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Rails 3 gem to treat an attribute as a decimal (getting and setting floating-point values) but storing it as an integer in the database (useful for prices and other precision-needed attributes like money).
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 Dependencies

Development

>= 3.0.0
>= 2.5.0
>= 0

Runtime

>= 3.0.0
>= 3.0.0
 Project Readme

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 1.8.7, 1.9.2, Rubinius 2.0.0pre and JRuby 1.6.2.

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

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.

Copyright

Copyright (c) 2010 Codegram. See LICENSE for details.