我正在尝试从表单std::terminate
获取数据,但数据中的一个值导致错误:
POST
表单数据:
ipdb> request.POST
<QueryDict: {'assign_to-autocomplete': [''], 'tasks': ['18'], 'csrfmiddlewaretoken': ['lVqkbkYdz42uTtLJviRIj3OukcwqsdvI'], 'assign_to': ['14'], 'action_type': ['assign_to']}>
我在ipdb> self.form.data
{'assign_to-autocomplete': [''], 'tasks': ['18'], 'csrfmiddlewaretoken': ['lVqkbkYdz42uTtLJviRIj3OukcwqsdvI'], 'assign_to': ['14'], 'action_type': ['assign_to']}
字段使用autocomplete_light
,这是assign_to
。
User
是一个pks列表,这似乎导致了一个问题。
views.py:
assign_to
forms.py:
class TasksPreviewView(MyMixin, FormView):
''' An intermediate page '''
template_name = 'tasks/task_preview.html'
def post(self, request):
import ipdb; ipdb.set_trace()
self.action_type = request.POST['action_type']
form_class = self.get_form()
self.form = form_class(data=dict(request.POST))
if self.form.is_valid():
return self.form_valid(self.form)
else:
return self.form_invalid(self.form)
因此,我的表单始终无效,因为它不期望列表:
class TaskBulkAssignToForm(forms.ModelForm):
tasks = forms.ModelMultipleChoiceField(queryset=Task.objects.all(), label='')
assign_to = al.ModelChoiceField('UserStaffAutocomplete', queryset=User.objects.all(), required=True, label='Select a user')
def __init__(self, *args, **kwargs):
''' Filter down to the tasks of interest and set tasks as a hidden field '''
super().__init__(*args, **kwargs)
task_pks = (self.initial or self.data)['tasks']
self.fields['tasks'].queryset = self.fields['tasks'].queryset.filter(
pk__in=task_pks,
)
self.fields['tasks'].widget.attrs['class'] = 'hidden'
def post_valid(self):
''' Called by form_valid '''
# Do some processing
# Return a success message
def post_invalid(self):
''' Called by form_invalid '''
# Return an error message
class Meta:
model = Task
fields = ('tasks', 'assign_to')
django.core.exceptions.ValidationError: ['Select a valid choice. That choice is not one of the available choices.']
代替user_pk
'14'
,而['14']
传递request.POST
。如果我手动将值调整为'14'
而不是['14']
和continue
,则表单会按预期效果很好。
对于某些上下文,TasksPreviewView
是一种中间页面,类似于Django admin page。每个批量操作都有自己的表单(在本例中为assign_to
操作)。第一页重定向到带有表单的中间页面,但保留GET中的所有对象。第二页(确认页面)执行POST
。任何人都可以帮我解决这个问题吗?
答案 0 :(得分:2)
您应该能够直接传递request.POST
,而不是将dict
转换为self.form = form_class(data=request.POST)
:
例如:
<button id="myButton" onclick="alert('Hi!')">
这是因为request.POST是MultiValueDict的一个实例,它允许每个键有多个值。