表单验证失败后如何呈现模板？

Question

urls.py：

urlpatterns = [
    path('employee/add_employee/', views.add_employee, name='add-employee'),
    path('employee/add_employee/add/', views.add_employee_action, name='add-employee-action'),
]

我有add-employee页和一些要填写的表格。

views.py：

def add_employee(request):
    personal_form = PersonalEmployeeForm()
    history_form = EmployeeHistoryForm()
    return render(
        request,
        'sections/add_employee.html',
        context={
            'personal_form': personal_form,
            'history_form': history_form,
            }
    )

def add_employee_action(request):
    if request.method == "POST":
        personal_form = PersonalEmployeeForm(request.POST)
        history_form = EmployeeHistoryForm(request.POST)
        if personal_form.is_valid() and history_form.is_valid():
            # here is some logic with models
            return redirect('add-employee')
    else:
        personal_form = PersonalEmployeeForm()
        history_form = EmployeeHistoryForm()
    return render(
        request,
        'sections/add_employee.html',
        context={
            'personal_form': personal_form,
            'history_form': history_form,
        }
    )

模板：

<form id="a-submit-form" action="add/" method="POST">
        {% csrf_token %}
        <div class="column-wrapper">
            <div class="column">
                <div class="form-wrapper">
                    {% for field in personal_form.visible_fields %}
                        {% include "elements/forms/form_line.html" %}
                        <br>
                    {% endfor %}
                </div>
            </div>
            <div class="column">
                <div class="form-wrapper">
                    {% for field in history_form.visible_fields %}
                        {% include "elements/forms/form_line.html" %}
                        <br>
                    {% endfor %}
                </div>
            </div>
        </div>
        <div class="button-bar-wrapper">
            <div class="button_bar">
                <a class="a-button positive" id="submit">Добавить</a>
                <a class="a-button" href="{% url 'employee' %}">Сотрудники</a>
                <a class="a-button" href="{% url 'index' %}">На главуную</a>
            </div>
        </div>
    </form>

按元素提交已经过测试，并且可以与jQuery脚本一起很好地工作。

问题是在提交无效表格后，我的页面带有blah-blah/employee/add_employee/add/ URL。而且，如果我尝试再次提交表单，则我的页面带有blah-blah/employee/add_employee/add/add/ URL，这是不正确的。如何使用blah-blah/employee/add_employee/ URL渲染页面并显示所有错误消息？

Answer 1

这可能是因为您在<form>模板的sections/add_employee.html标记中写了relative URL。因此，模板包含以下内容：

<form method="post" action="add/">
    ...
</form>

您可以在{% url … %} template tag [Django-doc]中使用URL：

{% url … %}

此外，通常使用same路径来处理GET和POST请求。因此，实际上您可能只是删除了

<form method="post" action="{% url 'add-employee-action' %}">
    ...
</form>

路径。