Colin, Thanks. You know, I first looked at Rails one year ago and knew this. But somehow I forgot it. Thanks for pointing knucklehead-me back to the basics. :)
I basically create new migrations and then db:migrate works like a charm. Thanks! On 17 Feb., 14:38, Colin Law <clan...@googlemail.com> wrote: > 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.
