module CarrierWave::Uploader::Cache

Public Instance Methods

cache!(new_file) click to toggle source

Caches the given file. Calls process! to trigger any process callbacks.

Parameters

new_file (File, IOString, Tempfile)

any kind of file object

Raises

CarrierWave::FormNotMultipart

if the assigned parameter is a string

# File lib/carrierwave/uploader/cache.rb, line 86
def cache!(new_file)
  new_file = CarrierWave::SanitizedFile.new(new_file)
  raise CarrierWave::FormNotMultipart if new_file.is_path?

  unless new_file.empty?
    with_callbacks(:cache, new_file) do
      self.cache_id = CarrierWave.generate_cache_id unless cache_id

      @filename = new_file.filename
      self.original_filename = new_file.filename

      @file = new_file.copy_to(cache_path, permissions)
    end
  end
end
cache_name() click to toggle source

Returns a String which uniquely identifies the currently cached file for later retrieval

Returns

String

a cache name, in the format YYYYMMDD-HHMM-PID-RND/filename.txt

# File lib/carrierwave/uploader/cache.rb, line 71
def cache_name
  File.join(cache_id, full_original_filename) if cache_id and original_filename
end
cached?() click to toggle source

Returns true if the uploader has been cached

Returns

Bool

whether the current file is cached

# File lib/carrierwave/uploader/cache.rb, line 60
def cached?
  @cache_id
end
retrieve_from_cache!(cache_name) click to toggle source

Retrieves the file with the given #cache_name from the cache.

Parameters

#cache_name (String)

uniquely identifies a cache file

Raises

CarrierWave::InvalidParameter

if the #cache_name is incorrectly formatted.

# File lib/carrierwave/uploader/cache.rb, line 113
def retrieve_from_cache!(cache_name)
  with_callbacks(:retrieve_from_cache, cache_name) do
    self.cache_id, self.original_filename = cache_name.to_s.split('/', 2)
    @filename = original_filename
    @file = CarrierWave::SanitizedFile.new(cache_path)
  end
end