module ActionView::Helpers::CaptureHelper

<%= @greeting %>




You can then use that variable anywhere else. For example:

end
"The current timestamp is #{Time.now}."
@timestamp = capture do

...and Builder (RXML) templates.

<% end %>
<%= Time.now %>
Welcome to my shiny new web page! The date and time is
<% @greeting = capture do %>

The capture method can be used in ERB templates...

variable. You can then use this variable anywhere in your templates or layout.
The capture method allows you to extract part of a template into a

def capture(*args)
  value = nil
  buffer = with_output_buffer { value = yield(*args) }
  if string = buffer.presence || value and string.is_a?(String)
    ERB::Util.html_escape string
  end
end