顯示一個相關領域的屬性

Question

我怎麼會這樣做是爲了顯示ForeignKey的protected_area的名稱字段？：

class NotificationReceiverSerializer(serializers.ModelSerializer): 
    class Meta: 
     model = NotificationReceiver 
     fields = ('pk','cellphone', 'protected_area__name') 

所以，現在它只是顯示爲PK，符合市場預期：

protected_area":1 

Answer 1

試着這麼做這個。

class NotificationReceiverSerializer(serializers.ModelSerializer): 
    proteced_area = serializers.ReadOnlyField(source="protected_area.name") 

    class Meta: 
     model = NotificationReceiver 
     fields = ('pk','cellphone', 'protected_area') 

這會將protected_area名稱顯示爲只讀字段。另外，

class NotificationReceiverSerializer(serializers.ModelSerializer): 
    proteced_area = ProtectedAreaSerializer(read_only=True, many=True) 

    class Meta: 
     model = NotificationReceiver 
     fields = ('pk','cellphone', 'protected_area') 

顯示在相關模型中的所有字段