ActiveRecord Enumerables
As part of the requirements for my Poll model in the Rails Rumble, I have a
few columns that need to be locked down to certain values. Rather than
repeating validates_presence_of and validates_inclusion_of over and over,
I threw together a quick plugin that does both of these as well as adds some
convenience methods.
You can find the plugin at http://github.com/ddollar/active-record-enumerable.git
class Food < ActiveRecord::Base
include ActiveRecordEnumerable
enumerate :type, :as => %w( fruit vegetable ), :default => 'foo'
enumerate :color, :as => %w( red green )
end
If :default is not specified, the first enumerator in the list is used.
>> f = Food.new
=> #<Food id: nil, type: "foo", color: "red">
>> f.save
=> true
>> f.color.red?
=> true
>> f.color.turquoise?
=> false
>> f.update_attributes!(:color => "random")
=> ActiveRecord::RecordInvalid: Validation failed: Color is not included in the list
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