class CustomManager(models.Manager):
def bulk_create(self, objs, **kwargs):
#Your code here
return super(models.Manager,self).bulk_create(objs,**kwargs)
Python3:
class CustomManager(models.Manager):
def bulk_create(self, objs, **kwargs):
#Your code here
return super().bulk_create(objs,**kwargs)
class Task(models.Model):
objects = CustomManager()
....
python 2中的完整答案:
class CustomManager(models.Manager):
def bulk_create(self, objs, **kwargs):
a = super(models.Manager,self).bulk_create(objs,**kwargs)
for i in objs:
post_save.send(i.__class__, instance=i, created=True)
return a
This method inserts the provided list of objects into the database in
an efficient manner (generally only 1 query, no matter how many
objects there are).
This has a number of caveats though:
The model’s save() method will not be called, and the pre_save and post_save signals will not be sent.
It does not work with child models in a multi-table inheritance scenario.
If the model’s primary key is an AutoField it does not retrieve and set the primary key attribute, as save() does.
It does not work with many-to-many relationships.
The batch_size parameter controls how many objects are created in single query. The default is to create all objects in one batch,
except for SQLite where the default is such that at most 999 variables
per query are used.
重复上面的答案:
Python2:
Python3:
python 2中的完整答案:
如前所述,
bulk_create
不会触发这些信号-https://docs.djangoproject.com/en/1.8/ref/models/querysets/#bulk-create
所以你必须手动触发它们。如果您希望所有模型都这样,您可以重写
bulk_create
,然后像这样自己发送它们-那就用这个经理-
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