您好我是DRF的新手,我可以使用外键序列化一个表,但是当涉及到多个字段时,在这种情况下:
包<> Package_product_atom <> Product_atom
我该如何处理这个?到目前为止我正在尝试的是:
class Product_atomSerializer(serializers.ModelSerializer):
class Meta:
model = Product_atom
ready_only = True
fields = ('id','title', 'title_override', 'price', 'price_override', 'description', 'description_override','image', 'image_override' ,'tags', 'product_alt', 'date_modified', 'date_created')
class PackageSerializer(serializers.ModelSerializer):
atomics = Product_atomSerializer(many=True)
class Meta:
model = Package
ready_only = True
fields = ('id', 'title', 'price', 'discount', 'image', 'tags', 'atomics', 'date_modified', 'date_created')
我的模特是:
class Product_atom(models.Model):
title = models.CharField(max_length=255, blank=False)
title_override = models.BooleanField(default=False, blank=False)
price = models.SmallIntegerField(default=0, blank=False)
price_override = models.BooleanField(default=False, blank=False)
description = models.TextField(blank=True)
description_override = models.BooleanField(default=False, blank=False)
image = models.ImageField(upload_to = 'uploads', default = '', blank=True)
image_override = models.BooleanField(default=False, blank=False)
tags = models.CharField(max_length=255, blank=False)
active = models.BooleanField(default=True, blank=False)
date_created = models.DateTimeField(auto_now_add=True)
date_modified = models.DateTimeField(auto_now=True)
product_alt = models.ForeignKey(Product_alt, related_name='atomics', on_delete=models.CASCADE)
default_provider = models.ForeignKey(Provider, on_delete=models.CASCADE)
def __str__(self):
return "{}".format(self.title)
class Package(models.Model):
title = models.CharField(max_length=255, blank=False)
price = models.SmallIntegerField(default=0, blank=False)
discount = models.SmallIntegerField(default=10, blank=False)
image = models.ImageField(upload_to = 'uploads', default = '', blank=True)
tags = models.CharField(max_length=255, blank=False)
active = models.BooleanField(default=True, blank=False)
date_created = models.DateTimeField(auto_now_add=True)
date_modified = models.DateTimeField(auto_now=True)
zone = models.ForeignKey(Zone, on_delete=models.CASCADE)
product_atom = models.ManyToManyField(Product_atom)
def __str__(self):
return "{}".format(self.title)
如果它是一个ForeignKey关系,哪个会工作,但是我无法使用ManyToManyField运行它,我得到的错误是:
AttributeError:尝试在序列化程序PackageSerializer上获取字段atomics的值时获得AttributeError . 序列化程序字段可能名称不正确,并且与Package实例上的任何属性或键都不匹配 . 原始异常文本是:'Package'对象没有属性'atomics' .
我在序列化一对多关系之前遇到此错误,但使用related_name修复了它 . 是否会使用通过自定义模型并将相关名称添加到那些修复它?谢谢!
1 回答
您是否尝试将变量名称'atomics'更改为'product_atom'?
根据您的Package类,'product_atom'没有相关名称'atomics' .