如何在django视图和模型中的datefield中允许null？

Question

我的代码是：

In model:
claimed_date = models.DateField(null=True, blank=True)

In view:
claim_date = request.POST.get('date_totclaimfee','')

显示错误：

[U＆＃34;＆＃39;＆＃39;值具有无效的日期格式。它必须是YYYY-MM-DD格式。＆＃34;]

All fields in views.py:

shoes_date = request.POST.get('date_shoesfee','')
vvn_receipt = request.POST.get('bill_vvnfee','')
vvn_fees = request.POST.get(str(c)+'c_vvnfee','')
vvn_date = request.POST.get('date_vvnfee',''))

mODEL.PY:
shoes_date = models.DateField(null=True, blank=True)
vvn_receipt = models.CharField(max_length=10,null=True,blank=True)
vvn_fees = models.IntegerField(null=True,blank=True,)
vvn_date = models.DateField(null=True, blank=True)
claimed_date = models.DateField(null=True, blank=True)

Answer 1

尝试：

claim_date = request.POST.get('date_totclaimfee', None)