Python 带有额外字段的Django rest框架序列化程序

我有一个django应用程序，我在其中使用django Rest框架

我有一个模型如下：

class Author(models.Model):
    first_name = models.CharField(max_length=30)
    last_name = models.CharField(max_length=40)
    email = models.EmailField()

    def __unicode__(self):
        return u'%s %s' % (self.first_name, self.last_name)

class AuthorSerializer(serializers.ModelSerializer):
    class Meta:
        model = Author
        fields = ('first_name', 'last_name', 'email')

author_detail = Author.objects.extra(select={'middle_name':'''SELECT middle_name from MyTable where MyTable.first_name = first_name'''})

我将序列化程序定义如下：

class Author(models.Model):
    first_name = models.CharField(max_length=30)
    last_name = models.CharField(max_length=40)
    email = models.EmailField()

    def __unicode__(self):
        return u'%s %s' % (self.first_name, self.last_name)

class AuthorSerializer(serializers.ModelSerializer):
    class Meta:
        model = Author
        fields = ('first_name', 'last_name', 'email')

author_detail = Author.objects.extra(select={'middle_name':'''SELECT middle_name from MyTable where MyTable.first_name = first_name'''})

在我看来，我有一个疑问如下：

class Author(models.Model):
    first_name = models.CharField(max_length=30)
    last_name = models.CharField(max_length=40)
    email = models.EmailField()

    def __unicode__(self):
        return u'%s %s' % (self.first_name, self.last_name)

class AuthorSerializer(serializers.ModelSerializer):
    class Meta:
        model = Author
        fields = ('first_name', 'last_name', 'email')

author_detail = Author.objects.extra(select={'middle_name':'''SELECT middle_name from MyTable where MyTable.first_name = first_name'''})

根据查询，我将在我的对象中获得一个名为

middle\u name

的额外字段。但是我不能再在结果对象上使用序列化程序，因为它不会在api中引入

middle\u name

---

如何修改序列化程序以获得

中间名称？
只需将该字段作为普通字段添加到序列化程序中即可

class AuthorSerializer(serializers.ModelSerializer):
    middle_name = serializers.CharField()
    class Meta:
        model = Author
        fields = ('first_name', 'last_name', 'middle_name', 'email')

我相信您甚至不需要定义，您应该能够将其添加到
Meta
中。医生是这么说的反正我没试过。