HandlebarsPrecompileFilter

[dudleyf]

We need a Handlebars precompile filter a la: http://handlebarsjs.com/precompilation.html.

[ppcano]

The following filter ( not the nicest solution ) works for my case. Based on this filter, i would recommend to provide a pre/post generate_output methods to be overridden on filter definitions.

class PrecompiledHandlebarsFilter < Rake::Pipeline::Filter
  attr_writer :counter

  def initialize(&block)
    block ||= proc { |input| input.sub(/\.handlebars$/, '.js') }
    super(&block)
    @counter = 0
  end

  def generate_output(inputs, output)

   if ( @counter == 0 ) 
    output.write "minispade.require(\"handlebars\");\n"
    output.write "minispade.require(\"ember-debug\");\n"
    output.write "minispade.require(\"ember-metal\");\n"
    output.write "minispade.require(\"ember-runtime\");\n"
    output.write "minispade.require(\"ember-views\");\n"
    output.write "minispade.require(\"ember-states\");\n"
    output.write "minispade.require(\"metamorph\");\n"
    output.write "minispade.require(\"ember-handlebars\");\n"
   end
   @counter += 1

   inputs.each do |input|
       output.write %x( handlebars #{input.fullpath} )
   end

   if ( @counter == @input_files.length )
        output.write "for( var i in Handlebars.templates ) { if ( Handlebars.templates.hasOwnProperty(i) ) { Ember.TEMPLATES[i] =  Handlebars.templates[i]; } }\n"
   end

  end
end

[sandstrom]

Maybe this can be to some use: https://github.com/tchak/rasputin