Trying to add db parsing to enum and cast it correctly.

avram_enum.cr

module AvramEnum
  macro included
    def self.adapter
      Lucky
    end

    module Lucky
      alias ColumnType = Int32
      include Avram::Type

      def from_db!(value : Int32)
        {{@type}}.new(value)
      end

      def parse(value : String)
        {{@type}}.from_value(value.to_i)
      rescue ArgumentError
        FailedCast.new
      end

      def parse(value : Int32)
        {{@type}}.from_value(value)
      rescue ArgumentError
       FailedCast.new
      end

      def to_db(value : Int32)
        value.to_s
      end

      def to_db(value : Enum)
        value.value.to_s
      end

      class Criteria(T, V) < Avram::Criteria(T, V)
        @upper = false
        @lower = false
      end
    end
  end
end

struct Enum
  macro inherited
    include AvramEnum
  end
end