1. model.py中，添加id = models.AutoField(primary_key=True)

'''
class Car(models.Model):
id = models.AutoField(primary_key=True)
name = models.CharField(max_length=100)
top_speed = models.IntegerField()
'''

2. view.py中，调用相应参数(示例代码中为car.id)

'''
car = Car(name=car_name, top_speed=top_speed)
try:
car.save()
response = json.dumps([{ 'Success': 'Car added successfully!', 'id': car.id}])
'''