withhawaii

#The example below will easily get screwed up when your statements fails in the middle of migrations, i.e., fail after the line 9.
#It will require manual fix to recover your table to healthy state.   
#MySQL support does not support rollbacking DDL statements (Postgres does it though).

class UpdateUsers < ActiveRecord::Migration
  def change
    add_column(:users, :type, :string)
    remove_column(:users, :first_name)
    remove_column(:users, :last_name)
    rename_column(:users, :dob, :birth_date)

withhawaii

<%
  rake = File.split($0).last == 'rake'
  if rake
    begin
      STDOUT.puts "MySQL root Password:"
      password = STDIN.gets.strip.downcase
    end until password.length > 0
  end
%>

withhawaii

class Person < ActiveRecord::Base
  scope :matches, lambda {|conditions|
    where conditions.map {|key, value|
      if value.is_a? Array
        value.map {|v| arel_table[key].matches("%#{v}%")}
      else
        arel_table[key].matches("%#{value}%")
      end
    }.flatten.inject(:or)
  }

withhawaii

Paperclip::Attachment.default_options.update(
  {
    :path => ":class/:attachment/:hash/:style.:extension",
    :storage => :fog,
    :fog_credentials => {
        :provider            => 'OpenStack',
        :openstack_username  => 'user',
        :openstack_api_key   => 'password',
        :openstack_auth_url  => 'auth_url',
    },