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： > > 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 > -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msg/rubyonrails-talk/-/3VGn038yCiUJ. For more options, visit https://groups.google.com/groups/opt_out.
