Created
July 28, 2010 23:24
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If you're using Sinatra with ERB and you want to write helpers that take blocks, you need a little bit of magic that other more complex frameworks provide for you (capture). Here's a really really simple example.
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| require 'rubygems' | |
| require 'sinatra' | |
| require 'erb' | |
| helpers do | |
| def buffer() | |
| @_out_buf | |
| end | |
| def capture(buffer) | |
| pos = buffer.size | |
| yield | |
| buffer.slice!(pos..buffer.size) | |
| end | |
| def my_helper(&block) | |
| buffer << erb(capture(buffer, &block), :layout => :my_layout) | |
| end | |
| end | |
| template :index do | |
| <<-eos | |
| <!DOCTYPE html> | |
| <html> | |
| <head><title>Block Helper Test</title></head> | |
| <body> | |
| <% my_helper do %> | |
| <p>This is the content in the block.</p> | |
| <% end %> | |
| </body> | |
| </html> | |
| eos | |
| end | |
| template :my_layout do | |
| <<-eos | |
| <div class="my-container"> | |
| <p>This should be above the content in the block.</p> | |
| <%= yield %> | |
| <p>This should be below the content in the block.</p> | |
| </div> | |
| eos | |
| end | |
| get "/" do | |
| erb :index | |
| end |
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Thanks for this. It was super helpful!