python - 赋值前引用的局部变量 'intent'

Question

谁能帮我解决赋值前引用局部变量“intent”的问题，我找不到上下文中的 client_secret 被触发的原因。据我所知，如果 if 语句中的代码失败，则将执行 else block ，但我已经设置了打印语句，它也没有出现在终端中。如果有人可以帮助我解决这个问题。

from django.shortcuts import render, redirect, reverse
from django.contrib import messages
from django.conf import settings

from .forms import OrderForm
from .models import Order, OrderLineItem, ProductLineItem, ExerciseLineItem, NutritionLineItem


from merchandise.models import Product
from exercise.models import ExercisePlans
from nutrition.models import NutritionPlans
from cart.contexts import cart_contents

import stripe


def checkout(request):
    stripe_public_key = settings.STRIPE_PUBLIC_KEY
    stripe_secret_key = settings.STRIPE_SECRET_KEY

    if request.method == 'POST':
        cart = request.session.get('cart', {
            'merchandise_dic': {},
            'excercise_plans_dic': {},
            'nutrition_plans_dic': {},
        })
        form_data = {
            'full_name': request.POST['full_name'],
            'email': request.POST['email'],
            'phone_number': request.POST['phone_number'],
            'country': request.POST['country'],
            'postcode': request.POST['postcode'],
            'town_or_city': request.POST['town_or_city'],
            'street_address1': request.POST['street_address1'],
            'street_address2': request.POST['street_address2'],
            'county': request.POST['county'],
        }
        order_form = OrderForm(form_data)
        if order_form.is_valid():
            print("Order form is valid")
            order = order_form.save()
            for product_type, dic in cart.items():
                if product_type == 'merchandise_dic':
                    for item_id, quantity in dic.items():
                        print(f"This is item id of merchandise: {item_id}")
                        print(f"This is quantity of merchandise: {quantity}")
                        
                        product = Product.objects.get(id=item_id)
                        print(product)
                        order_line_item = ProductLineItem(
                            order=order,
                            product=product,
                            quantity=quantity,
                        )
                        order_line_item.save()
   
                elif product_type == 'excercise_plans_dic':
                    for item_id, quantity in dic.items():
                        print(f"This is item id of exercise plan: {item_id}")
                        print(f"This is quantity of exercise plan: {quantity}")
                        
                        product = ExercisePlans.objects.get(id=item_id)
                        print(product)
                        order_line_item = ExerciseLineItem(
                            order=order,
                            product=product,
                            quantity=quantity,
                        )
                        order_line_item.save()
                
                elif product_type == 'nutrition_plans_dic':
                    for item_id, quantity in dic.items():
                        print(f"This is item id of nutrition plan: {item_id}")
                        print(f"This is quantity of nutrition plan: {quantity}")
                        
                        product = NutritionPlans.objects.get(id=item_id)
                        print(product)
                        order_line_item = NutritionLineItem(
                            order=order,
                            product=product,
                            quantity=quantity,
                        )
                        order_line_item.save()
        else:
            print("Order form is invalid")        
            messages.error(request, ('There was an error with your form. '
                                    'Please double check your information.'))
            return redirect(reverse('checkout'))

    else:
        print("Order form is invalid")
        cart = request.session.get('cart', {
            'merchandise_dic': {},
            'excercise_plans_dic': {},
            'nutrition_plans_dic': {},
        })
        if not cart:
            messages.error(request,
                           "There is nothing in your \
                                shopping cart at the moment")
            return redirect(reverse('products'))

        """ Got total from cart_contents """
        current_cart = cart_contents(request)
        current_total = current_cart['total']
        stripe_total = round(current_total * 100)
        """ Set secret key on stripe """
        stripe.api_key = stripe_secret_key
        """ Created payment intent """
        intent = stripe.PaymentIntent.create(
            amount=stripe_total,
            currency=settings.STRIPE_CURRENCY,
            )
        print(intent)
        order_form = OrderForm()

    if not stripe_public_key:
        messages.warning(request, 'Stripe public key is missing. \
            Did you forget to set it in your environment?')

    template = 'checkout/checkout.html'

    context = {
        'order_form': order_form,
        'stripe_public_key': stripe_public_key,
        'client_secret': intent.client_secret,
    }
    return render(request, template, context)

Answer 1

如果您的方法 == "POST": 为真，则不会为意图变量分配任何参数。
上下文 = {'order_form':order_form，'stripe_public_key':stripe_public_key，'client_secret': intent.client_secret,}因此，上一节中的意图未分配任何内容。