module Sprockets::ManifestUtils

Returns String filename.

# => "/app/public/assets/.sprockets-manifest-abc123.json"
find_directory_manifest("/app/public/assets")

Examples

dirname - String dirname

Public: Find or pick a new manifest filename for target build directory.

def find_directory_manifest(dirname)
  entries = File.directory?(dirname) ? Dir.entries(dirname) : []
  entry = entries.find { |e| e =~ MANIFEST_RE } ||
    # Deprecated: Will be removed in 4.x
    entries.find { |e| e =~ LEGACY_MANIFEST_RE } ||
    generate_manifest_path
  File.join(dirname, entry)
end

Return String path.

all bets are off.
guessing the location. If directory indexes are enabled on the server,
a random hex string is appended to the filename to prevent people from
like Apache. To help in other environments that may not control this,
filename is prefixed with a "." which is usually hidden by web servers
alongside public assets for convenience. To avoid being served, the
Manifests are not intended to be accessed publicly, but typically live

Public: Generate a new random manifest path.

def generate_manifest_path
  ".sprockets-manifest-#{SecureRandom.hex(16)}.json"
end