将manytomany字段插入db

Question

我想插入单个的声音到Room对象中，这样我就可以插入到数据库中。我该怎么做呢？

我试过了，Room（squawk = squawk object），但这似乎不起作用。

class Squawk(models.Model): 
    username = models.ForeignKey(User) 
    message = models.CharField(max_length=160) 
    time = models.DateTimeField(auto_now_add=True) 

    def __unicode__(self): 
     return str(self.username) + ' - ' + self.message 


class Room(models.Model): 
    title = models.CharField(max_length=160) 
    created = models.DateTimeField(auto_now_add=True) 
    users = models.ManyToManyField(User) 
    squawks = models.ManyToManyField(Squawk) 

    def __unicode__(self): 
     return self.title 

Answer 1

from django.shortcuts import get_object_or_404 

# get Room instance by id or raise 404 page if not found 
room = get_object_or_404(Room,pk = id) 
# add squawk to many-to-many relation 
room.squawks.add(squawk_object) 

https://docs.djangoproject.com/en/dev/ref/models/relations/