Module: Fortitude::Widget::Helpers::ClassMethods

Defined in:
lib/fortitude/widget/helpers.rb

Instance Method Summary collapse

Instance Method Details

#helper(*args) ⇒ Object

PUBLIC API



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# File 'lib/fortitude/widget/helpers.rb', line 18

def helper(*args)
  options = args.extract_options!
  options.assert_valid_keys(:transform, :call, :output_yielded_methods)

  args.each do |name|
    source_method_name = options[:call] || name

    prefix = "return"
    suffix = ""
    case (transform = options[:transform])
    when :output_return_value
      prefix = "text"
      suffix = "; nil"
    when :return_output
      prefix = "return capture { "
      suffix = " }"
    when :none, nil, false then nil
    else raise ArgumentError, "Invalid value for :transform: #{transform.inspect}"
    end

    block_transform = if (yielded_methods_to_output = options[:output_yielded_methods])
      "effective_block = ::Fortitude::Rails::YieldedObjectOutputter.wrap_block_as_needed(self, #{name.inspect}, block, #{yielded_methods_to_output.inspect})"
    else
      "effective_block = block"
    end

    call_part = if source_method_name.to_s =~ /\=\s*$/
      ".send(:#{source_method_name}, "
    else
      ".#{source_method_name}("
    end

    text = <<-EOS
    def #{name}(*args, &block)
      #{block_transform}
      #{prefix}(@_fortitude_rendering_context.helpers_object#{call_part}*args, &effective_block))#{suffix}
    end
EOS

    helpers_module.module_eval(text)
  end
end