Rails: Modifying a Model Generated by Scaffolding
Rails 3 and above use the following code :
rails generate migration add_fieldname_id_to_tablename fieldname:stringRails 2
ruby script/generate migration add_fieldname_to_tablename fieldname:string This no longer works and returns the following error in Rails 3:
ruby: No such file or directory -- script/generate (LoadError)
ruby script/generate migration add_fieldname_to_tablename fieldname:stringthis is the shortcut method to do exactly what you want. if you need more control, or if you have a lot of columns to add, Andrew H's answer will work fine too.
The best answer I've found so far is run this from your project root:
ruby script/generate migration add_d_column_to_myModel Then edit the new migration file located in db/migration to look something like:
def self.up add_column :myModel, :d, :string end def self.down remove_column :myModel, :d endThe last step will be to update your views accordingly.
Answer found here
Table functions found here