Django Rest框架，Relations选项名

Question

想知道如何显示专辑的名称，而不是“相册对象”在帖子轨道‘相册’选项，参考下面的图像。

PM.png

这是我的模型和序列化器。

models.py

class Album(models.Model):
    name = models.CharField(max_length=100)
    artist = models.CharField(max_length=100)
    year = models.CharField(max_length=4)
    origin = models.CharField(max_length=50)

class Track(models.Model):
    album = models.ForeignKey(Album, related_name='tracks')
    order = models.IntegerField()
    title = models.CharField(max_length=100)
    duration = models.IntegerField()

    class Meta:
        unique_together = ('album', 'order')
        ordering = ('order',)

    def __unicode__(self):
        return '%d: %s' % (self.order, self.title)

serializers.py

class TrackSerializer(serializers.ModelSerializer):

    class Meta:
        model = Track
        fields = ('order', 'title', 'duration','album')

class AlbumSerializer(serializers.ModelSerializer):
    tracks = TrackSerializer(many=True, read_only=True)

    class Meta:
        model = Album
        fields = ('name', 'artist', 'year', 'origin', 'tracks')

相册数据(示例)：

[
    {
        "name": "Album1", 
        "artist": "Artist1", 
        "year": "2012", 
        "origin": "Somewhere", 
        "tracks": []
    }, 
    {
        "name": "Album2", 
        "artist": "Artist2", 
        "year": "2014", 
        "origin": "Somewhere", 
        "tracks": []
    }
]

提前谢谢你

Answer 1

您可以通过在模型中定义方法__str__ (或在Python2中定义__unicode__ )来自定义此标签：

class Album(models.Model):
    name = models.CharField(max_length=100)
    artist = models.CharField(max_length=100)
    year = models.CharField(max_length=4)
    origin = models.CharField(max_length=50)


    def __str__(self):
         return "%s (by %s)" % (self.name, self.artist)

每当Django必须打印对此对象的引用(包括Django -rest-框架和Django管理)时，就会使用此函数。

Answer 2

您可以使用CustomRelatedField来控制如何在Django REST框架中显示对象，而不必更改模型的__str__或__unicode__方法。

http://www.django-rest-framework.org/api-guide/relations/#custom-relational-fields