config/initializers/formtastic.rb


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  Formtastic::FormBuilder.i18n_lookups_by_default = true

module Formtastic
  module Inputs
    class CheckBoxesInput
      def selected_values
        if object.respond_to?(method)
          selected_items = [object.send(method)].compact.flatten

          # FIX for ids only
          return selected_items.map(&:to_s).compact if selected_items.all?{ |i| i.is_a? Integer} 

          [*selected_items.map { |o| send_or_call_or_object(value_method, o) }].compact
        else
          []
        end
      end
    end
  end
end