Module: CarrierWave::Uploader::Store

Extended by:
ActiveSupport::Concern
Includes:
Cache, Callbacks, Configuration
Included in:
Base
Defined in:
lib/carrierwave/uploader/store.rb

Instance Method Summary collapse

Methods included from Cache

#cache!, #cache_name, #cache_path, #cache_stored_file!, #cached?, #retrieve_from_cache!, #sanitized_file

Methods included from Callbacks

#with_callbacks

Instance Method Details

#deduplicate(current_identifiers) ⇒ Object

Look for an identifier which doesn’t collide with the given already-stored identifiers. It is done by adding a index number as the suffix. For example, if there’s ‘image.jpg’ and the @deduplication_index is set to 2, The stored file will be named as ‘image(2).jpg’.

Parameters

current_identifiers (Array)

List of identifiers for already-stored files



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# File 'lib/carrierwave/uploader/store.rb', line 120

def deduplicate(current_identifiers)
  @deduplication_index = nil
  return unless current_identifiers.include?(identifier)

  (1..current_identifiers.size + 1).each do |i|
    @deduplication_index = i
    break unless current_identifiers.include?(identifier)
  end
end

#deduplicated_filename ⇒ Object

Returns a filename which doesn’t conflict with already-stored files.

Returns

String

the filename with suffix added for deduplication



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# File 'lib/carrierwave/uploader/store.rb', line 44

def deduplicated_filename
  return unless filename
  return filename unless @deduplication_index

  parts = filename.split('.')
  basename = parts.shift
  basename.sub!(/ ?\(\d+\)\z/, '')
  ([basename.to_s + (@deduplication_index > 1 ? "(#{@deduplication_index})" : '')] + parts).join('.')
end

#filename ⇒ Object

Override this in your Uploader to change the filename.

Be careful using record ids as filenames. If the filename is stored in the database the record id will be nil when the filename is set. Don’t use record ids unless you understand this limitation.

Do not use the version_name in the filename, as it will prevent versions from being loaded correctly.

Returns

String

a filename



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# File 'lib/carrierwave/uploader/store.rb', line 33

def filename
  @filename
end

#retrieve_from_store!(identifier) ⇒ Object

Retrieves the file from the storage.

Parameters

identifier (String)

uniquely identifies the file to retrieve



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# File 'lib/carrierwave/uploader/store.rb', line 103

def retrieve_from_store!(identifier)
  with_callbacks(:retrieve_from_store, identifier) do
    @file = storage.retrieve!(identifier)
    @identifier = identifier
  end
end

#store!(new_file = nil) ⇒ Object

Stores the file by passing it to this Uploader’s storage engine.

If new_file is omitted, a previously cached file will be stored.

Parameters

new_file (File, IOString, Tempfile)

any kind of file object



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# File 'lib/carrierwave/uploader/store.rb', line 79

def store!(new_file=nil)
  cache!(new_file) if new_file && !cached?
  if !cache_only && @file && @cache_id
    with_callbacks(:store, new_file) do
      new_file = storage.store!(@file)
      if delete_tmp_file_after_storage
        @file.delete unless move_to_store
        cache_storage.delete_dir!(cache_path(nil))
      end
      @file = new_file
      @identifier = storage.identifier
      @original_filename = @cache_id = @deduplication_index = nil
      @staged = false
    end
  end
end

#store_path(for_file = identifier) ⇒ Object

Calculates the path where the file should be stored. If for_file is given, it will be used as the identifier, otherwise CarrierWave::Uploader#identifier is assumed.

Parameters

for_file (String)

name of the file <optional>

Returns

String

the store path



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# File 'lib/carrierwave/uploader/store.rb', line 66

def store_path(for_file=identifier)
  File.join([store_dir, full_filename(for_file)].compact)
end