diff options
Diffstat (limited to 'actionpack/lib/sprockets/helpers/rails_helper.rb')
| -rw-r--r-- | actionpack/lib/sprockets/helpers/rails_helper.rb | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/actionpack/lib/sprockets/helpers/rails_helper.rb b/actionpack/lib/sprockets/helpers/rails_helper.rb new file mode 100644 index 0000000000..ddf9b08b54 --- /dev/null +++ b/actionpack/lib/sprockets/helpers/rails_helper.rb @@ -0,0 +1,166 @@ +require "action_view" + +module Sprockets + module Helpers + module RailsHelper + extend ActiveSupport::Concern + include ActionView::Helpers::AssetTagHelper + + def asset_paths + @asset_paths ||= begin + paths = RailsHelper::AssetPaths.new(config, controller) + paths.asset_environment = asset_environment + paths.asset_digests = asset_digests + paths.compile_assets = compile_assets? + paths.digest_assets = digest_assets? + paths + end + end + + def javascript_include_tag(*sources) + options = sources.extract_options! + debug = options.key?(:debug) ? options.delete(:debug) : debug_assets? + body = options.key?(:body) ? options.delete(:body) : false + digest = options.key?(:digest) ? options.delete(:digest) : digest_assets? + + sources.collect do |source| + if debug && asset = asset_paths.asset_for(source, 'js') + asset.to_a.map { |dep| + super(dep.to_s, { :src => asset_path(dep, :ext => 'js', :body => true, :digest => digest) }.merge!(options)) + } + else + super(source.to_s, { :src => asset_path(source, :ext => 'js', :body => body, :digest => digest) }.merge!(options)) + end + end.join("\n").html_safe + end + + def stylesheet_link_tag(*sources) + options = sources.extract_options! + debug = options.key?(:debug) ? options.delete(:debug) : debug_assets? + body = options.key?(:body) ? options.delete(:body) : false + digest = options.key?(:digest) ? options.delete(:digest) : digest_assets? + + sources.collect do |source| + if debug && asset = asset_paths.asset_for(source, 'css') + asset.to_a.map { |dep| + super(dep.to_s, { :href => asset_path(dep, :ext => 'css', :body => true, :protocol => :request, :digest => digest) }.merge!(options)) + } + else + super(source.to_s, { :href => asset_path(source, :ext => 'css', :body => body, :protocol => :request, :digest => digest) }.merge!(options)) + end + end.join("\n").html_safe + end + + def asset_path(source, options = {}) + source = source.logical_path if source.respond_to?(:logical_path) + path = asset_paths.compute_public_path(source, asset_prefix, options.merge(:body => true)) + options[:body] ? "#{path}?body=1" : path + end + + def image_path(source) + asset_path(source) + end + alias_method :path_to_image, :image_path # aliased to avoid conflicts with an image_path named route + + def javascript_path(source) + asset_path(source) + end + alias_method :path_to_javascript, :javascript_path # aliased to avoid conflicts with an javascript_path named route + + def stylesheet_path(source) + asset_path(source) + end + alias_method :path_to_stylesheet, :stylesheet_path # aliased to avoid conflicts with an stylesheet_path named route + + private + def debug_assets? + compile_assets? && (Rails.application.config.assets.debug || params[:debug_assets]) + rescue NoMethodError + false + end + + # Override to specify an alternative prefix for asset path generation. + # When combined with a custom +asset_environment+, this can be used to + # implement themes that can take advantage of the asset pipeline. + # + # If you only want to change where the assets are mounted, refer to + # +config.assets.prefix+ instead. + def asset_prefix + Rails.application.config.assets.prefix + end + + def asset_digests + Rails.application.config.assets.digests + end + + def compile_assets? + Rails.application.config.assets.compile + end + + def digest_assets? + Rails.application.config.assets.digest + end + + # Override to specify an alternative asset environment for asset + # path generation. The environment should already have been mounted + # at the prefix returned by +asset_prefix+. + def asset_environment + Rails.application.assets + end + + class AssetPaths < ::ActionView::AssetPaths #:nodoc: + attr_accessor :asset_environment, :asset_prefix, :asset_digests, :compile_assets, :digest_assets + + class AssetNotPrecompiledError < StandardError; end + + # Return the filesystem path for the source + def compute_source_path(source, ext) + asset_for(source, ext) + end + + def asset_for(source, ext) + source = source.to_s + return nil if is_uri?(source) + source = rewrite_extension(source, nil, ext) + asset_environment[source] + rescue Sprockets::FileOutsidePaths + nil + end + + def digest_for(logical_path) + if digest_assets && asset_digests && (digest = asset_digests[logical_path]) + return digest + end + + if compile_assets + if digest_assets && asset = asset_environment[logical_path] + return asset.digest_path + end + return logical_path + else + raise AssetNotPrecompiledError.new("#{logical_path} isn't precompiled") + end + end + + def rewrite_asset_path(source, dir, options = {}) + if source[0] == ?/ + source + else + source = digest_for(source) unless options[:digest] == false + source = File.join(dir, source) + source = "/#{source}" unless source =~ /^\// + source + end + end + + def rewrite_extension(source, dir, ext) + if ext && File.extname(source).empty? + "#{source}.#{ext}" + else + source + end + end + end + end + end +end |