diff options
Diffstat (limited to 'actionpack/lib/action_view/helpers/asset_tag_helpers/asset_paths.rb')
-rw-r--r-- | actionpack/lib/action_view/helpers/asset_tag_helpers/asset_paths.rb | 49 |
1 files changed, 46 insertions, 3 deletions
diff --git a/actionpack/lib/action_view/helpers/asset_tag_helpers/asset_paths.rb b/actionpack/lib/action_view/helpers/asset_tag_helpers/asset_paths.rb index 5f884e391a..7a00c8e69d 100644 --- a/actionpack/lib/action_view/helpers/asset_tag_helpers/asset_paths.rb +++ b/actionpack/lib/action_view/helpers/asset_tag_helpers/asset_paths.rb @@ -1,12 +1,17 @@ require 'active_support/core_ext/file' -require 'action_view/helpers/asset_tag_helpers/asset_id_caching' module ActionView module Helpers module AssetTagHelper class AssetPaths - include AssetIdCaching + # You can enable or disable the asset tag timestamps cache. + # With the cache enabled, the asset tag helper methods will make fewer + # expensive file system calls. However this prevents you from modifying + # any asset files while the server is running. + # + # ActionView::Helpers::AssetTagHelper.cache_asset_timestamps = false + mattr_accessor :cache_asset_timestamps attr_reader :config, :controller @@ -36,6 +41,12 @@ module ActionView source end + def add_to_asset_timestamp_cache(source, asset_id) + self.asset_timestamps_cache_guard.synchronize do + self.asset_timestamps_cache[source] = asset_id + end + end + def is_uri?(path) path =~ %r{^[-a-z]+://|^cid:} end @@ -62,8 +73,40 @@ module ActionView return path.call(source) elsif path && path.is_a?(String) return path % [source] + end + + asset_id = rails_asset_id(source) + if asset_id.empty? + source + else + "#{source}?#{asset_id}" + end + end + + mattr_accessor :asset_timestamps_cache + self.asset_timestamps_cache = {} + + mattr_accessor :asset_timestamps_cache_guard + self.asset_timestamps_cache_guard = Mutex.new + + # Use the RAILS_ASSET_ID environment variable or the source's + # modification time as its cache-busting asset id. + def rails_asset_id(source) + if asset_id = ENV["RAILS_ASSET_ID"] + asset_id else - handle_asset_id(source) + if self.cache_asset_timestamps && (asset_id = self.asset_timestamps_cache[source]) + asset_id + else + path = File.join(config.assets_dir, source) + asset_id = File.exist?(path) ? File.mtime(path).to_i.to_s : '' + + if self.cache_asset_timestamps + add_to_asset_timestamp_cache(source, asset_id) + end + + asset_id + end end end |