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Rails -- How to save HTML output of a HAML partial as a string to send to an external service?

Answer 1

+1 A:

A common way to do this (which is typically advised against) is to render into a string in your model or rake task:


cached_content = 
  ActionView::Base.new(Rails::Configuration.new.view_path).render(:partial => "newsletter", :locals => {:page => self,:collection => posts})

see here for a more full description: http://www.compulsivoco.com/2008/10/rendering-rails-partials-in-a-model-or-background-task/

If you are using page or fragment caching, you could pull the content out of the cache. The easiest way to do this is to just enable caching, and then look at where the files are being placed.

http://guides.rubyonrails.org/caching_with_rails.html

klochner 2009-08-11 16:50:50

thanks a lot, that's exactly what I was looking for but now that you mention it, caching the newsletter would make a lot more sense for my application

Neil Sarkar 2009-08-11 17:24:25

Answer 2

A:

A bit of a shot in the dark but if you check out the rdoc for Haml it more than likely has a method which accepts a string and some variables and then renders the output.

With ERB it would look something like:

require 'erb'

name = 'world'
template = 'hello <%= name %>'
template = ERB.new(template)
puts template.result(binding)

Kris 2009-08-11 16:55:32

Answer 3

+1 A:

A more direct approach from the HAML docs:

require 'haml'
haml_string = "%p Haml-tastic!"
engine = Haml::Engine.new(haml_string)
engine.render #=> "<p>Haml-tastic!</p>\n"

You'll have to do a bit of work loading up the HAML template and setting up any local variables that need interpolation, but the flexibility may make up for that.

Nick Zadrozny 2009-08-11 22:45:46

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Rails -- How to save HTML output of a HAML partial as a string to send to an external service?

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