Django表格员额导致404人

Question

我试图为update或delete接受一个表单，运行进程并返回更新的url或更新的对象列表。我已经运行了动态url大楼，但是当我点击submit时，我得到了一个404。我正在为如何处理这个帖子而挣扎，因为它在代码中似乎没有达到那么高的程度。代码如下：

urls.py

    path("customers/", views.customers, name="customers"),
    path("customers/customer/<int:id>/", views.customer),

forms.py

    class CustomerMaintForm(ModelForm):
        class Meta:
            model = AppCustomerCst
            fields = ('id_cst', 'is_active_cst', 'name_cst', 'address_1_cst', 'address_2_cst', 'address_3_cst',
                      'city_cst', 'state_cst', 'zip_cst', 'country_cst', 'salesrep_cst', 'type_cst',
                      'is_allowed_flat_cst', 'iddef_cst', 'date_created_cst', 'date_suspended_cst',
                      'date_first_tran_cst', 'date_last_tran_cst', 'is_credit_hold_cst',
                      'old_balance_cst', 'balance_notify_cst', 'balance_statement_cst',
                      'balance_conversion_cst', 'balance_cst', 'receive_emails_cst',
                      'contact_domain_cst'
                      )
            labels = {'id_cst': 'Customer ID', 'is_active_cst': 'Active?', 'name_cst': mark_safe('<p>Name'),
                      'address_1_cst': 'Address 1',
                      'address_2_cst': 'Address 2', 'address_3_cst': 'Address 3', 'city_cst': 'City', 'state_cst': 'State',
                      'zip_cst': 'Zip', 'country_cst': 'Country', 'salesrep_cst': 'Sales Rep', 'type_cst': 'Type',
                      'is_allowed_flat_cst': 'Allowed Flat?', 'iddef_cst': mark_safe('<p>Id'),
                      'date_created_cst': 'Created Date', 'date_suspended_cst': 'Suspended Date',
                      'date_first_tran_cst': 'First Tran Date', 'date_last_tran_cst': 'Last Tran Date',
                      'is_credit_hold_cst': 'Credit Hold?', 'old_balance_cst': 'Old Balance',
                      'balance_notify_cst': 'Balance Notify', 'balance_statement_cst': 'Balance Statement',
                      'balance_conversion_cst': 'Balance Conversion', 'balance_cst': 'Current Balance',
                      'receive_emails_cst': 'Receive Emails?', 'contact_domain_cst': mark_safe('<p>Contact Domain')}

views.py

def customer(request, id):
    if request.method == "GET":
        obj = AppCustomerCst.objects.get(id_cst=id)
        instance = get_object_or_404(AppCustomerCst, id_cst=id)
        form = CustomerMaintForm(request.POST or None, instance=instance)
        ContactFormSet = modelformset_factory(AppContactCnt, can_delete=True, fields=(
            'name_cnt', 'phone_cnt', 'email_cnt', 'note_cnt', 'receives_emails_cnt'))
        formset = ContactFormSet(queryset=AppContactCnt.objects.filter(idcst_cnt=id), prefix='contact')
        tpList = AppCustomerTpRel.objects.filter(idcst_rel=id).select_related('idcst_rel', 'idtrp_rel').values(
            'idtrp_rel__id_trp', 'idtrp_rel__tpid_trp', 'idtrp_rel__name_trp', 'sender_id_rel', 'category_rel',
            'cust_vendor_rel')
        TPFormSet = formset_factory(TPListForm, can_delete=True)
        tp_formset = TPFormSet(initial=tpList, prefix='tp')
        doc_list = DocData.objects.document_list(id)
        DocFormSet = formset_factory(DocumentListForm)
        DocFormSet = formset_factory(DocumentListForm)
        doc_formset = DocFormSet(initial=doc_list, prefix='doc')
        context = {'form': form, 'formset': formset, 'tp_formset': tp_formset, 'doc_formset': doc_formset, 'id': id}
        print(form.errors)
        return render(request, 'customer.html', context=context)

    elif '_edit' in request.POST:
        print(id, request.POST)
        cust_name = request.POST['name_cst']
        instance = get_object_or_404(AppCustomerCst, name_cst=cust_name)
        form = CustomerMaintForm(request.POST, instance=instance)
        if form.is_valid():
            form.save()
            return HttpResponseRedirect("/customers/customer/{id}")
        else:
            context = {'form': form, 'contact_form': contact_form}
            return redirect(request, 'customer.html', context=context)

    elif '_delete' in request.POST:
        cust_name = request.POST['name_cst']
        instance = get_object_or_404(AppCustomerCst, name_cst=cust_name)
        form = CustomerMaintForm(request.POST, instance=instance)
        if form.is_valid():
            AppCustomerCst.objects.filter(id_cst=id).delete()
            return render(request, 'customers.html')

    else:
        pass

customer.html

{% extends 'base.html' %}
{% load crispy_forms_tags %}
{% url customer string %}
{% block content %}


<form method="post" action="/customer">
    {% csrf_token %}

    <div style="height:300px;overflow:auto;">
        {{ form }}
    </div>
    <input type="submit" value="Edit" name="_edit">
    <input type="submit" value="Delete" name="_delete">
</form>
{% endblock %}

Answer 1

404是因为表单向POST发送一个/customer，您的URL是

• /customers/
• /customers/customer/<int:id>/

所以我首先给你的path加上一个名字，这样它就像path("customers/customer/<int:id>/", views.customer, name='customer')一样

然后将表单操作更改为使用django URL反转；

<form method="post" action="{% url 'customer' id=id %}">

通过这样做，它将根据您所使用的客户表单的ID为您生成URL，假设id位于视图代码中的上下文中。

这应该可以解决404问题，并改善一些情况。