提交表单

Question

我想提交表单并返回主题页面，但它不起作用。这是提交前的页面。 page before submit

我输入内容并单击按钮，它不会返回到我想要的页面。错误显示如下： error page

看起来好像是找不到合适的网址，我该如何解决？

view.py ：

def new_topic(request):
    if request.method != "POST":
        form = TopicForm()
    else:
        form = TopicForm(request.POST)
        if form.is_valid():
            form.save()
            return HttpResponseRedirect(reverse('leraning_log:topics'))

    context = {'form':form}     
    return render(request,'learning_logs/new_topic.html',context)

urls.py ：

urlpatterns = [

    url(r'^topics/$',views.topics,name='topics'),

    url(r'^topics/(?P<topic_id>\d+)/$',views.topic,name='topic'),

    url(r'^new_topic/$',views.new_topic,name='new_topic'),
]

new_topic.html ：

{% extends "learning_logs/base.html" %}

{% block content %}
  <p>Add a new topic:</p>

  <form action="{% url 'learning_logs:new_topic' %} method='post'>
    {% csrf_token %}
    {{form.as_p }}
    <button name="submit">add topic</button>
  </form>
{% endblock content %}

Answer 1

问题在于您的表单，只需删除操作：

 <form method='post'>#instead of
 <form action="{% url 'learning_logs:new_topic' %}" method='post'>

如果您省略该操作会自动返回同一页面，您的视图中的更好做法是：

def new_topic(request):
    if request.method = "POST":
        form = TopicForm(request.POST)
        if form.is_valid():
            form.save()
            return HttpResponseRedirect(reverse('leraning_log:topics'))

    else:
        form = TopicForm()

    context = {'form':form}     
    return render(request,'learning_logs/new_topic.html',context)