acts_as_decimal

A simple gem for Rails 3 to make an attribute behave like it is floating point, being stored as an integer in the database. Tested with Ruby 1.8, 1.9 and Rubinius 1.1.

Add it to your Gemfile:

gem 'acts_as_decimal'

And put this in your model, let’s say a Product with a :price attribute:

class Product < ActiveRecord::Base
  acts_as_decimal :price                    # Defaults to 2 decimal floating point values, or...
  acts_as_decimal :price, :decimals => 5    # ...as you wish!
end

Now you store and retrieve :price as a floating point:

product = Product.new
product.price = 12.30   
product.price              # => 12.30

But you still have access to the raw database integer value through :price_raw:

product.price_raw          # => 1230
product.price_raw = 4309   # product.price == 43.09

Furthermore, you get some nice humanizers for free. Note that all humanizers return a string, not a float.

product = Product.new
product.price = 3900400.40
product.humanized_price                                  # => "3.900.400,40"
product.humanized_price(:thousand_delimiters => false)   # => "3900400.40"

Note on Patches/Pull Requests

Fork the project.
Make your feature addition or bug fix.
Add tests for it. This is important so I don’t break it in a future version unintentionally.
Commit, do not mess with rakefile, version, or history. (if you want to have your own version, that is fine but bump version in a commit by itself I can ignore when I pull)
Send me a pull request. Bonus points for topic branches.

acts_as_decimal

Note on Patches/Pull Requests

Copyright