class AssetHelper

Constants

REDIS_PREFIX

Public Class Methods

base64_encoded(path, cache: false) click to toggle source
# File lib/asset_helper.rb, line 7
def base64_encoded(path, cache: false)
  key = "#{REDIS_PREFIX}#{path}"

  if cache
    b64_asset = redis.get(key)
    return b64_asset if b64_asset.present?
  end

  b64_asset = encode path
  redis.set key, b64_asset, ex: 1.day.to_i if cache
  b64_asset
end
inlined(path) click to toggle source
# File lib/asset_helper.rb, line 20
def inlined(path)
  if Rails.env.development? || Rails.env.test?
    asset = Rails.application.assets.find_asset(path)
  else
    filesystem_path = Rails.application.assets_manifest.assets[path]
    asset = File.read(Rails.root.join('public', 'assets', filesystem_path))
  end
  asset
end

Private Class Methods

encode(path) click to toggle source
# File lib/asset_helper.rb, line 32
def encode(path)
  if Rails.env.development? || Rails.env.test?
    asset = Rails.application.assets.find_asset(path)
    content_type = asset&.content_type
  elsif (filesystem_path = Rails.application.assets_manifest.assets[path])
    asset = File.read(Rails.root.join('public', 'assets', filesystem_path))
    content_type = Mime::Type.lookup_by_extension(File.extname(path).split('.').last)
  end
  raise "Could not find asset '#{path}'" if asset.nil?
  raise "Unknown MimeType for asset '#{path}'" if content_type.nil?

  encoded = Base64.encode64(asset.to_s).gsub(/\s+/, '')
  "data:#{content_type};base64,#{Rack::Utils.escape(encoded)}"
end
redis() click to toggle source
# File lib/asset_helper.rb, line 47
def redis
  Rails.application.config.redis
end