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13问答网 > django 数据模型中 null=True 和 blank=True 有什么区别

django 数据模型中 null=True 和 blank=True 有什么区别

2025-03-15 11:55:12

推荐回答（2个）

回答1：

null：
If True, Django will store empty values as NULL in the database. Default
is False.
如果为True，空值将会被存储为NULL，默认为False。

blank：
If True, the field is allowed to be blank. Default is False.
如果为True，字段允许为空，默认不允许。

回答2：

其实这种问题去django官网一搜索就搜索出来了
null是和数据库相关的，blank是和页面表单验证相关的。
null = True 表示空值将会被存储为NULL

blank = True 表示在页面当中对应的表单可以为空，可以不填任何内容

官网关于该知识的链接：
https://docs.djangoproject.com/en/dev/ref/models/fields/#null

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