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问题：如何在Django模型中删除记录？
回答 0
回答 1
回答 2
回答 3
回答 4

问题：如何在Django模型中删除记录？

我要删除特定记录。如

delete from table_name where id = 1;

我怎么能做到这一点django model？

点击查看英文原文

I want to delete a particular record. Such as

delete from table_name where id = 1;

How can I do this in a django model?

回答 0

有两种方法：

要直接删除它：

SomeModel.objects.filter(id=id).delete()

要从实例中删除它：

instance = SomeModel.objects.get(id=id)
instance.delete()
点击查看英文原文

There are a couple of ways:

To delete it directly:

SomeModel.objects.filter(id=id).delete()

To delete it from an instance:

instance = SomeModel.objects.get(id=id)
instance.delete()

回答 1

MyModel.objects.get(pk=1).delete()

如果具有指定主键的对象不存在，这将引发异常，因为它首先会尝试检索指定的对象。

MyModel.objects.filter(pk=1).delete()

如果具有指定主键的对象不存在，并且不会直接产生查询，则不会引发异常

DELETE FROM my_models where id=1
点击查看英文原文 
MyModel.objects.get(pk=1).delete()

this will raise exception if the object with specified primary key doesn’t exist because at first it tries to retrieve the specified object.

MyModel.objects.filter(pk=1).delete()

this wont raise exception if the object with specified primary key doesn’t exist and it directly produces the query

DELETE FROM my_models where id=1

回答 2

如果要删除一项 

wishlist = Wishlist.objects.get(id = 20)
wishlist.delete()

例如，如果要删除收藏夹中的所有项目

Wishlist.objects.all().delete()
点击查看英文原文

If you want to delete one item 

wishlist = Wishlist.objects.get(id = 20)
wishlist.delete()

If you want to delete all items in Wishlist for example

Wishlist.objects.all().delete()

回答 3

如果要删除一个实例，请编写代码

delet= Account.objects.get(id= 5)
delet.delete()

如果要删除所有实例，请编写代码

delet= Account.objects.all()
delete.delete()
点击查看英文原文

if you want to delete one instance then write the code

entry= Account.objects.get(id= 5)
entry.delete()

if you want to delete all instance then write the code

entries= Account.objects.all()
entries.delete()

回答 4

沃尔夫提供了一个很好的答案集中代码。让我在这里粘贴官方文档，以供大家参考。

点击查看英文原文

Wolph provided a good answer focused codes. Let me just paste official doc here, for people’s reference.

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