Erb Block Helper for Webby

A lot of times it’s very convinient to use ruby blocks in Webby pages. For example this HTML:

<div class="container clearfix">
  <div class="left">Title</div>
  <div class="right">
    <p>Some random content</p>
  </div>
</div>

…can be created using simple ruby helper what takes block and title parameter like this:

<% container("Title") do %>
  <p>Some random content</p>
<% end %>

To implement it we need to capure_erb and concat_erb. Not a good idea to use those methods in every erb helper, so I made with_content_of method what wraps those creepy things:

def with_content_of(content_block, &block)
  content = capture_erb(&content_block)
  concat_erb(yield(content), content_block.binding)
end

Now composite can be implemented as following:

# takes a block with some random text/html content from erb
def composite(title, &block)
  # call helper, give 'em that block and get back the content ()
  with_content_of block do |content|
    # use the content from erb block and do with it whatever you like
    render :partial => "composite", :locals => { :left => title, :right => content }
  end
end

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