ActsAsBits 
ActiveRecord plugin that maintains massive flags in one column
Table Definition
Add "string" column into your model table.
ALTER TABLE users ADD operations varchar(255);
Model Definition
class User < ActiveRecord::Base
acts_as_bits :operations, %w( create read update delete )
end
Usage
user = User.new
user.create? # => false
user.create = true
user.delete = true
user.operations # => "1001"
user.create? # => true
User.create!(:update => true, :read=>false)
Advanced
"(column_name)=" enables to fill up values with argument that is true/false. This is useful for initial setting like all allow/deny.
user = User.new
user.operations # => "0000"
# set all green
user.operations = true
user.operations # => "1111"
# set all red
user.operations = false
user.operations # => "0000"
Environment
tested on
- Rails 3.0.0 later
Author
moriq and maiha