carrierwave_present.rb

# how to use: ruby carrierwave_present.rb | sort
# requires: git, sed, ruby

def do_grep(attribute)
  _puts = ->(s) { puts s unless s.empty? }

  _puts.call `git grep '#{attribute}\.present?'`
  _puts.call `git grep '#{attribute}\.blank?'`
  _puts.call `git grep '#{attribute}?'`
end

carrierwave_attributes = `git grep mount_uploader | sed -e 's/^.* mount_uploader ://' -e 's/, .*$//'`.lines.map(&:strip)
carrierwave_attributes.uniq.each do |attribute|
  do_grep(attribute)
end