method

block_called_from_erb?

Ruby on Rails latest stable (v6.1.7.7) - 1 note - Class: ActionView::Helpers::TagHelper

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What's this?

Method deprecated or moved

This method is deprecated or moved on the latest stable version. The last existing version (v2.3.8) is shown here.

block_called_from_erb?(block) private

No documentation

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Show source

# File actionpack/lib/action_view/helpers/tag_helper.rb, line 122
          def block_called_from_erb?(block)
            block && eval(BLOCK_CALLED_FROM_ERB, block.binding)
          end

March 25, 2009 - (>= v2.2.1)

1 thank

usage helper with block

helper example

def my_helper(&block)
  inner = capture(&block)
  out = "<somehtml>#{inner}</somehtml>"
  block_called_from_erb?(block) ? concat(out) : out
end

view example

<% my_helper do %>
  sometext
<% end %>

output

<somehtml>sometext</somehtml>

using ActionView::Helpers::CaptureHelper#capture