Class: Railpack::Manifest::Sprockets

Inherits:
Object
  • Object
show all
Defined in:
lib/railpack/manifest.rb

Overview

Sprockets manifest generator for Rails < 7. Creates a detailed manifest with digested filenames and asset mappings.

Class Method Summary collapse

Class Method Details

.generate(config) ⇒ Object 



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# File 'lib/railpack/manifest.rb', line 45

def self.generate(config)
  outdir = config['outdir']
  return unless outdir && Dir.exist?(outdir)

  manifest = {
    'files' => {},
    'assets' => {}
  }

  # Find built assets - Sprockets format
  Dir.glob("#{outdir}/**/*.{js,css}").each do |file|
    next unless File.file?(file)
    relative_path = Pathname.new(file).relative_path_from(Pathname.new(outdir)).to_s

    # Generate digest for Sprockets format
    digest = Digest::MD5.file(file).hexdigest
    logical_path = relative_path

    # Map logical names (Sprockets style) - only for application files
    if relative_path.include?('application') && relative_path.end_with?('.js')
      manifest['assets']['application.js'] = "#{digest}-#{File.basename(relative_path)}"
      logical_path = 'application.js'
    elsif relative_path.include?('application') && relative_path.end_with?('.css')
      manifest['assets']['application.css'] = "#{digest}-#{File.basename(relative_path)}"
      logical_path = 'application.css'
    else
      # For non-application files, still add to files but not to assets mapping
      logical_path = relative_path
    end

    # Add file entry for all files
    manifest['files']["#{digest}-#{File.basename(relative_path)}"] = {
      'logical_path' => logical_path,
      'pathname' => relative_path,
      'digest' => digest,
      'size' => File.size(file),
      'mtime' => File.mtime(file).iso8601
    }
  end

  # Write manifest for Sprockets (Rails < 7)
  manifest_path = "#{outdir}/.sprockets-manifest-#{Digest::MD5.hexdigest(outdir)}.json"
  File.write(manifest_path, JSON.pretty_generate(manifest))
  Railpack.logger.debug "📄 Generated Sprockets manifest: #{manifest_path}"
end