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django - Django many 2 many through rest framework

问题描述

我正在做一个小项目，但我无法让序列化程序工作

我已经尝试过这些，但我不确定我做错了什么。我的模型是多对多的在此处输入图像描述

    #serializers.py
    class CompanyVisitedSerializer(serializers.HyperlinkedModelSerializer):

    company_id = serializers.ReadOnlyField(source="company.id")
    company_address = serializers.ReadOnlyField(source="company.business_address")
    company_name = serializers.ReadOnlyField(source="company.business_name")
    company_address = serializers.ReadOnlyField(source="company.business_address")
    checked_in = serializers.ReadOnlyField(source="user.checked_in")
    checked_out = serializers.ReadOnlyField(source="user.checked_out")

    class Meta:
        model = CompanyUser
        fields = (
            "checked_in",
            "checked_out",
            "company_name",
            "company_address",
            "company_id",
        )


class VisitorSerializer(serializers.ModelSerializer):

    # visited = CompanySerializer(many=True)
    visited = CompanyVisitedSerializer(
        many=True,
    )
    ```

但我把它拿回来空{}：

    {
  "address": "192 millie road",
  "city": "singapore",
  "phone": "2066980",
  ...
  "visited": [
    {}, //i want to populate this with { company: name_of_company, checkin, checkout}
    {}
  ]
}

我已经阅读了这些：

  1. https://bitbucket.org/snippets/adautoserpa/MeLa/django-rest-framework-manytomany-through
  2. Django：通过参数序列化具有多对多关系的模型

标签： djangodjango-rest-framework

解决方案

指向的模型visited是 a Company，而不是 a CompanyUser。如果您想使用CompanyUser，则关系为company_visited，因此：

class VisitorSerializer(serializers.ModelSerializer):
    visited = CompanyVisitedSerializer(
        source='company_visited',
        many=True
    )

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