如何将默认值添加到RoR迁移中的字段？(How do I add a default value to a field in a RoR migration?)

如何将默认值添加到RoR迁移中的字段？(How do I add a default value to a field in a RoR migration?)

如何将默认值添加到RoR迁移中的现有字段？

How do I add a default value to an existing field in a RoR migration?

最满意答案

我认为这会做到这一点

change_column :users, :active, :boolean, :default => 1

使用与创建列时相同的数据类型，但添加默认参数。

I think this would do the trick

change_column :users, :active, :boolean, :default => 1

Use the same data type as when you created the column but add the default parameter.

如何将默认值添加到RoR迁移中的字段？(How do I add a default value to a field in a RoR migration?)

如何将默认值添加到RoR迁移中的现有字段？

How do I add a default value to an existing field in a RoR migration?

最满意答案

我认为这会做到这一点

change_column :users, :active, :boolean, :default => 1

使用与创建列时相同的数据类型，但添加默认参数。

I think this would do the trick

change_column :users, :active, :boolean, :default => 1

Use the same data type as when you created the column but add the default parameter.