" class="field"></div>
<label for="expiration-date">Data ważności</label>
<div id="expiration-date" class="field"></div>
<input type="hidden" id="nonce" name="payment_method_nonce" value="">
{% csrf_token %}
<input type="submit" value="Pay">
</form>
<!-- Załadowanie wymaganych komponentów klienta. -->
<script
src="https://js.braintreegateway.com/web/3.29.0/js/client.min.js"></script>
<!-- Załadowanie komponentu Hosted Fields. -->
<script src="https://js.braintreegateway.com/web/3.29.0/js/hosted-fields.min.js"></script>
<script>
var form = document.querySelector('#payment');
var submit = document.querySelector('input[type="submit"]');
braintree.client.create({
authorization: '{{ client_token }}'
}, function (clientErr, clientInstance) {
if (clientErr) {
console.error(clientErr);
return;
}
braintree.hostedFields.create({
client: clientInstance,
styles: {
'input': {'font-size': '13px'},
'input.invalid': {'color': 'red'},
'input.valid': {'color': 'green'}
},
fields: {
number: {selector: '#card-number'},
cvv: {selector: '#cvv'},
expirationDate: {selector: '#expiration-date'}
}
}, function (hostedFieldsErr, hostedFieldsInstance) {
if (hostedFieldsErr) {
console.error(hostedFieldsErr);
return;
}
submit.removeAttribute('disabled');
form.addEventListener('submit', function (event) {
event.preventDefault();
hostedFieldsInstance.tokenize(function (tokenizeErr, payload) {
if (tokenizeErr) {
console.error(tokenizeErr);
return;
}
// Ustawienie tokena nonce w celu przesłania na serwer.
document.getElementById('nonce').value = payload.nonce;
// Przesłanie formularza.
document.getElementById('payment').submit();
});
}, false);
});
});
</script>
{% endblock %}

致以最良好的问候。

Answer 1

我知道有点晚了，但也许将来会有人需要它
更改自：

gateway = braintree.BraintreeGateway(
braintree.Configuration(
environment=braintree.Environment.Sandbox,
merchant_id='**********',
public_key='**********',
private_key='**********'
)
)

收件人：

gateway = braintree.BraintreeGateway(
braintree.Configuration.configure(
environment=braintree.Environment.Sandbox,
merchant_id='**********',
public_key='**********',
private_key='**********'
)
)