Python 选择有效选项。[<；selection>；]不是可用选项之一。错误
我想要的是多个被选择的Anwser被保存并提交到DB 然而，我在每一个问题上都犯了这个错误 my models.pyPython 选择有效选项。[<；selection>；]不是可用选项之一。错误,python,django,modelform,Python,Django,Modelform,我想要的是多个被选择的Anwser被保存并提交到DB 然而，我在每一个问题上都犯了这个错误 my models.py class preferences(models.Model): cuisine = ( (1,u'Italian'), (2,u'American'), (3,u'French'), (4,u'Japanese'), (5,u'Russian'), (6,u'Chinese'
class preferences(models.Model):
cuisine = (
(1,u'Italian'),
(2,u'American'),
(3,u'French'),
(4,u'Japanese'),
(5,u'Russian'),
(6,u'Chinese'),
(7,u'Mexican'),
(8,u'Indian'),
(9,u'Middle Eastern'),
(10,u'Thai'),
(11,u'Spanish')
)
vegeterian = (
(1,u'Yes'),
(2,u'No'),
(3,u'I appreciate both')
)
lunch = (
(1,u'Cafe'),
(2,u'Restaurant'),
(3,u'Fast Food'),
(4,u'Takeaway'),
(5,u'Grocery/Lunch Box')
)
dinner = (
(1,u'Inexpensive Restaurant'),
(2,u'Fine Dining'),
(3,u'Takeaway'),
(4,u'Fast Food'),
(5,u'Delivery'),
(6,u'Cooking at home'),
(7,u'Cheeky Bar') #Make it with a hint that having a dinner w/ a cheeky pint
)
Friday = (
(1,u'Bar'),
(2,u'Night club'),
(3,u'Karaoke'),
(4,u'Netflix & chill'),
(5,u'Video games'),
(6,u'Cinema'),
(7,u'Theater'),
(8,u'Restaurant'),
)
weekend = (
(1,u'Hiking'),
(2,u'Sport activities'),
(3,u'Attending sport events'),
(4,u'Music events'),
(5,u'Art/Science exhibitions'),
(6,u'Chilling at the park'),
(7,u'Video games'),
(8,u'Cinema'),
(9,u'Theater'),
(10,u'Chilling at home')
)
UserID = models.ForeignKey(User,related_name='User', null=True,default='')
cuisine = models.ManyToManyField('self',choices=cuisine, max_length=20,blank=False,default='')
cuisine_extra = models.CharField(max_length=25)
vegeterian = models.CharField(max_length=15,choices=vegeterian)
lunch = models.ManyToManyField('self',choices=lunch,max_length=20,blank=False,default='')
dinner = models.ManyToManyField('self',choices=dinner,max_length=20,blank=False,default='')
Friday = models.ManyToManyField('self',choices=Friday,max_length=20,blank=False,default='')
weekend = models.ManyToManyField('self',choices=weekend,max_length=40,blank=False,default='')
class preferencesForm(ModelForm):
"""def __init__(self, *args, **kwargs):
super(preferencesForm, self).__init__(*args, **kwargs)"""
class Meta:
model = preferences
fields = ['cuisine', 'cuisine_extra', 'vegeterian', 'lunch', 'dinner', 'Friday', 'weekend']
widgets = {
'cuisine':forms.widgets.CheckboxSelectMultiple,
'lunch':forms.widgets.CheckboxSelectMultiple,
'dinner':forms.widgets.CheckboxSelectMultiple,
'Friday':forms.widgets.CheckboxSelectMultiple,
'weekend':forms.widgets.CheckboxSelectMultiple,
}
form = preferencesForm()
M2Mfield模型（“self”）上使用它
modelform.py
class preferences(models.Model):
cuisine = (
(1,u'Italian'),
(2,u'American'),
(3,u'French'),
(4,u'Japanese'),
(5,u'Russian'),
(6,u'Chinese'),
(7,u'Mexican'),
(8,u'Indian'),
(9,u'Middle Eastern'),
(10,u'Thai'),
