DRF--序列化

为什么要用序列化

当我们做前后端分离的项目时，前后端交互一般都是JSON格式的数据，那么我们给前端的数据就要转为JSON格式，就需要我们拿到数据库后的数据进行序列化。在看DRF的序列化之前，先来看看django的序列化

from django.db import models

# Create your models here.

__all__ = ["Book", "Publisher", "Author"]


class Book(models.Model):
    title = models.CharField(max_length=32)
    CHOICES = ((1, "python"), (2, "Liunux"), (3, "Go"))
    category = models.IntegerField(choices=CHOICES)
    pub_time = models.DateField()
    publisher = models.ForeignKey(to="Publisher")
    authors = models.ManyToManyField(to="Author")


class Publisher(models.Model):
    title = models.CharField(max_length=32)

    def __str__(self):
        return self.title


class Author(models.Model):
    name = models.CharField(max_length=32)

    def __str__(self):
        return self.name

model.py