lib/action_view/helpers/tags/placeholderable.rb


module ActionView
  module Helpers
    module Tags # :nodoc:
      module Placeholderable # :nodoc:
        def initialize(*)
          super

          if tag_value = @options[:placeholder]
            placeholder = tag_value if tag_value.is_a?(String)
            method_and_value = tag_value.is_a?(TrueClass) ? @method_name : "#{@method_name}.#{tag_value}"

            placeholder ||= Tags::Translator
              .new(object, @object_name, method_and_value, scope: "helpers.placeholder")
              .translate
            placeholder ||= @method_name.humanize
            @options[:placeholder] = placeholder
          end
        end
      end
    end
  end
end