(11,u'Spanish')
)
vegeterian = (
(1,u'Yes'),
(2,u'No'),
(3,u'I appreciate both')
)
lunch = (
(1,u'Cafe'),
(2,u'Restaurant'),
(3,u'Fast Food'),
(4,u'Takeaway'),
(5,u'Grocery/Lunch Box')
)
dinner = (
(1,u'Inexpensive Restaurant'),
(2,u'Fine Dining'),
(3,u'Takeaway'),
(4,u'Fast Food'),
(5,u'Delivery'),
(6,u'Cooking at home'),
(7,u'Cheeky Bar') #Make it with a hint that having a dinner w/ a cheeky pint
)
Friday = (
(1,u'Bar'),
(2,u'Night club'),
(3,u'Karaoke'),
(4,u'Netflix & chill'),
(5,u'Video games'),
(6,u'Cinema'),
(7,u'Theater'),
(8,u'Restaurant'),
)
weekend = (
(1,u'Hiking'),
(2,u'Sport activities'),
(3,u'Attending sport events'),
(4,u'Music events'),
(5,u'Art/Science exhibitions'),
(6,u'Chilling at the park'),
(7,u'Video games'),
(8,u'Cinema'),
(9,u'Theater'),
(10,u'Chilling at home')
)
UserID = models.ForeignKey(User,related_name='User', null=True,default='')
cuisine = models.ManyToManyField('self',choices=cuisine, max_length=20,blank=False,default='')
cuisine_extra = models.CharField(max_length=25)
vegeterian = models.CharField(max_length=15,choices=vegeterian)
lunch = models.ManyToManyField('self',choices=lunch,max_length=20,blank=False,default='')
dinner = models.ManyToManyField('self',choices=dinner,max_length=20,blank=False,default='')
Friday = models.ManyToManyField('self',choices=Friday,max_length=20,blank=False,default='')
weekend = models.ManyToManyField('self',choices=weekend,max_length=40,blank=False,default='')
class preferencesForm(ModelForm):
"""def __init__(self, *args, **kwargs):
super(preferencesForm, self).__init__(*args, **kwargs)"""
class Meta:
model = preferences
fields = ['cuisine', 'cuisine_extra', 'vegeterian', 'lunch', 'dinner', 'Friday', 'weekend']
widgets = {
'cuisine':forms.widgets.CheckboxSelectMultiple,
'lunch':forms.widgets.CheckboxSelectMultiple,
'dinner':forms.widgets.CheckboxSelectMultiple,
'Friday':forms.widgets.CheckboxSelectMultiple,
'weekend':forms.widgets.CheckboxSelectMultiple,
}
form = preferencesForm()
我试着用\uuuu init\uuuuu
来做这件事，但也没用。在这一点上，我迷路了
视图.py
def display_form(request):
if not request.user.is_authenticated:
return redirect(settings.LOGIN_URL)
if request.method == 'POST':
form = preferencesForm(request.POST)
if form.is_valid():
form.UserID = request.user
form.save()
return HttpResponseRedirect('/')
else:
form = preferencesForm()
return render(request,'display.html',{'form':form})
views.py应该可以，但以防万一
错误如下所示
选择一个有效的选项。[u'3'，u'9']不是可用的
选择
（选择取决于所选选择的数量，但想法相同）
我也试着把整数改成字符串，但也没用。
还尝试了[u'1']
等，但也不起作用
我知道我可以使用multiselectfield库，但这对我的数据库不好，因为存储多个实例不是一个好主意。
我发现有很多类似的错误，但没有一个对我有帮助：/
非常感谢您的帮助！谢谢
错误是您的字段没有意义。多对多字段是模型之间的关系，其中每一方可以有多个项。它不是选项列表中的一组项
您应该使用CommaseParatedIntegraterField，使用来验证项是否为整数。我们真的需要所有代码来调试吗？@Ev.Kounis我刚刚发布了这篇文章，以防万一，因为我真的不知道到底是什么导致了这个问题。是的，但是您认为有多少人愿意经历它？嗯，我很乐意把它缩短，如果我想知道我到底从这里剪了什么，我猜模板是可移动的，但是idk关于其他东西，告诉我们哪一行至少会引起错误怎么样？？