如何在Django Rest框架中显示字段值而不是外键id，以确保在DRF HTML表单中显示所有字段

Question

模型：

class Person(models.Model):
    first_name = models.CharField(max_length=20)
    last_name = models.CharField(max_length=20)
    
    def __str__(self):
        return self.first_name + ' ' + self.last_name
        
        
class Gender(models.Model):
    gender = models.CharField(max_length=1)
    
    def __str__(self):
        return self.gender
        
        
class Details(models.Model):
    name = models.ForeignKey(Person, on_delete=models.CASCADE)
    dob = models.DateField()
    gender = models.ForeignKey(Gender, on_delete=models.DO_NOTHING)

序列化程序：

class PersonSerializer(serializers.ModelSerializer):

    class Meta:
        model = Person
        fields = '__all__'


class GenderSerializer(serializers.ModelSerializer):

    class Meta:
        model = Gender
        fields = '__all__'


class ProfileSerializer(serializers.ModelSerializer):
    
    class Meta:
        model = Profile
        fields = ['name', 'dob', 'gender']

目前，我得到的输出低于输出，上面的内容如下：

[
    {
        "name": 1,
        "dob": "1990-05-19",
        "gender": 1
    }
]

其中id 1表示Person = "John“，id 1表示性别是”男性“。我有几种关于堆栈溢出的解决方案，如：

• How to get foreignkey field name insted of id in django rest framework
• Retrieving a Foreign Key value with django-rest-framework serializers

所有这些方法都可以工作，但是Django Rest Framework将外键设置为只读，这些字段不再出现在DRF表单中。我在这里的问题是如何显示外键字段值，而不是id --确保DRF表单仍然将这些字段显示为早期的。

Answer 1

如果您不打算覆盖to_representation()，可以创建一个SerializerMethodField

class ProfileSerializer(serializers.ModelSerializer):
    name = serializers.SerializerMethodField()

    class Meta:
        model = Profile
        fields = ['name', 'dob', 'gender']

    # this method is called to get the value of field `name`
    def get_name(self, profile):
          return profile.name.name