仅获取创建日期的日期

Question

models.py

class UserWay(models.Model):
   user = models.ForeignKey(User, on_delete=models.CASCADE)
   created_at = models.DateField()

views.py

to_date = request.GET.get('to_date',None)
from_date = request.GET.get('from_date', None)
while to_date >= from_date:
     r = r + 1
     ws.write(0,r,current_date,style)
     to_date -= timedelta(days = 1)

用户将每天填写表单即将存储的表单。我的问题是需要显示填写表格日期范围的日期。每一天只有一次填写