Question

我想要一张邀请函表格。我创建了一个表单但是当我转到url / invitations / request时，显示的是无效块，而不是带有表单的模板。可能是什么原因？

url(r'^request/$', requestInvitation, name='request-invitation'),

@csrf_exempt
def requestInvitation(request):
    form = InviteForm(request.POST or None)
    response_data = {}
    if form.is_valid():
        join = form.save(commit=False)
        email = form.cleaned_data.get('email')
        already_join, created = Invitation.objects.get_or_create(email=email)
        if created:
            already_join.invite_code = get_invite_code()
            already_join.save()
            response_data['result'] = "Thank you for your interest"
            response_data['email'] = email
            print ('response_data', response_data)
        return HttpResponse(json.dumps(response_data),content_type="application/json")
    else:
        return HttpResponse(json.dumps({'result': 'Error message'}))
        # return HttpResponseRedirect('/')
    context = {"form": form}
    return render(request, 'invitation/invitation.html', context)

<form method="POST" class="invitation-form vcenter" action=".">
              {% csrf_token %}
              <div class="ui action input">
                <input type="email" class="requested_email" name="email" placeholder="Email address">
                <button class="ui button primary">Request Invite</button>
              </div>
 </form>

Answer 1

我认为，您需要将POST调用分开。我的意思是，你需要检查请求方法是否是POST。像这样：

if request.method == 'POST': # If the form has been submitted...
  response_data = {}
    if form.is_valid():
      join = form.save(commit=False)
      email = form.cleaned_data.get('email')
      already_join, created = Invitation.objects.get_or_create(email=email)
      if created:
        already_join.invite_code = get_invite_code()
        already_join.save()
        response_data['result'] = "Thank you for your interest"
        response_data['email'] = email
        print ('response_data', response_data)
        return HttpResponse(json.dumps(response_data),content_type="application/json")
     else:
        return HttpResponse(json.dumps({'result': 'Error message'}))
    # return HttpResponseRedirect('/')

else:
  # An unbound form

Answer 2

以下是request的工作流程：

发出GET个请求（您只是访问/invitations/request。因此request.POST为空{}。
form = InviteForm(request.POST or None)。因此，InviteForm无效。
if form.is_valid():为False。
else: return HttpResponse(json.dumps({'result': 'Error message'}))。因此，执行else子句，返回JSON响应，您将在模板中显示该响应。

现在，对于解决方案：

@csrf_exempt
def requestInvitation(request):
    form = InviteForm()
    response_data = {}
    if request.method == 'POST':
        # This is a POST request, so request.POST will not be {}
        form = InviteForm(request.POST)
        if form.is_valid():
            join = form.save(commit=False)
            email = form.cleaned_data.get('email')
            already_join, created = Invitation.objects.get_or_create(email=email)
            if created:
                already_join.invite_code = get_invite_code()
                already_join.save()
                response_data['result'] = "Thank you for your interest"
                response_data['email'] = email
                print ('response_data', response_data)
                return HttpResponse(json.dumps(response_data),content_type="application/json")
        else:
            return HttpResponse(json.dumps({'result': 'Error message'}))

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

呈现无效的表单块

2 个答案: