Question

我见过很多关于django验证器没有给出正确答案的问题，但我有一个不同的问题。尽管从Django文档示例中复制，但我甚至都没有触发。这就是我所拥有的：

models.py

def content_file_name(instance, filename):
    ext = ''.join(filename.split())[:-4]
    foldername = "%s/%s" % (uuid.uuid4(), ext)
    return '/'.join(['documents', str(foldername), filename])

class Document(models.Model):
     docfile = models.ImageField(upload_to=content_file_name)

class DocumentImage(models.Model):
     imagefile = models.ImageField(upload_to=content_file_name)
     image = models.ForeignKey(Document, related_name='Image', null=True, on_delete=models.CASCADE)

views.py

def documentlist(request):
    # Handle file upload
    if request.method == 'POST':
        form = DocumentForm(request.POST, request.FILES)
        if form.is_valid():
            newdoc = form.save()
            newdoc.create_documentfiles()
            messages.add_message(request, messages.INFO, "Saved")
            return HttpResponseRedirect(reverse('list'))
    else:
        form = DocumentForm()  # A empty, unbound form

    # Load documents for the list page
    documents = Document.objects.all()

    # Render list page with the documents and the form
    return render(
        request,
        'list.html',
        {'documents': documents, 'form': form}
    )

forms.py

class DocumentForm(forms.ModelForm):

    class Meta:
        model = Document
        fields = ('docfile',)

    def clean_image(self):
        file = self.cleaned_data.get('docfile')
        if file:
            if imghdr.what(file.read()) != "gif":
                raise forms.ValidationError("Please upload a .gif file")
                print('complete');
            file.seek(0)
        return file

我甚至试过像这样设置 forms.py ：

def clean_image(self):
    print('test')
    raise forms.ValidationError("Please upload a .gif file")

我仍然没有在控制台中打印ValidationError或test。有人遇到过这样的问题吗？

Answer 1

您的验证功能名称为clean_image，但表单上没有image字段

fields = ('docfile',)

所以它没有被调用。如果您要验证clean_docfile字段

，则应将其设为docfile

在表单子类上调用clean_<fieldname>()方法 - 其中<fieldname>替换为表单字段属性的名称。此方法执行特定于该特定属性的任何清理，与其所属的字段类型无关。此方法未传递任何参数。您需要在self.cleaned_data中查找该字段的值，并记住此时它将是一个Python对象，而不是表单中提交的原始字符串（它将在cleaning_data中，因为一般字段clean（）方法，上面，已经清理了一次数据。）

https://docs.djangoproject.com/en/1.11/ref/forms/validation/

Answer 2

您的干净方法名称应重命名为

Sub CleanUpExport()
Dim aFrame As Frame
Dim p As Paragraph
Dim l As Single

For Each aFrame In ActiveDocument.Frames
   aFrame.RelativeHorizontalPosition = wdRelativeHorizontalPositionPage
   l = aFrame.HorizontalPosition
   For  each p In aFrame.Range.Paragraphs
      p.LeftIndent = l
   Next p
   aFrame.Delete
Next aFrame
End Sub

Django表单验证不会被触发

2 个答案: