Rails: convert anything to boolean

to_boolean.rb

# config/initializers/to_boolean.rb

module ToBoolean
  def to_bool
    return true if ActiveRecord::ConnectionAdapters::Column::TRUE_VALUES.include?(self)
    return false
  end
end

class NilClass; include ToBoolean; end
class TrueClass; include ToBoolean; end
class FalseClass; include ToBoolean; end
class Numeric; include ToBoolean; end
class String; include ToBoolean; end