如何为Django-Oscar添加更多支付方式？已接入货到付款

Hey there! Let's walk through adding a new payment method to your checkout flow. Based on the code snippet you shared, I'll break this down into clear, actionable steps:

First, create a class for your new payment method (typically in a payment/methods.py file in your app). This class will define the method's unique identifier, display name, and any availability rules:

from oscar.apps.payment.methods import PaymentMethod  # Adjust import if using a different framework

class NewPaymentGateway(PaymentMethod):
    code = 'new_payment'  # Unique code to identify this method
    name = 'Your New Payment Gateway'  # Name shown to users at checkout

    def is_available(self, order_total):
        # Add logic to check if this method is available (e.g., minimum order amount)
        return True  # Return False to disable it under certain conditions

Modify your PaymentDetailsView to include both your existing cash-on-delivery method and the new one in the template context. Update the get_context_data method:

class PaymentDetailsView(PaymentDetailsView):
    template_name = 'checkout/payment-details.html'
    template_name_preview = 'checkout/preview.html'

    def get_context_data(self, **kwargs):
        ctx = super().get_context_data(**kwargs)
        ctx['signature'] = gateway.hmac_gen(ctx)
        ctx['amount'] = '%s' % ctx['order_total'].incl_tax

        # Add all available payment methods to the context
        from your_app.payment.methods import CashOnDelivery, NewPaymentGateway
        ctx['payment_methods'] = [
            CashOnDelivery(),
            NewPaymentGateway()
        ]
        return ctx

Update your checkout/payment-details.html template to let users select between payment methods. Add a radio button group for each method:

<div class="payment-selection">
    <h3>Choose Payment Method</h3>
    {% for method in payment_methods %}
        <div class="payment-option">
            <input type="radio" id="payment-{{ method.code }}" name="payment_method" value="{{ method.code }}" required>
            <label for="payment-{{ method.code }}">{{ method.name }}</label>
        </div>
    {% endfor %}
</div>

Add logic to your view to handle the selected payment method when the user submits the checkout form. Override the post method (or form handling logic):

def post(self, request, *args, **kwargs):
    selected_method = request.POST.get('payment_method')
    ctx = self.get_context_data()

    if selected_method == 'new_payment':
        # Handle redirection/processing for your new payment gateway
        return self.process_new_payment(ctx)
    elif selected_method == 'cash_on_delivery':
        # Your existing cash-on-delivery processing logic
        return self.process_cash_on_delivery(ctx)
    else:
        messages.error(request, "Invalid payment method selected")
        return self.render_to_response(ctx)

def process_new_payment(self, context):
    # Add code to interact with your new payment gateway:
    # 1. Generate a payment request/order
    # 2. Redirect the user to the gateway's payment page
    payment_url = gateway.initiate_payment(
        order=context['order'],
        amount=context['amount']
    )
    return redirect(payment_url)

Don't forget to:

• Add your new payment gateway's API credentials to your app settings (e.g., API keys, secrets)
• Set up a webhook endpoint to handle payment status updates (success, failure, cancellation)
• Test the full flow: selecting the new method, completing payment, and verifying order status updates

内容的提问来源于stack exchange，提问作者Artem Goh