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module Lipsiadmin
module Attachment
# Attachment processors allow you to modify attached files when they are
# attached in any way you are able. Attachment itself uses command-line
# programs for its included Thumbnail processor, but custom processors
# are not required to follow suit.
#
# Processors are required to be defined inside the Attachment module and
# are also required to be a subclass of Attachment::Processor. There are
# only two methods you must implement to properly be a subclass:
# #initialize and #make. Initialize's arguments are the file that will
# be operated on (which is an instance of File), and a hash of options
# that were defined in has_attached_file's style hash.
#
# All #make needs to do is return an instance of File (Tempfile is
# acceptable) which contains the results of the processing.
#
# See Attachment.run for more information about using command-line
# utilities from within Processors.
class Processor
attr_accessor :file, :options
def initialize(file, options = {})
@file = file
@options = options
end
def make
end
def self.make(file, options = {})
new(file, options).make
end
end
# Due to how ImageMagick handles its image format conversion and how Tempfile
# handles its naming scheme, it is necessary to override how Tempfile makes
# its names so as to allow for file extensions. Idea taken from the comments
# on this blog post:
# http://marsorange.com/archives/of-mogrify-ruby-tempfile-dynamic-class-definitions
class Tempfile < ::Tempfile
# Replaces Tempfile's +make_tmpname+ with one that honors file extensions.
def make_tmpname(basename, n)
extension = File.extname(basename)
sprintf("%s,%d,%d%s", File.basename(basename, extension), $$, n, extension)
end
end
end
end
Version data entries
39 entries across 39 versions & 1 rubygems