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Contents
module C80NewsTz
class CphotoUploader < CarrierWave::Uploader::Base
include CarrierWave::MiniMagick
storage :file
# При загрузке картинок генерим два thumb:
# - thumb_big (resize_to_limit),
# - thumb_small (resize_to_limit: w = page_content*1/3).
version :thumb_big do
process :resize_to_limit_big
end
version :thumb_small do
process :resize_to_limit_small
end
version :thumb_preview do
process :resize_to_fill => [229, 152]
end
def store_dir
"uploads/companies/#{format("%02d", model.company_id)}"
end
def extension_white_list
%w(jpg jpeg gif png)
end
def filename
if original_filename
"photo_#{secure_token(4)}.#{file.extension}"
end
end
protected
def secure_token(length=16)
var = :"@#{mounted_as}_secure_token"
model.instance_variable_get(var) or model.instance_variable_set(var, SecureRandom.hex(length/2))
end
def resize_to_limit_big
# puts "<PageArtUploader.resize_to_limit_big>"
manipulate! do |img|
w = SiteProp.first.page_content_width
h = calc_height_of_image(w)
img.resize "#{w}x#{h}>"
img = yield(img) if block_given?
img
end
end
def resize_to_limit_small
# puts "<PageArtUploader.resize_to_limit_small>"
manipulate! do |img|
w = SiteProp.first.page_content_width/3
h = calc_height_of_image(w)
img.resize "#{w}x#{h}>"
img = yield(img) if block_given?
img
end
end
private
def calc_height_of_image(w)
model_image = ::MiniMagick::Image.open(model.image.current_path)
calc_height(w, model_image["width"], model_image["height"])
end
# подгоняем по ширине, рассчитываем высоту
def calc_height(width, original_w, original_h)
k = width.to_f/original_w
original_h * k
end
end
end
Version data entries
12 entries across 12 versions & 1 rubygems