Question

所以......我一直在敲打这个问题。尝试验证表单时，我遇到了最奇怪的错误。我将输入传递给想要在表单验证失败时测试行为的表单，即我希望它验证失败。

我有一个表格的代码：

class CTAForm(forms.Form):      
    first_name = forms.CharField(max_length=50)
    email = forms.EmailField()
    phone = forms.CharField(max_length=15, required=False, label='Phone (optional)')

我在视图中的某个地方进行此调用以处理表单数据。

if cta_form.is_valid():

我得到：

Exception Type:     TypeError
Exception Value:    'str' object is not callable
Exception Location:     /usr/lib/pymodules/python2.6/django/forms/forms.py in full_clean, line 246

Traceback显示了这一点：

/usr/lib/pymodules/python2.6/django/forms/forms.py   在full_clean：


除了ValidationError，e：

self._errors [name] = self.error_class（e.messages）...

▼本地变量
  变量值
  e：ValidationError（）
  字段：django.forms.fields.EmailField对象位于＆lt; 0x225c4d0c＆gt;

  名称：'电子邮件'
  self：blah.views.CTAForm对象位于＆lt; 0x2245b42c＆gt;
  价值：你''

我感觉很愚蠢。有人在这个问题上给我提供指导吗？感谢。

编辑：按要求提供更完整的观看代码

def cta_add(request):
    context_dict = {'categories': Category.objects.all().order_by('order'),}
    # we always expect to receive data via post
    if request.method =='POST':
        # get the current vid based on the parameter        
        current_vid = Video.objects.get(slug=request.POST['current_vid'])           
        # use this video to create our dynamic form so we get the valid cta values based on that video
        cta_form_class = make_cta_form(current_vid.cta_set.all().order_by('order'))
        # instantiate our new dynamic form based on the post data
        cta_form = cta_form_class(request.POST,  error_class='error')

        # if we got this far, we were able to generate a form to validate the user's input against.
        # If form validates, than process and take user to success screen           
        if cta_form.is_valid():

辅助函数make_cta_form在下面

def make_cta_form(cta_set):
    cta_list =[]
    if not cta_set is None:
        for cta in cta_set:
            cta_list.append((cta.text, cta.text))

    class CTAForm(forms.Form):
        cta = forms.MultipleChoiceField(widget=forms.CheckboxSelectMultiple, choices=cta_list, label='', required=False)
        first_name = forms.CharField(max_length=50)
        email = forms.EmailField()
        phone = forms.CharField(max_length=15, required=False, label='Phone (optional)')        

    return CTAForm

Answer 1

您收到有关字符串不可调用的错误，但您的表单的错误类是字符串，而不是错误类。

    cta_form = cta_form_class(request.POST,  error_class='error')

现在我在error_class中找到的文档中唯一的引用是作为字符串列表，所以你可以试试

    cta_form = cta_form_class(request.POST,  error_class=['error'])

虽然做一些像

这样的事情似乎更有意义

    import forms 
    [...]
    cta_form = cta_form_class(request.POST,  error_class=forms.ValidationError("error"))

或可能：

    cta_form = cta_form_class(request.POST,  error_class=forms.ValidationError)

Answer 2

在您的views.py文件中。当你得到表格（用户填写后）。这是你做的吗？

from your_app.forms import *

def process_form(request):
    cta_form = CTAForm(request.POST)

    if cta_form.is_valid():
        # your code.

您需要将表单的POST作为构造函数的初始值传递。

Django Forms验证错误 - TypeError'st'对象不可调用

2 个答案: