BitmaskAttributesHelpers

Quick and simple helpers for Joel Moss' bitmask_attributes gem. These helpers include frequently used checkers, setters, getters, and scopes pertaining to the bitmasks.

The best way to install is with RubyGems:

$ [sudo] gem install bitmask_attributes_helpers

Or better still, just add it to your Gemfile:

gem 'bitmask_attributes_helpers'

There are four class methods we use to install the requisite helpers: bitmask_presence_methods, bitmask_scopes, bitmask_virtual_attributes, and bitmask_helpers. Each takes the name of the bitmask as an argument.

  class Model < ActiveRecord::Base
    bitmask :colors, as: [:red, :blue, :green]

    bitmask_presence_methods :colors
    # Enables value checkers, i.e.
    # model.red? => true if model has the red bitmask attribute set

    bitmask_scopes :colors
    # Enables scopes to search Model by bitmask values, i.e.
    # Model.red => all models which have the red bit set to true
    # Model.not_red => all models which have the red bit set to false

    bitmask_virtual_attributes :colors
    # Creates a virtual attribute on the model for each value of the bitmask,
      i.e.
    # model.red = true => sets the red bitmask to true
    # model.red => true, as we've sets the bitmask to true

    bitmask_helpers :colors
    # This is a macro to enable all of the above for a specific bitmask
  ...

1. Fork it.
2. Create a branch (git checkout -b new-feature)
3. Make your changes
4. Run the tests (bundle install then bundle exec rake)
5. Commit your changes (git commit -am "Created new feature")
6. Push to the branch (git push origin new-feature)
7. Create a pull request from your branch.
8. Promote it. Get others to drop in and +1 it.

Joel Moss deserves all the credit for his wonderful bitmask_attributes gem

Copyright (c) 2013 Ryan Chan