AttributeChoices is a plugin that simplifies the common pattern of mapping a set of discreet values for an ActiveRecord model attribute, to a set of display values for human consumption.
In your Gemfile add
gem 'attribute_choices'
In environment.rb add:
config.gem 'attribute_choices'
Define your model:
class User < ActiveRecord::Base
attribute_choices :gender, { 'm' => "Male", 'f' => 'Female'}, :validate => true
attribute_choices :age_group, [
['18-24', '18 to 24 years old'],
['25-45', '25 to 45 years old']
]
end
Then try this in the console:
>> @john # User.new :gender => 'm', :age_group => '18-24', :name => 'John'
>> @john.gender
=> 'm'
>> @john.gender_display
=> 'Male'
>> User.gender_choices
=> [["Male", 'm'], ['Female', 'f']]
>> @john.valid?
=> true
>> @john.gender # 'o'
>> @john.valid?
=> false
=> I18n.locale # :es
>> @john.gender_display
=> "translation missing: es, Male"
>> @john.age_group_display
=> '18 to 24 years old'
>> User.age_group_choices
=> [['18-24', '18 to 24 years old], ['25-45', '25 to 45 years old']]
- Validate absence of _display and _choices methods
- Consider the usefulness of _choices# method
Copyright (c) 2009-2011 Christos Zisopoulos, released under the MIT license
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