Module: RequirejsHelper

Defined in:
app/helpers/requirejs_helper.rb

Constant Summary collapse

@@_priority = 
[]

Instance Method Summary collapse

Instance Method Details

#javascript_path(name) ⇒ Object 



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# File 'app/helpers/requirejs_helper.rb', line 78

def javascript_path(name)
  if defined?(super)
    super
  else
    "/assets/#{name}"
  end
end

#requirejs_include_tag(name = nil, &block) ⇒ Object 



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# File 'app/helpers/requirejs_helper.rb', line 10

def requirejs_include_tag(name=nil, &block)
  requirejs = Rails.application.config.requirejs

  if requirejs.loader == :almond
    name = requirejs.module_name_for(requirejs.build_config['modules'][0])
    return almond_include_tag(name, &block)
  end

  html = ""

  once_guard do
    rjs_attributes = {
        src: javascript_path("require")
    }

    rjs_attributes = rjs_attributes.merge(Hash[block.call(controller).map do |key, value|
      ["data-#{key}", value]
    end]) \
      if block

    html.concat(content_tag(:script, "", rjs_attributes))

    unless requirejs.run_config.empty?
      run_config = requirejs.run_config.dup

      unless _priority.empty?
        run_config = run_config.dup
        run_config[:priority] ||= []
        run_config[:priority].concat _priority
      end

      if Rails.application.config.assets.digest
        modules = requirejs.build_config['modules'].map { |m| requirejs.module_name_for m }

        # Generate digestified paths from the modules spec
        paths = {}
        modules.each { |m| paths[m] = javascript_path(m).sub /\.js$/, '' }

        if run_config.has_key? 'paths'
          # Add paths for assets specified by full URL (on a CDN)
          run_config['paths'].each do |k, v|
            paths[k] = v if v.is_a?(Array) || v =~ /^https?:/
          end
        end

        # Override user paths, whose mappings are only relevant in dev mode
        # and in the build_config.
        run_config['paths'] = paths
      end

      run_config['baseUrl'] = base_url(name)

      html.concat(content_tag(:script) do
        script = "require.config(#{run_config.to_json});"

        # Pass an array to `require`, since it's a top-level module about to be loaded asynchronously (see
        # `http://requirejs.org/docs/errors.html#notloaded`).
        script.concat(" require([#{name.dump}]);") \
          if name

        script.html_safe
      end)
    end

    html.html_safe
  end
end