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 页面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>

通过 <a> 元素提交已经过测试，在 jQuery 脚本中运行良好。

问题是在提交无效表单后我有一个页面 blah-blah/employee/add_employee/add/ URL。如果我再次尝试提交表单，我会看到一个包含 blah-blah/employee/add_employee/add/add/ URL 的页面，这是不正确的。如何使用 blah-blah/employee/add_employee/ URL 呈现页面并显示所有错误消息？

Answer 1

这可能是因为您在 sections/add_employee.html 模板的 <form> 标签中写了 relative URL。因此，该模板包含如下内容：

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

您可以将 URL 与 {% url … %} template tag [Django-doc] 一起使用：

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

此外，通常使用相同的路径来处理GET和POST请求。所以实际上你可以简单地删除 'add-employee' 路径。

表单验证失败后如何呈现模板？

How to render template after failed form validation?

django

django-forms

django-urls