带有durable_rules的Django rest-framework

Question

我正在尝试将耐用规则与我的 django restframework api 集成

我需要一些关于如何进行此操作的指导

比方说，我有一个班级学校、班级学生、班级地点

class School(models.Model):
schoolname = models.CharField(max_length=200)

class Location(models.Model):
locationname = models.CharField(max_length=200)

class Student(models.Model):
school = models.ForeignKey(School)
location = models.ForeignKey(Location)
studentname = models.CharField(max_length=200)
fees = models.IntegerField()

现在，我想制定规则说

if (schoolname = 'ABC' and location = 'xyz') then update fees = 1000
if (schoolname = 'SDS' and location = 'sdfs') then update fees = 200

如何使用耐用规则执行此操作？我的问题是我在哪里为它编写代码，在视图或序列化程序中。

任何示例代码都会有很大帮助

谢谢

现在以学校为准

Answer 1

class Student(models.Model):
  school = models.ForeignKey(School)
  location = models.ForeignKey(Location)
  studentname = models.CharField(max_length=200)
  fees = models.IntegerField()

  #You can overide the Student Model save method 
  def save(self, *args, **kwargs):
    if self.schoolname == 'ABC' and self.location = 'xyz':
        self.fees = 1000
    if self.schoolname = 'SDS' and self.location = 'sdfs':
        self.fees = 200
    super(Student, self).save(*args, **kwargs)

##你也可以使用 django 信号 post save 和 pre save.