如何在Django Rest框架中获取ID的外键字段名称insted [英] How to get foreignkey field name insted of id in django rest framework

问题描述

这是我的模型。py

from __future__ import unicode_literals
from django.db import models

class User(models.Model):
    name = models.CharField(max_length=200)
    company_name = models.ForeignKey('Company',on_delete=models.CASCADE,related_name='user')

    def __str__(self):
        return self.name

class Company(models.Model):
    name = models.CharField(max_length=200)
    phone_number = models.IntegerField(null=True,blank=True)

    def __str__(self):
        return self.name

class Catalog(models.Model):
    name = models.CharField(max_length=200)
    no_of_pcs = models.IntegerField(null=True,blank=True)
    per_piece_price = models.DecimalField(null=True,blank=True,max_digits=10,decimal_places=2)
    company_name = models.ForeignKey(Company,on_delete=models.CASCADE,related_name='catalog')

    def __str__(self):
        return self.name

这是我的serializers.py

here is my serializers.py

from rest_framework import serializers
from .models import *
from django.db.models import Sum,Count

class UserSerializer(serializers.ModelSerializer):
    # name = serializers.StringRelatedField()
    # company_name = serializers.CharField()
    class Meta:
        model = User
        fields = '__all__'

这是我的观点。py

from __future__ import unicode_literals
from django.http import HttpResponse
from .models import *
import json
from django.http import JsonResponse, HttpResponse
from .serializers import *
from rest_framework.views import APIView
from rest_framework.response import Response
from rest_framework import status
from rest_framework import viewsets

class UserView(viewsets.ModelViewSet):
    queryset =  User.objects.all()
    serializer_class = UserSerializer

我正在获取这样的api ..
在这里，我得到的是id而不是company_name。

I am getting api like this.. Here i am getting id instead of company_name.

[
    {
        "id": 1,
        "name": "soubhagya",
        "company_name": 1
    },
    {
        "id": 2,
        "name": "nihar",
        "company_name": 2
    }
]

但是我期望输出-

像这样：

[
    {
        "id": 1,
        "name": "soubhagya",
        "company_name": "google"
    },
    {
        "id": 2,
        "name": "nihar",
        "company_name": "facebook"
    }
]

我期望我的api这样。与company_name。
而且我想在其余框架中发布来自同一api的数据
谢谢，

I am expecting my api like this. with company_name. And i wants to post the data from same api in rest framework thanks,,

推荐答案

您已经在 Company 中定义了 __ str __（） 方法strong>模型，则可以使用 StringRelatedField（） as

Since you'd defined the __str__() method in your Company model, you can use the StringRelatedField() as

class UserSerializer(serializers.ModelSerializer):
    company_name = serializers.StringRelatedField()
    class Meta:
        model = User
        fields = '__all__'

更新

覆盖 to_representation 方法

UPDATE
override the to_representation method

class UserSerializer(serializers.ModelSerializer):
    class Meta:
        model = User
        fields = '__all__'

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

这篇关于如何在Django Rest框架中获取ID的外键字段名称insted的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！