javascript - django 上找不到页面(404)错误

Question

一旦以销售形式选择产品，我就试图获取价格值(value)。有一个销售表格，其中包含价格、数量和产品字段。当用户选择产品时，该产品的价格应显示在价格输入框中。为此我使用了ajax。

But i am getting an error of 404 page not found in sales/price/2. When i enter that url in browser i get the result as {"price-pk": 2, "price": 890.0}

代码

sales/views.py

def fetch_price(request, pk):
    response = {}
    product = get_object_or_404(Product, pk=pk)
    print('product',product)
    if request.method=='GET':
        price = product.price
        print('price',price)
        response['price-pk'] = product.pk
        response['price'] = price 
        json_data = json.dumps(response)
        return HttpResponse(json_data, content_type='application/json')

sales/urls.py

url(r'^price/(?P<pk>\d+)$', views.fetch_price, name='fetch_price'),

add_sale.html

<script>
        $('#id_product').on('change', function() {
            price_id = $(this).val(); // if shoe is selected price_id value becomes 2 as pk of shoe is 2
            console.log(price_id);
            url = "/sale/price/"+price_id+"/";
            $.ajax({
                type:'GET',
                url:url,
                success: function(data){
                    console.log('price will be updated based on product selected');
                    $('#id_price').val(data.price);
                }
            })
        });
    </script>

Answer 1

您的 URL 模式不以斜杠结尾，但您的 Ajax 请求是针对以斜杠结尾的 URL。修复其中之一；确保模式有斜线可能会更好地保持一致性。

r'^price/(?P<pk>\d+)/$'