DjangoCreateView中的get_inital无法正常工作

我有一个CreateView，我希望它被调用并填充初始数据：

class StartGame(PermissionRequiredMixin,CreateView):
model = Author
fields = {'date_of_death'}
permission_required = 'catalog.can_mark_returned'
def get_initial(self):
# Get the initial dictionary from the superclass method
initial = super(StartGame,self).get_initial()
# Copy the dictionary so we don't accidentally change a mutable dict
initial = initial.copy()
initial['card'] = '0'
print(initial)
initial['bb'] = '0'
print(initial)
return initial


但是当我从urls.py调用它时，它只能作为。我尝试以不同的方式填充'card'：'0'，“ 0”，0-都一样：

模型看起来是这样

class Author(models.Model):
"""Model representing an author."""
card = models.CharField(max_length=100)
second_card = models.CharField(max_length=100)
date_of_birth = models.DateField(null=True,blank=True)
date_of_death = models.DateField('died',null=True,blank=True)
bb = models.IntegerField(default=0)
voted_id = models.CharField(max_length=1000,default="zero")


我只是不明白为什么它不起作用