在视图帮助器中给定的块后呈现内容

Question

I have a view helper method that takes a block. Render that block is no problem, but when I try to add content after the block is rendered, it does not work.

  def validation_div(&block)
    content_tag :div do
      yield
      content_tag :div do
        'This content is never rendered!'
      end
    end
  end

The above code just yields the block and skips the other content. I have also tried with: content_for , capture , concat and with_output_buffer without any success. As you notice, I don't really understand how these methods work... But my question is: how to render something after the given block is rendered. Thanks!

Answer 1

If you look at a content_tag definition, you see it only outputs one tag, one class, and one content. You're trying to get it out out multiple contents so you'll need to join them.

def validation_div(&block)
  content = capture(&block)
  content_tag :div do
    content + content_tag(:div , "This content is never rendered!")
  end
end