Saving enum from select in Rails 4.1

Question

I am using the enums in Rails 4.1 to keep track of colors of wine.

Wine.rb

class Wine < ActiveRecord::Base
    enum color: [:red,         


        

Answer 1

I just put together an EnumHelper that I thought I'd share to help people who need more customised enum labels and locales for your enum selects.

module EnumHelper

  def options_for_enum(object, enum)
    options = enums_to_translated_options_array(object.class.name, enum.to_s)
    options_for_select(options, object.send(enum))
  end

  def enums_to_translated_options_array(klass, enum)
    klass.classify.safe_constantize.send(enum.pluralize).map {
        |key, value| [I18n.t("activerecord.enums.#{klass.underscore}.#{enum}.#{key}"), key]
    }
  end

end

In your locale:

 en:
   activerecord:
     enums:
      wine:
        color:
          red:   "Red Wine"
          white:  "White Wine"

In your views:

 <%= f.select(:color, options_for_enum(@wine, :color)) %>

Answer 2

The accepted solution didn't work for me for the human readable, but I was able to get it to work like this:

<%= f.select(:color, Wine.colors.keys.map {|key| [key.humanize, key]}) %>

This was the cleanest, but I really needed to humanize my keys:

<%= f.select(:color, Wine.colors.keys) %>