Django-Rest框架关系

ryanderon • 4 年前 • 727 次点击

(之前的问题: Django Rest Framework nested relationship )

我做了这样的序列化程序:

序列化程序.py

from rest_framework import serializers, fields

from .models import Pegawai,Barang


class BarangSerializer(serializers.ModelSerializer):
    class Meta:
        model = Barang
        fields = (
                'pegawai', 
                'nama_barang',
                'harga_barang',
                )

    def to_representation(self, instance):
        rep = super().to_representation(instance)
        rep['pegawai'] = instance.pegawai.name
        return rep

class PegawaiSerializer(serializers.ModelSerializer):
    barangs = BarangSerializer(read_only=True, many=True)
    class Meta:
        model = Pegawai
        fields = (
                'id',
                'name', 
                'alias',
                'barangs',
                )

结果:

{  
"pegawai": "Ryan",
    "nama_barang": "burjo",
    "harga_barang": "1234"
},

以及如何在发布数据时在barang API中生成这样的结果:

{
    "pegawai": {"id" : 1,
        "name" : "Ryan",
        "alias" : "R"}
    "nama_barang": "burjo",
    "harga_barang": "1234"
},

请帮忙,干杯。

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727 次点击

文章 [ 2 ] | 最新文章 4 年前

• 1 楼

Night Owl 4 年前

你有没有试过:

rep = super().to_representation(instance)

pegawai_obj = instance.pegawai
pegawai_data = {"id":pegawai_obj.id, "name":pegawai_obj.name, "alias":pegawai_obj.alias}
rep['pegawai'] = pegawai_data

return rep

但我不认为这是最好的解决办法。

• 2 楼

Arakkal Abu 4 年前

编写额外的序列化程序并将其连接到 to_representation(..) 方法,

class PegawaiShortSerializer(serializers.ModelSerializer):
    class Meta:
        model = Pegawai
        fields = (
            'id',
            'name',
            'alias',
        )


class BarangSerializer(serializers.ModelSerializer):
    class Meta:
        model = Barang
        fields = (
            'pegawai',
            'nama_barang',
            'harga_barang',
        )

    def to_representation(self, instance):
        rep = super().to_representation(instance)
        rep['pegawai'] = PegawaiShortSerializer(instance.pegawai).data
        return rep

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