Question

我想在网页的views.py内的方法中显示一些从mysql查询的值，但是在网页上看不到。在views.py中查看我的方法：

def update_delete_customer(request, id):
    if request.method == 'POST':
        print("TODO")

    else:
        form = CustomerForm()
        if id is None:
            print("id is None")
            return HttpResponseRedirect('AddressTableMaintain/')
        print("----------------")
        print(id)
        customerList = Customer.objects.raw("select * from customers where customer_id = %s", [int(id)])
        customer = list(customerList)[0]
        print(customer)
        form.customerId = customer.customerId
        form.first_name = customer.first_name
        form.last_name = customer.last_name
        print(customer.customerId)
        print(customer.first_name)
        print(customer.last_name)
        return render(request, 'EditCustomer.html', {'form': form})
    return HttpResponseRedirect('AddressTableMaintain/')

我可以在控制台中看到由打印功能生成的输出客户ID，名字，姓氏。以下是我的EditCustomer.html的内容：

{% extends 'base.html' %}

{% block title %} Remove or Update customer {% endblock %}

{% block content %}
<style>
table, th, td {
    border: 1px solid black;
    border-collapse: collapse;
}
</style>
<form action="{% url 'RU_customer_post' %}" method="post">
{% csrf_token %}
<table width="50%" align="center">
    <tr>
        <td>Customer ID</td>
        <td>
            {{ form.customer_id }}

        </td>
    </tr>
    <tr>
        <td>First Name</td>
        <td>
            {{ form.first_name }}

        </td>
    </tr>

    <tr>
        <td>Last Name</td>
        <td>
            {{ form.last_name }}
        </td>
    </tr>
    <tr>
        <td colspan="2" align="center"><input type="submit" value = "OK" /></td>
    </tr>
</table>
</form>
{% endblock %}

我的预期结果是该值应绑定到网页并显示，但实际效果如下：

那么，有人可以告诉我原因以及如何解决吗？

Answer 1

替换：

    form = CustomerForm()
    if id is None:
        print("id is None")
        return HttpResponseRedirect('AddressTableMaintain/')
    print("----------------")
    print(id)
    customerList = Customer.objects.raw("select * from customers where customer_id = %s", [int(id)])
    customer = list(customerList)[0]

具有：

    if id is None:
        print("id is None")
        return HttpResponseRedirect('AddressTableMaintain/')
    print("----------------")
    print(id)
    customerList = Customer.objects.raw("select * from customers where customer_id = %s", [int(id)])
    form = CustomerForm(list(customerList)[0])

可能与之相关：为什么要使用原始SQL而不是更简单的方法：

    customer = Customer.objects.get(pk=id)

哪个会返回您正在寻找的一位客户？

使用Django无法在网页上显示值

1 个答案: