Django
我有下一个型号:
class Group(models.Model):
name = models.CharField(max_length=100)
parent_group = models.ManyToManyField("self", blank=True)
def __unicode__(self):
return self.name
class Block(models.Model):
name = models.CharField(max_length=100)
app = models.CharField(max_length=100)
group = models.ForeignKey(Group)
def __unicode__(self):
return self.name
比如说，挡路b1有g1群.按照它的名字，我想从g1组得到all blocks.我编写了下一个递归函数:
def get_blocks(group):
def get_needed_blocks(group):
for block in group.block_set:
blocks.append(block)
if group.parent_group is not None:
get_needed_blocks(group.parent_group)
blocks = []
get_needed_blocks(group)
return blocks
但是b1.group.block_set会返回RelatedManager个对象，它是不可迭代的.
该怎么办呢？怎么了？