About new standalone migration in rails 3.2.x

Rails
1

Hey guys,
I’m new to rails, and I using rails 3.2.8, follow this guide
Active Record Migrations — Ruby on Rails Guides,
I type

rails generate migration AddOriginCreatorToTags

in my terminal and got

invoke active_record
create db/migrate/20120820095010_add_original_creator_to_tags.rb

but I can’t find

add_column :tags, :origin_creator, :string

in 20120820095010_add_original_creator_to_tags.rb

2

On Monday, August 20, 2012 12:21:44 PM UTC+1, Yongning L. wrote:

invoke active_record
create db/migrate/20120820095010_add_original_creator_to_tags.rb

but I can’t find

add_column :tags, :origin_creator, :string

in 20120820095010_add_original_creator_to_tags.rb

It doesn’t infer the columns to add from the migration name - you have
to
specify those . In your case that would be

rails generate migration AddOriginCreatorToTags origin_creator:string

Fred

3

Thanks Fred, I forgot the

origin_creator:string

在 2012年8月21日星期二UTC+8上午2时49分34秒，Frederick C.写道：