Re: About new standalone migration in rails 3.2.x

[Frederick Cheung]

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

Hey guys, 

I'm new to rails, and I using rails 3.2.8, follow this guide http://guides.rubyonrails.org/migrations.html#creating-a-standalone-migration, 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

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

[Yongning Liang]

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 Cheung写道：