Contents

#encoding: utf-8
require 'carrierwave/processing/mime_types'
require 'shellwords'

# TODO Добавить настройку watermark_image, position

class GenericImageUploader < CarrierWave::Uploader::Base
  include CarrierWave::RMagick
  include CarrierWave::MimeTypes

  before :cache, :capture_size_before_cache

  storage :file

  process :set_content_type
  process :set_image_properties

  def watermark
    return if !model || !model.respond_to?(getter(:watermarked?)) || !model.send(getter(:watermarked?))

    manipulate! do |img|
      logo = Magick::Image.read(Rails.root.join("app/assets/images/watermark.png")).first
      img.composite(logo, Magick::SouthEastGravity, 0, 0, Magick::OverCompositeOp)
    end
  end

  def store_dir
    "uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}"
  end

  #def default_url
  #  "/assets/fallback/" + [version_name, "default.png"].compact.join('_')
  #end

  def capture_size_before_cache(new_file)
    return unless model
    return unless new_file.path
    if model.respond_to?(setter(:width)) && model.respond_to?(setter(:height))
      w, h = `identify -format "%wx %h" #{new_file.path.shellescape}`.split(/x/).map { |dim| dim.to_i }
      model.send(setter(:width), w)
      model.send(setter(:height), h)
    end
  end

  def set_image_properties
    return if !model || !file

    model.send(setter(:file_name), file.filename) if model.respond_to?(setter(:file_name))
    model.send(setter(:size), file.size) if model.respond_to?(setter(:size))
    model.send(setter(:content_type), file.content_type) if model.respond_to?(setter(:content_type))
    capture_size_before_cache(file)
  end

  private

  def setter(name)
    opt = model.class.uploader_options[mounted_as] || {}
    if opt[:prefixed]
      "#{mounted_as}_#{name}="
    else
      "#{name}="
    end
  end


  def getter(name)
    opt = model.class.uploader_options[mounted_as] || {}
    if opt[:prefixed]
      "#{mounted_as}_#{name}"
    else
      "#{name}"
    end
  end

end

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
coalla-cms-0.5.2.4	app/uploaders/generic_image_uploader.rb