callback_scanner.rb

gistfile1.txt

CALLBACKS = [
'before_validation',
'after_validation',
'before_save',
'around_save',
'before_create',
'around_create',
'after_create',
'after_save',
'after_commit',
'after_rollback',
'before_validation',
'after_validation',
'before_save',
'around_save',
'before_update',
'around_update',
'after_update',
'after_save',
'after_commit',
'after_rollback',
'before_destroy',
'around_destroy',
'after_destroy',
]

def find_callback_counts(dir_path, extension)
  callback_counts = Hash.new(0)

  Dir.glob(File.join(dir_path, "*")).each do |file|
    if File.directory?(file)
      find_callback_counts(file, extension)
    elsif File.extname(file) == extension
      # count the number of times each callback shows up in the file
      file_content = File.read(file)
      CALLBACKS.each do |callback|
        count = file_content.scan("#{callback} :").length
        callback_counts[file] += count if count > 0
      end
    end
  end

  callback_counts.each do |callback, count|
    puts "#{callback}: #{count}"
  end
end

# example usage
find_callback_counts(".", ".rb") # searches the current directory for Ruby files with Rails callbacks, and counts the number of times each callback shows up