Question

我正在尝试将obj.html上复选框的动态选择发送到/ items函数。我遇到错误

"Select a valid choice. 1234 is not one of the available choices."

但是您会注意到，我从＃views.py打印选项的查询集，它输出的1234包含在平面查询集中，并带有引号。

print(form.fields['choices'].queryset)
# Console output
['1234', '1243',...]

为什么1234不是可用的选择之一？我已经尝试在输入表单中的value属性周围加上引号，但是它不起作用。项目功能停止，因为数据无效。我该怎么解决？

# forms.py
class ItemForm(forms.Form):
  choices = forms.ModelMultipleChoiceField(widget = forms.CheckboxSelectMultiple,
  queryset = Sampledata.objects.none())

# views.py
def obj(request, object_id,):
    data = Sampledata.objects.filter(id=object_id)
    form = ItemForm()
    form.fields['choices'].queryset = list(data.values_list('value', flat=True))
    print(form.fields['choices'].queryset)
    return render(request, 'obj.html', {'data':data,'form':form})

def items(request):
    if request.method == 'POST':
        form = ItemForm(request.POST)
        # check whether it's valid:
        if form.is_valid():
           ...

# obj.html
   <form action="/items" method="post">
   # Many of these spread out throughout the page
   {% for obj in data %}
   <input type="checkbox" name="choices" value="{{obj.value}}">
   {% endfor %}
   <input type="submit" value="Submit">

已更新，但仍然出现相同错误：

def items(request, object_id):
    if request.method == 'POST':
        # create a form instance and populate it with data from the request:
        form = ItemForm(request.POST)
        data = Sampledata.objects.filter(id=object_id)
        form.fields['choices'].queryset = (data.values_list('value', flat=True))
        # check whether it's valid:
        if form.is_valid():

Django ModelMultipleChoice验证错误

0 个答案: