gallery/app/uploaders/gallery_uploader.rb

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# encoding: utf-8
module CarrierWave
module Uploader
module Versions
def recreate_version!(version)
already_cached = cached?
cache_stored_file! if !already_cached
send(version).store!
if !already_cached && @cache_id
tmp_dir = File.expand_path(File.join(cache_dir, cache_id), CarrierWave.root)
FileUtils.rm_rf(tmp_dir)
end
end
end
end
end
class GalleryUploader < CarrierWave::Uploader::Base
# Include RMagick or ImageScience support:
# include CarrierWave::RMagick
# include CarrierWave::ImageScience
include CarrierWave::MiniMagick
# Choose what kind of storage to use for this uploader:
# storage :file
# storage :s3
# Override the directory where uploaded files will be stored.
# This is a sensible default for uploaders that are meant to be mounted:
def store_dir
"uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}"
end
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def fix_exif_rotation
manipulate! do |img|
img.tap(&:auto_orient)
end
end
# Provide a default URL as a default if there hasn't been a file uploaded:
# def default_url
# "/images/fallback/" + [version_name, "default.png"].compact.join('_')
# end
# Process files as they are uploaded:
# process :scale => [200, 300]
#
# def scale(width, height)
# # do something
# end
# Create different versions of your uploaded files:
# version :thumb do
# process :scale => [50, 50]
# end
version :thumb do
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process :fix_exif_rotation
process :resize_to_fill => [200, 200]
end
version :theater do
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process :fix_exif_rotation
process :resize_to_limit => [1920, 1080]
end
version :mobile do
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process :fix_exif_rotation
process :resize_to_limit => [1152, 768]
end
# Add a white list of extensions which are allowed to be uploaded.
# For images you might use something like this:
# def extension_white_list
# %w(jpg jpeg gif png)
# end
# Override the filename of the uploaded files:
# def filename
# "something.jpg" if original_filename
# end
# def manipulate!
# raise current_path.inspect
# image = ::MiniMagick::Image.open(current_path)
# image = yield(image)
# image.write(current_path)
# ::MiniMagick::Image.open(current_path)
# rescue ::MiniMagick::Error, ::MiniMagick::Invalid => e
# raise CarrierWave::ProcessingError.new("Failed to manipulate with MiniMagick, maybe it is not an image? Original Error: #{e}")
# end
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end