adbanner-test/app/uploaders/banner_image_uploader.rb

91 lines
2.4 KiB
Ruby

# encoding: utf-8
require 'carrierwave/processing/mime_types'
class BannerImageUploader < CarrierWave::Uploader::Base
# Include RMagick or MiniMagick support:
# include CarrierWave::RMagick
# include CarrierWave::MiniMagick
include CarrierWave::MiniMagick
include CarrierWave::MimeTypes
# Choose what kind of storage to use for this uploader:
storage :file
# storage :fog
# 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/banner_image/#{mounted_as}/#{model.id}"
end
# override
def filename
@original_filename
end
# override
def original_filename=(filename)
@original_filename = super(filename)
if(@original_filename.bytesize > 200)
original_file_extension = File.extname(@original_filename)
@original_filename.force_encoding("ascii-8bit")
@original_filename = @original_filename[0, (200 - original_file_extension.bytesize)]
@original_filename.encode!("UTF-16BE", "UTF-8", :invalid => :replace, :undef => :replace, :replace => '')
@original_filename.encode!("UTF-8")
@original_filename += original_file_extension
end
@original_filename
end
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
# # For Rails 3.1+ asset pipeline compatibility:
# # ActionController::Base.helpers.asset_path("fallback/" + [version_name, "default.png"].compact.join('_'))
#
# "/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 :fix_exif_rotation
process :resize_to_fit => [400, 400]
end
version :mobile do
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 bmp)
end
# Override the filename of the uploaded files:
# Avoid using model.id or version_name here, see uploader/store.rb for details.
# def filename
# "something.jpg" if original_filename
# end
end