Django的電子郵件附件問題

Question

我有一個表格模式：

class ManuscriptForm(forms.Form): 
    name = forms.CharField(label='Your Name') 
    sender = forms.EmailField(label='Your Email') 
    attach = forms.Field(label='Attach Your Manuscript', widget = forms.FileInput, required=False) # upload field! 
    subject = forms.CharField() 
    message = forms.CharField(widget = forms.Textarea) 
    cc_myself = forms.BooleanField(required=False) 

和視圖：

def manuscript_form(request): 
if request.method == 'POST': # If the form has been submitted... 
    form = ManuscriptForm(request.POST, request.FILES) # A form bound to the POST data 
    if form.is_valid(): # All validation rules pass 
     name = form.cleaned_data['name'] 
     sender = form.cleaned_data['sender'] 
     attach = request.FILES['attach'] 
     subject = form.cleaned_data['subject'] 
     message = form.cleaned_data['message'] 
     cc_myself = form.cleaned_data['cc_myself'] 

     recipients = ['info@example.com'] 
     if cc_myself: 
      recipients.append(sender) 

     from django.core.mail import send_mail, EmailMessage 
     mail = EmailMessage(subject, message, sender, recipients) 
     mail.attach(attach.name, attach.read(), attach.content_type) 
     mail.send() 
     return HttpResponseRedirect('/thanks/') # Redirect after POST 
else: 
    form = ManuscriptForm() # An unbound form 

return render_to_response('manuscript_form.html', { 
    'form': form, 
}, context_instance=RequestContext(request)) 

的問題是我不斷收到一個："Key 'attach' not found in <MultiValueDict: {}>"錯誤。隨着附件功能取消，一切正常。有什麼建議麼？

Answer 1

用attach = request.FILES.get('attach')代替attach = request.FILES['attach']，以便當沒有文件被用戶「附加」時變量attach將爲None。

當你做request.FILES['attach']你假設鑰匙是存在的，除了該字段不是required，它可能已被您的形式錯誤檢查器捕獲。