On 17 February 2010 13:12, lukas <lukas.zielin...@googlemail.com> wrote: > Hello, > > I have a problem understanding Rails/Rake migrations. > > For example let's say I have a migrate-script like this: > > class CreateUsers < ActiveRecord::Migration > def self.up > create_table :users do |t| > t.string :name > t.string :username > t.string :password > t.string :email > t.timestamps > end > > User.create :name=>"John > Smith", :email=>"j...@fakedomain.com", :username=>"js", :password="jsRules!" > end > > def self.down > drop_table :users > end > end > > > If I do a migration with db:reset it will update all tables, DELETE > EVERYTHING, and then insert John Smith. > > However, let's say I want to add a > > t.string :secret_answer > > to that model, and migrate it, what do I use? > > I would like to keep all data already in DB and just have rake add one > column to the table. > > > I tried migrate:redo, migrate.up etc. The latter even requires a > Version value. What do I enter here?
To apply migrations that have not already been applied use rake db:migrate http://guides.rubyonrails.org/ has a guide on migrations, but start with Getting Started if you have not already worked through that. Then work through the others. Colin -- 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 rubyonrails-t...@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
