Question

我正在尝试使用用户模型创建自定义发送电子邮件应用程序。

我能够通过发送电子邮件来使应用程序正常运行，但它不会在模板上引发错误，如果用户不存在。

所以我试着测试一下，如果字符数突破并且没有错误提升，它是否会引发任何错误。有人可以帮助我

class Thread(models.Model):
    subject = models.CharField(max_length=100, blank=True)
    user = models.ForeignKey(User)

class Message(models.Model):
    user = models.ForeignKey(User, related_name='sender')
    recipient = models.ForeignKey(User, related_name='recipient')
    created = models.DateTimeField(auto_now_add=True)
    body = models.CharField(max_length=1000)
    read = models.BooleanField(default=False)
    trash = models.BooleanField(default=False)
    sentmessage = models.BooleanField(default=False)
    thread = models.ForeignKey(Thread)


    def __unicode__(self):
        return self.body

views.py

@login_required
def Create(request):
    form = NewMessageForm()
    if request.method =='POST':
        form = NewMessageForm(request.POST)
        if form.is_valid():
            recipient = form.cleaned_data['recipient']
            subject = form.cleaned_data['subject']
            message = form.cleaned_data['message']
            thread = Thread.objects.create(subject=subject,user=request.user)
            recipient = User.objects.get(username=recipient)
            message = Message.objects.create(user=request.user,recipient=recipient,body=message,thread=thread)
            return HttpResponseRedirect(reverse('world:message'))
        else:
            return HttpResponseRedirect(reverse('world:Create'))

    return render(request,'create.html',{'messages':messages,'form':form})

形式

class NewMessageForm(forms.Form):
    recipient = forms.CharField(required=True,max_length=1)
    subject = forms.CharField(required=True,max_length=1)
    message = forms.CharField(widget=forms.Textarea,required=True,max_length=1)

    def clean_recipient(self):
            recipient = self.cleaned_data['recipient']
            try:
                recipient = User.objects.get(username=recipient)
            except User.DoesNotExist:
                raise forms.ValidationError("This username does not exist")
            return recipient

模板

<form method="POST" >{% csrf_token %}

    {{form.recipient}}
    {{form.subject}}
    {{form.message}}

    <input type = "submit" value= "send" class="save" id="send"/>


</form>

{{form.recipient.errors}}
{{form.subject.errors}}
{{form.message.errors}}

Answer 1

您的模式略有错误：

if request.method =='POST':
    form = NewMessageForm(request.POST)
    if form.is_valid():
        recipient = form.cleaned_data['recipient']
        subject = form.cleaned_data['subject']
        message = form.cleaned_data['message']
        thread = Thread.objects.create(subject=subject,user=request.user)
        recipient = User.objects.get(username=recipient)
        message = Message.objects.create(user=request.user,recipient=recipient,body=message,thread=thread)
        return HttpResponseRedirect(reverse('world:message'))
else:
    form = NewMessageForm()

想法是你首先检查它是否是一个POST，好吧 - 它有效吗？伟大的 - 返回正确的流 - 否则通过is_valid（）附加到上下文的错误传递和传递形式。如果它是一个新的 - 创建它作为最后的手段，因为它还没有任何信息。

另外请不要忘记form.non_field_errors，因为它将包含并非特定于任何字段的错误。

Django表格不会引发错误

1 个答案: