Question

详细代码：

形式：

class TrainingExpForm(BaseModelForm):
    company_type = forms.ChoiceField(choices=COMPANY_TYPE_CHOICE)
    company = forms.CharField(label=u'your company', required=True)

    def __init__(self, *args, **kwargs):
        super(TrainingExpForm, self).__init__(*args, **kwargs)
        self.fields['exp_type'].initial = 'T'
        # redefine order, because extra field 'company_type' can not write in Meta.fields
        self.fields.keyOrder = ('exp_type', 'company_type', 'company', 'name', 'start_date', 'end_date',  'description')

    def clean_exp_type(self):
        exp_type = self.cleaned_data.get('exp_type')
        if not exp_type:
            self.cleaned_data['exp_type'] = self.initial['exp_type']

    class Meta:
        model = Experience
        fields = ('exp_type', 'company', 'name', 'start_date', 'end_date',  'description')
        widgets = {
            'exp_type': HiddenInput(),
        }

def get_exp_form(exp_type):
    return WorkExpForm if exp_type =='W' else TrainingExpForm

的观点：

def exp_manage(request, exp_type, id=None):
    if id:
        exp = Experience.objects.get(id=id)
    else:
        exp = None

    ExpForm = get_exp_form(exp_type)

    if request.method == 'POST':
        form = ExpForm(request.POST, instance=exp)
        if form.is_valid():
            return http.HttpResponseRedirect(reverse('zhemei_resume_manage'))
    else:
        form = ExpForm(instance=exp)

我在第if form.is_valid():行设置了断点。

>>> request.POST.get('exp_type')
u'T'
>>> form.data.get('exp_type')
u'T'
>>> form.errors
{'exp_type': [u'can not be null']}

我无法理解上面的结果。我还试图找出django form生成form.errors的方式。但我无法在django源中找到相关代码有人可以帮忙吗？

Answer 1

clean_xxx方法must返回字段值：

def clean_exp_type(self):
    exp_type = self.cleaned_data.get('exp_type')
    if not exp_type:
        exp_type = self.initial['exp_type']
    return exp_type

具有值throw的django表单字段不能为null错误

1 个答案: