Question

我想了解Django中的基于类的视图是如何工作的。我有View的下一个工作代码。我想在FormView的帮助下编写该代码。我的`FormView代码是否正确？我需要能够分析代码的人，并说出我的错误在哪里。我将不胜感激任何帮助。

现在get method有效。问题是当我尝试submit形成时。形式不会消失。在控制台的同一时间，我看到这个网址："POST /url/ HTTP/1.1" 200 1891。在数据库中，我看到创建了新文章。如何使用post method解决这个奇怪的问题？

CBV with View：

class ArticleCreateView(FormView):
    template_name = 'article/create_article.html'
    form_class = ArticleForm

    def post(self, request):
        data = dict()
        article_create_form = ArticleForm(request.POST, request.FILES)
        if article_create_form.is_valid():
            article_create_form.save()
            data['form_is_valid'] = True
            context = {
                'articles': Article.objects.all()
            }
            data['html_articles'] = render_to_string(
                'article/articles.html',
                context
            )
        else:
            data['form_is_valid'] = False
        return JsonResponse(data)

    def get(self, request):
        data = dict()
        article_create_form = ArticleForm()
        context = {
            'article_create_form': article_create_form
        }
        data['html_article_create_form'] = render_to_string(
            'article/create_article.html',
            context,
            request=request
        )
        return JsonResponse(data)

使用FormView的CBV：

class ArticleCreateView(FormView):
    template_name = 'article/create_article.html'
    form_class = ArticleForm
    form_dict = {
        'Article_create_form': ArticleForm
    }

    def get(self, request):
        data = dict()
        context = {'article_create_form': ArticleForm()}
        data['html_article_create_form'] = render_to_string(
            'article/create_article.html', context, request=request
        )
        return JsonResponse(data)

    def form_valid(self, form):
        data = dict()
        self.object = form.save()
        context = {'articles': Article.objects.all()}
        data['html_articles'] = render_to_string(
            'article/articles.html',
            context
        )
        return JsonResponse(data)

编辑文章FormView代码：

class ArticleEditView(FormView):
    template_name = 'article/edit_article.html'
    form_class = ArticleForm

    def get(self, request, pk):
        data = dict()
        context = {
            'article': Article.objects.get(pk=pk),
            'article_edit_form': ArticleForm(instance=Article.objects.get(pk=pk))
        }
        data['html_article_edit_form'] = render_to_string(
            'article/edit_article.html', context, request=request
        )
        return JsonResponse(data)

    def form_valid(self, form):
        form.save()
        data = dict()
        data['form_is_valid'] = True
        context = {'articles': Article.objects.all()}
        data['html_articles'] = render_to_string('article/articles.html', context)
        return JsonResponse(data)

错误：

Traceback (most recent call last):
  File "/srv/envs/py27/lib/python2.7/site-packages/django/core/handlers/exception.py", line 41, in inner
    response = get_response(request)
  File "/srv/envs/py27/lib/python2.7/site-packages/django/core/handlers/base.py", line 217, in _get_response
    response = self.process_exception_by_middleware(e, request)
  File "/srv/envs/py27/lib/python2.7/site-packages/django/core/handlers/base.py", line 215, in _get_response
    response = response.render()
  File "/srv/envs/py27/lib/python2.7/site-packages/django/template/response.py", line 107, in render
    self.content = self.rendered_content
  File "/srv/envs/py27/lib/python2.7/site-packages/django/template/response.py", line 84, in rendered_content
    content = template.render(context, self._request)
  File "/srv/envs/py27/lib/python2.7/site-packages/django/template/backends/django.py", line 66, in render
    return self.template.render(context)
  File "/srv/envs/py27/lib/python2.7/site-packages/django/template/base.py", line 207, in render
    return self._render(context)
  File "/srv/envs/py27/lib/python2.7/site-packages/django/template/base.py", line 199, in _render
    return self.nodelist.render(context)
  File "/srv/envs/py27/lib/python2.7/site-packages/django/template/base.py", line 990, in render
    bit = node.render_annotated(context)
  File "/srv/envs/py27/lib/python2.7/site-packages/django/template/base.py", line 957, in render_annotated
    return self.render(context)
  File "/srv/envs/py27/lib/python2.7/site-packages/django/template/defaulttags.py", line 458, in render
    url = reverse(view_name, args=args, kwargs=kwargs, current_app=current_app)
  File "/srv/envs/py27/lib/python2.7/site-packages/django/urls/base.py", line 91, in reverse
    return force_text(iri_to_uri(resolver._reverse_with_prefix(view, prefix, *args, **kwargs)))
  File "/srv/envs/py27/lib/python2.7/site-packages/django/urls/resolvers.py", line 497, in _reverse_with_prefix
    raise NoReverseMatch(msg)
NoReverseMatch: Reverse for 'article_edit' with arguments '('',)' not found. 1 pattern(s) tried: [u'administration/article/(?P<pk>\\d+)/edit/$']

articles.html：

{% for article in articles %}
<div class="list-group-item" data-id='{{ article.id }}'>
   <button class="btn slideEditBtn" data-url="{% url 'article:article_edit' pk=slide.id %}">
        <i class="fa fa-pencil" aria-hidden="true"></i>
    </button>
</div>
{% endfor %}

Answer 1

此问题与您的观点无关。您发送json响应的事实意味着您在这里使用Ajax;这意味着您已明确承担了将页面从浏览器更改的责任。

您的Ajax脚本需要在成功提交时执行某些操作。

Answer 2

您忘记将form_is_valid添加到data

def form_valid(self, form):
    data = dict()
    self.object = form.save()
    context = {'articles': Article.objects.all()}
    data['html_articles'] = render_to_string(
        'article/articles.html',
        context
    )
    # NEXT LINE
    data['form_is_valid'] = True
    return JsonResponse(data)

Answer 3

当您的表单有效时，您将发回数据的JsonResponse。您想要的是将用户重定向到包含某些消息的页面。

使用重定向！ https://docs.djangoproject.com/en/1.11/topics/http/shortcuts/#redirect

简单的事情：

return redirect('form-thankyou')

当然，添加一个urlpattern，其中包含名为form-thankyou

的网址

Django中FormView的POST方法？

3 个答案: