Sha256: f21ba5f23a6b79ffb5955ff09d3cdf1473c1dfdd2625286eb41e8051a4b47067
Contents?: true
Size: 1.1 KB
Versions: 16
Compression:
Stored size: 1.1 KB
Contents
module Sinatra
module AssetPack
module BusterHelpers
extend self
# Returns the cache buster suffix for given file(s).
# This implementation somewhat obfuscates the mtime to not reveal deployment dates.
def cache_buster_hash(*files)
i = mtime_for(files)
(i * 4567).to_s.reverse[0...6] if i
end
# Returns the maximum mtime for a given list of files.
# It will return nil if none of them are found.
def mtime_for(files)
files.map { |f| File.mtime(f).to_i if f.is_a?(String) && File.file?(f) }.compact.max
end
# Adds a cache buster for the given path.
#
# The 2nd parameter (and beyond) are the files to take mtime from.
# If the files are not found, the paths will be left as they are.
#
# add_cache_buster('/images/email.png', '/var/www/x/public/images/email.png')
#
def add_cache_buster(path, *files)
hash = cache_buster_hash *files
if hash
path.gsub(/(\.[^.]+)$/) { |ext| ".#{hash}#{ext}" }
else
path
end
end
end
end
end
Version data entries
16 entries across 16 versions & 3 rubygems