Question

i am new to ROR, just setup the enviroment
ruby 1.9.2 with rails 3.0.6

just notice one thing.
after create model.. propeties has been add into database but couldn`t see from the class..
and it just work for me.

looks like rails will scan my database schema before launching the application..

but i have a question for it:

if i frequently add or remove columns…
how do i know what properties do i have if i do not define in the class?
can i manually add properties into ActiceRecord class(es) ??

class User < ActiveRecord::Base
  has_one :contact
  validates_confirmation_of :password
end



class CreateUsers < ActiveRecord::Migration
  def self.up
    create_table :users do |t|
      t.string :username
      t.string :password

      t.timestamps
    end
  end

  def self.down
    drop_table :users
  end
end

Answer 1

i;m not sure i understand the question, but you can just view the schema.rb

any migration that you make will update the schema