Django REST框架DateTimeField格式，显示Python时间

给出了一些模型

class Loan(models.Model):
    time_of_loan = models.DateTimeField()
    username = models.CharField()

我尝试使用Django的REST框架中的

ModelSerializer

来序列化

贷款

class LoanSerializer(serializers.ModelSerializer):
    time_of_loan = serializers.DateTimeField(
    format=None, input_formats=['%Y-%m-%d %H:%M:%S',])
    class Meta:
        model = `Loan`
        fields = ['time_of_loan', 'username']

在使用

serializer.data

获取JSON格式时，当我第一次保存模型时，JSON表现良好

{
  'time_of_loan': '2016-06-20 00:00:00+08:00', 
  'username': 'doe'
}

但是，当我尝试更新模型时，它“行为不正常”，并且以python

datetime

格式出现

{
  'time_of_loan': datetime.datetime(2016, 6, 20, 7, 55, tzinfo=<UTC>), 
  'username': 'doe'
}

---

经过这么多的发现，我终于得到了答案

from rest_framework.renderers import JSONRenderer

serializer = LoanSerializer(loan_obj)
serializer.data
json = JSONRenderer().render(serializer.data)

---

你能告诉我你在做什么来更新object@marcusshep回答与更新！

from rest_framework.renderers import JSONRenderer

serializer = LoanSerializer(loan_obj)
serializer.data
json = JSONRenderer().render(serializer.data)