Question

我创建了一个呈现模板的视图，并在提交表单时更新了两个模型。

我目前只验证一个表单（is_valid()），但另一个表单也正在清理，即使我没有调用它们上的is_valid()或'clean()方法

我的观点：

def update_two_models_at_once(request):
    if request.method == "POST":
        form1 = Form1(request.POST)
        form2 = Form2(request.POST)
        if form1.is_valid():
            #form1.save()
            #post = form2.save(commit=False)
            #post.save()
            return HttpResponseRedirect(reverse('stock:forms'))
    else:
        form2 = Form2()
    return render(request, 'update_models.html', {'form2': form2})

我在Form2中有一个打印声明，每次提交表单时都会执行该声明，即使我只是尝试验证Form1。

有什么我做错了或似乎丢失了吗？追溯回到这一行：

return render(request, 'update_models.html', {'form2': form2})

当我第一次呈现页面时，它显示正常。但是一旦我提交了页面，Form1就不会验证（我故意让它不验证），当它再次呈现模板时，它会调用Form2的clean方法。这有什么用？我现在只想验证并清除Form1。

编辑：

我的Form2代码：

class Form2(forms.ModelForm):

    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)

    def clean(self):
        cleaned_data = super().clean()
        serial = cleaned_data.get('serial')

        print(error)

    class Meta:
        model = Form2Model
        fields = '__all__'

提交模板时，在print(error)到达时追溯：

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Python36\lib\site-packages\django\core\handlers\exception.py", line 35, in inner
    response = get_response(request)
  File "C:\Python36\lib\site-packages\django\core\handlers\base.py", line 128, in _get_response
    response = self.process_exception_by_middleware(e, request)
  File "C:\Python36\lib\site-packages\django\core\handlers\base.py", line 126, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "...\views.py", line 166, in update_two_models_at_once
    return render(request, 'update_models.html', {'form': form})
  File "C:\Python36\lib\site-packages\django\shortcuts.py", line 36, in render
    content = loader.render_to_string(template_name, context, request, using=using)
  File "C:\Python36\lib\site-packages\django\template\loader.py", line 62, in render_to_string
    return template.render(context, request)
  File "C:\Python36\lib\site-packages\django\template\backends\django.py", line 61, in render
    return self.template.render(context)
  File "C:\Python36\lib\site-packages\django\template\base.py", line 175, in render
    return self._render(context)
  File "C:\Python36\lib\site-packages\django\template\base.py", line 167, in _render
    return self.nodelist.render(context)
  File "C:\Python36\lib\site-packages\django\template\base.py", line 943, in render
    bit = node.render_annotated(context)
  File "C:\Python36\lib\site-packages\django\template\base.py", line 910, in render_annotated
    return self.render(context)
  File "C:\Python36\lib\site-packages\django\template\loader_tags.py", line 155, in render
    return compiled_parent._render(context)
  File "C:\Python36\lib\site-packages\django\template\base.py", line 167, in _render
    return self.nodelist.render(context)
  File "C:\Python36\lib\site-packages\django\template\base.py", line 943, in render
    bit = node.render_annotated(context)
  File "C:\Python36\lib\site-packages\django\template\base.py", line 910, in render_annotated
    return self.render(context)
  File "C:\Python36\lib\site-packages\django\template\loader_tags.py", line 67, in render
    result = block.nodelist.render(context)
  File "C:\Python36\lib\site-packages\django\template\base.py", line 943, in render
    bit = node.render_annotated(context)
  File "C:\Python36\lib\site-packages\django\template\base.py", line 910, in render_annotated
    return self.render(context)
  File "C:\Python36\lib\site-packages\django\template\defaulttags.py", line 307, in render
    match = condition.eval(context)
  File "C:\Python36\lib\site-packages\django\template\defaulttags.py", line 880, in eval
    return self.value.resolve(context, ignore_failures=True)
  File "C:\Python36\lib\site-packages\django\template\base.py", line 676, in resolve
    obj = self.var.resolve(context)
  File "C:\Python36\lib\site-packages\django\template\base.py", line 802, in resolve
    value = self._resolve_lookup(context)
  File "C:\Python36\lib\site-packages\django\template\base.py", line 843, in _resolve_lookup
    current = getattr(current, bit)
  File "C:\Python36\lib\site-packages\django\forms\forms.py", line 174, in errors
    self.full_clean()
  File "C:\Python36\lib\site-packages\django\forms\forms.py", line 377, in full_clean
    self._clean_form()
  File "C:\Python36\lib\site-packages\django\forms\forms.py", line 404, in _clean_form
    cleaned_data = self.clean()
  File "...\forms.py", line 80, in clean
    print(error)
NameError: name 'error' is not defined

正在无意中清理Django表单

0 个答案: