我想将表单中的数据发布到数据库中。我不知道该怎么做。表单是由一个模型生成的，该模型有两个外键，我想在页面过程中为它们赋值。但它不起作用。有人知道吗？谢谢
我试过这个：
class Punishment(Page):
def vars_for_template(self):
return {'form': TokenForm()}
def post(self):
# context = super().get_context_data()
# context['formset'] = formset
# context['form'] = self.get_form()
form = TokenForm(self.request.POST)
if form.is_valid():
amountp = form.cleaned_data['amountp']
amountn = form.cleaned_data['amountn']
t = Token(amountp=amountp, amountn=amountn,
sender=self.player, receiver=self.player.get_others_in_group()[0])
t.save()
模型定义为：
class Token(djmodels.Model):
sender = djmodels.ForeignKey(to=Player, related_name='tokens_sent')
receiver = djmodels.ForeignKey(to=Player, related_name='tokens_received')
amountp = models.IntegerField(null=True, widget=forms.HiddenInput(), initial=0)
amountn = models.IntegerField(null=True, widget=forms.HiddenInput(), initial=0)
形式：
class TokenForm(ModelForm):
class Meta:
model = Token
fields = '__all__'
我得到一个错误：
AttributeError at /p/m0jnvjod/pggfg/Punishment/4/
'NoneType' object has no attribute 'get'
Request Method: POST
Request URL: http://localhost:8000/p/m0jnvjod/pggfg/Punishment/4/
Django Version: 1.11.2
Exception Type: AttributeError
Exception Value:
'NoneType' object has no attribute 'get'
Exception Location:
/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-
packages/django/utils/cache.py in patch_cache_control, line 68
Python Executable:
/Library/Frameworks/Python.framework/Versions/3.6/bin/python3.6
Python Version: 3.6.4
Python Path:
['/Users/lishuyan/Documents/Practicum/human-behavoir/Treatment1',
'/Library/Frameworks/Python.framework/Versions/3.6/lib/python36.zip',
'/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6',
'/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/lib-
dynload',
'/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-
packages']
Server time: Sun, 15 Jul 2018 06:20:37 +0000
Traceback Switch to copy-and-paste view
/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-
packages/django/core/handlers/exception.py in inner
response = get_response(request) ...
▶ Local vars
/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-
packages/django/core/handlers/base.py in _get_response
response = self.process_exception_by_middleware(e,
request) ...
▶ Local vars
/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-
packages/channels/handler.py in process_exception_by_middleware
return super(AsgiHandler,
self).process_exception_by_middleware(exception, request) ...
▶ Local vars
/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-
packages/django/core/handlers/base.py in _get_response
response = wrapped_callback(request, *callback_args,
**callback_kwargs) ...
▶ Local vars
/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-
packages/django/views/generic/base.py in view
return self.dispatch(request, *args, **kwargs) ...
▶ Local vars
/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-
packages/django/utils/decorators.py in _wrapper
return bound_func(*args, **kwargs) ...
▶ Local vars
/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-
packages/django/views/decorators/cache.py in _wrapped_view_func
response = view_func(request, *args, **kwargs) ...
▶ Local vars
/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-
packages/django/utils/decorators.py in bound_func
return func.__get__(self, type(self))(*args2, **kwargs2)
...
▶ Local vars
/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-
packages/django/utils/decorators.py in _wrapper
return bound_func(*args, **kwargs) ...
▶ Local vars
/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-
packages/django/views/decorators/cache.py in _cache_controlled
patch_cache_control(response, **kwargs) ...
▶ Local vars
/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-
packages/django/utils/cache.py in patch_cache_control
if response.get('Cache-Control'): ...
▶ Local vars
问题是post方法不返回任何内容，这会导致错误，因为oTree需要一个HttpResponse。
只需在post方法的末尾再添加一行：
return super().post()
它应该能工作