具有内部关系的Django rest_framework串行器 [英] Django rest_framework serializer with inner relationship

问题描述

这里有一部分 models.py：

  class Discount（models.Model） 
 discount_id = models.AutoField（primary_key = True）
 discount_category = models.ManyToManyField（Category）
 discount_store = models.ManyToManyField（Store）
 ... 
 
 class Store（models.Model）：
 store_id = models.AutoField（primary_key = True）
 store_company = models.ForeignKey（'Company'）
 store_city = models.ForeignKey（'城市'，to_field ='city_name'）
 .... 
  

serializer.py：，

  class StoreSerializer（serializers.ModelSerializer）：
 class Meta ：
 model = Store 
 fields =（'store_location'，'store_city'，'store_name'，'store_address'）
 
 
 class DiscountSerializer（serializers.ModelSerializer） ：
 class Meta：
 model = Discount 
 fields =（'discount_descrip 
  

当我创建JSON的折扣我得到这个JSON。

  [{
discount_description：此处的说明。 ，
discount_start：2014-08-07T14：35：13Z，
discount_end：2014-08-30T14：35：15Z，
discount_title Loremİpsum，
discount_category：[
 3 
]，
discount_store：[
 1 
] 
}] 
  

但是我想在discount_store中查看商店详细信息。我为此尝试了很多关系。但是所有的时间我得到这个JSON。

解决方案

你尝试添加选项 depth 到Meta类？可能是这样的：

  class DiscountSerializer（serializers.ModelSerializer）：
 class Meta：
 model = Discount 
 fields =（'discount_description'，'discount_start'，'discount_end'，'discount_title'，'discount_category'，'discount_store'）
 depth = 1 
  / pre> 
Here part of my models.py:
class Discount(models.Model):
    discount_id = models.AutoField(primary_key=True)
    discount_category = models.ManyToManyField(Category)
    discount_store = models.ManyToManyField(Store)
    ...

class Store(models.Model):
    store_id = models.AutoField(primary_key=True)
    store_company =models.ForeignKey('Company')
    store_city = models.ForeignKey('City', to_field='city_name')
    ....
Here part of my serializer.py:,
class StoreSerializer(serializers.ModelSerializer):
class Meta:
    model = Store
    fields = ('store_location', 'store_city', 'store_name', 'store_address')


class DiscountSerializer(serializers.ModelSerializer):
    class Meta:
        model = Discount
        fields = ('discount_description', 'discount_start', 'discount_end', discount_title', 'discount_category', 'discount_store')
When I create JSON for discount I get this JSON.
[{
    "discount_description": "Description here.",
    "discount_start": "2014-08-07T14:35:13Z",
    "discount_end": "2014-08-30T14:35:15Z",
    "discount_title": "Lorem İpsum",
    "discount_category": [
        3
    ],
    "discount_store": [
        1
    ]
}]
But I want to see store details in "discount_store". I tried a lot of relationship for this. But all the time I get this JSON.
解决方案
Did you try to add the option depth to the Meta class? Maybe like this:
class DiscountSerializer(serializers.ModelSerializer):
    class Meta:
        model = Discount
        fields = ('discount_description', 'discount_start', 'discount_end', 'discount_title', 'discount_category', 'discount_store')
        depth = 1


                        
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