Ants Pants wrote: > isn't it t.add_column :new_names, :stirng > > http://api.rubyonrails.org/classes/ActiveRecord/Migration.html
Thanks for reply, Ants Pants. It is from a book, Foundation Rails 2 by Eldon Alameda. Here is the quote from the book: The most recent version of Rails has added yet another shortcut for us in this process as well with the addition of a change_table method. We can use this method in a block in the same way that we did with the create_table method. It supports a number of new convenience methods within the block as well, such as add_XXX (which allows you to easily add a new column, for example, calling add_string to add a new string field), add_timestamps (which adds the magic created_at and updated_at datetime fields), remove_column (which allows you to remove a column and can accept multiple fields), and rename (which allows you to rename the table). So we could have rewritten our last migration like this: def self.up change_table :comments do |t| t.add_string :name, :email, :website end end def self.down change_table :comments do |t| t.remove_column :name, :email, :website end end Very nice and very DRY. I need to add 10+ columns to database, and I remember the cleaner way from the book. So I gave it a try. But somehow an error occured. -- Posted via http://www.ruby-forum.com/. -- 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]. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
