從多對多的關係獲取數據

Question

我有以下型號：

class Speaker(models.Model): 
    id_speaker = models.UUIDField(primary_key=True) 
    name = models.TextField() 

class Session(models.Model): 
    id_session = models.UUIDField(primary_key=True) 
    name = models.TextField() 
    speakers = models.ManyToManyField(Speaker) 

當我查詢Session.objects.all()，我的下一個採樣數據：

{ 
    "id_session": "UUID", 
    "name": "Example name", 
    "speakers": [ 
    { 
     "id_speaker": "UUID", 
     "name": "John Doe" 
    } 
    ] 
} 

正如你看到的，我有發言者名單現在的問題是，我怎樣才能得到發言者的會議，我想要的一個例子：

{ 
    "id_speaker": "UUID", 
    "name": "John Doe", 
    "sessions": [ 
     { 
      "id_session": "UUID", 
      "name": "Example name" 
     } 
    ] 
} 

如果你想知道我是否使用django-rest-framework，答案是YES。

Answer 1

嘗試related_nameDjango Related Name

通知的related_name kwarg在ManyToManyField

class Speaker(models.Model): 
    id_speaker = models.UUIDField(primary_key=True) 
    name = models.TextField() 

class Session(models.Model): 
    id_session = models.UUIDField(primary_key=True) 
    name = models.TextField() 
    speakers = models.ManyToManyField(Speaker, related_name='sessions') 

然後你就可以得到所有會話從揚聲器對象的回答

some_speaker.sessions.all() #Returns sessions 

Answer 2

呃不能改變模型的結構嗎？

class Session(models.Model): 
    id_session = models.UUIDField(primary_key=True) 
    name = models.TextField() 


class Speaker(models.Model): 
    id_speaker = models.UUIDField(primary_key=True) 
    name = models.TextField() 
    session = models.ManyToManyField(Session) 

不知道我是否正確理解你的問題。