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Contents
# encoding: utf-8
module CarrierWave
module Uploader
module Processing
depends_on CarrierWave::Uploader::Callbacks
setup do
after :cache, :process!
end
module ClassMethods
##
# Lists processor callbacks declared
#
# === Returns
#
# [Array[Array[Symbol, Array]]] a list of processor callbacks which have been declared for this uploader
#
def processors
@processors ||= []
end
##
# Adds a processor callback which applies operations as a file is uploaded.
# The argument may be the name of any method of the uploader, expressed as a symbol,
# or a list of such methods, or a hash where the key is a method and the value is
# an array of arguments to call the method with
#
# === Parameters
#
# args (*Symbol, Hash{Symbol => Array[]})
#
# === Examples
#
# class MyUploader < CarrierWave::Uploader::Base
#
# process :sepiatone, :vignette
# process :scale => [200, 200]
#
# def sepiatone
# ...
# end
#
# def vignette
# ...
# end
#
# def scale(height, width)
# ...
# end
# end
#
def process(*args)
args.each do |arg|
if arg.is_a?(Hash)
arg.each do |method, args|
processors.push([method, args])
end
else
processors.push([arg, []])
end
end
end
end # ClassMethods
##
# Apply all process callbacks added through CarrierWave.process
#
def process!(new_file=nil)
self.class.processors.each do |method, args|
self.send(method, *args)
end
end
end # Processing
end # Uploader
end # CarrierWave
Version data entries
13 entries across 13 versions & 4 rubygems