Class: AbAdmin::CarrierWave::BaseUploader

Inherits:
CarrierWave::Uploader::Base
  • Object
show all
Includes:
Utils::EvalHelpers, CarrierWave::MimeTypes, CarrierWave::MiniMagick
Defined in:
lib/ab_admin/carrierwave/base_uploader.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Utils::EvalHelpers

#call_method_or_proc_on, #evaluate_method

Instance Attribute Details

#internal_identifier ⇒ Object

Returns the value of attribute internal_identifier.



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# File 'lib/ab_admin/carrierwave/base_uploader.rb', line 17

def internal_identifier
  @internal_identifier
end

Instance Method Details

#cropper(*geometry) ⇒ Object

Crop image by specific coordinates www.imagemagick.org/script/command-line-processing.php?ImageMagick=6ddk6c680muj4eu2vr54vdveb7#geometry process cropper: [size, offset] process cropper: [800, 600, 10, 20]



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# File 'lib/ab_admin/carrierwave/base_uploader.rb', line 156

def cropper(*geometry)
  geometry = normalize_param(geometry[0]) if geometry.size == 1

  if geometry && geometry.size == 4
    manipulate! do |img|
      img.crop '%ix%i+%i+%i' % geometry
      img = yield(img) if block_given?
      img
    end
  end
end

#default_url ⇒ Object 



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# File 'lib/ab_admin/carrierwave/base_uploader.rb', line 176

def default_url
  image_name = [model.class.to_s.underscore, version_name].compact.join('_')
  "/assets/defaults/#{image_name}.png"
end

#dimensions ⇒ Object 



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# File 'lib/ab_admin/carrierwave/base_uploader.rb', line 185

def dimensions
  [magick[:width], magick[:height]]
end

#filename ⇒ Object 



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# File 'lib/ab_admin/carrierwave/base_uploader.rb', line 62

def filename
  internal_identifier || model.send("#{mounted_as}_file_name") || (store_filename && "#{secure_token}#{File.extname(store_filename)}")
end

#full_filename(for_file = filename) ⇒ Object 



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# File 'lib/ab_admin/carrierwave/base_uploader.rb', line 37

def full_filename(for_file=filename)
  ext = File.extname(for_file)
  human_filename_part = for_file.chomp(ext)
  tech_filename_part = "#{version_name || secure_token}#{ext}"
  human_filename_part == secure_token ? tech_filename_part : "#{human_filename_part}_#{tech_filename_part}"
end

#full_original_filename ⇒ Object 



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# File 'lib/ab_admin/carrierwave/base_uploader.rb', line 44

def full_original_filename
  "#{version_name || secure_token}#{File.extname(store_filename)}"
end

#image?(new_file = nil) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ab_admin/carrierwave/base_uploader.rb', line 181

def image?(new_file = nil)
  (file || new_file).content_type.include? 'image'
end

#magick ⇒ Object 



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# File 'lib/ab_admin/carrierwave/base_uploader.rb', line 189

def magick
  #@magick ||= ::MiniMagick::Image.new(current_path)
  ::MiniMagick::Image.new(current_path)
end

#normalize_filename(raw_filename) ⇒ Object 



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# File 'lib/ab_admin/carrierwave/base_uploader.rb', line 79

def normalize_filename(raw_filename)
  I18n.transliterate(raw_filename).parameterize('_').gsub(/[\-_]+/, '_').downcase
end

#quality(percentage) ⇒ Object

Reduces the quality of the image to the percentage given process quality: 85



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# File 'lib/ab_admin/carrierwave/base_uploader.rb', line 124

def quality(percentage)
  percentage = normalize_param(percentage)

  unless percentage.blank?
    manipulate! do |img|
      img.quality(percentage.to_s)
      img = yield(img) if block_given?
      img
    end
  end
end

#rename_via_move(new_file_name) ⇒ Object

rename files via move



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# File 'lib/ab_admin/carrierwave/base_uploader.rb', line 84

def rename_via_move(new_file_name)
  dir = File.dirname(path)

  moves = []
  versions.values.unshift(self).each do |v|
    from_path = File.join(dir, v.full_filename)
    to_path = File.join(dir, v.full_filename(new_file_name))
    return false if from_path == to_path || !File.exists?(from_path)
    moves << [from_path, to_path]
  end
  moves.each { |move| FileUtils.mv(*move) }

  write_internal_identifier new_file_name
  model.send("write_#{mounted_as}_identifier")
  retrieve_from_store!(new_file_name)
  new_file_name
end

#rotate(degrees = nil) ⇒ Object

Rotate image by degress process rotate: “-90”



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# File 'lib/ab_admin/carrierwave/base_uploader.rb', line 139

def rotate(degrees = nil)
  degrees = normalize_param(degrees)

  unless degrees.blank?
    manipulate! do |img|
      img.rotate(degrees.to_s)
      img = yield(img) if block_given?
      img
    end
  end
end

#save_original_name(file) ⇒ Object 



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# File 'lib/ab_admin/carrierwave/base_uploader.rb', line 33

def save_original_name(file)
  model.original_name ||= file.original_filename if file.respond_to?(:original_filename)
end

#secure_token ⇒ Object

use secure token in the filename for non processed image



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# File 'lib/ab_admin/carrierwave/base_uploader.rb', line 49

def secure_token
  model.data_secure_token ||= AbAdmin.friendly_token(20).downcase
end

#store_dir ⇒ Object

prevent large number of subdirectories



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# File 'lib/ab_admin/carrierwave/base_uploader.rb', line 105

def store_dir
  str_id = model.id.to_s.rjust(4, '0')
  [AbAdmin.uploads_dir, model.class.to_s.underscore, str_id[0..2], str_id[3..-1]].join('/')
end

#store_model_filename(record) ⇒ Object 



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# File 'lib/ab_admin/carrierwave/base_uploader.rb', line 53

def store_model_filename(record)
  old_file_name = filename
  new_file_name = model_filename(old_file_name, record)
  return if new_file_name.blank? || new_file_name == old_file_name
  rename_via_move(new_file_name)
end

#strip ⇒ Object

Strips out all embedded information from the image process :strip



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# File 'lib/ab_admin/carrierwave/base_uploader.rb', line 113

def strip
  manipulate! do |img|
    img.strip
    img = yield(img) if block_given?
    img
  end
end

#watermark(watermark_path, gravity = 'SouthEast') ⇒ Object 



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# File 'lib/ab_admin/carrierwave/base_uploader.rb', line 168

def watermark(watermark_path, gravity='SouthEast')
  manipulate! do |img|
    resolved_path = watermark_path.is_a?(Symbol) ? send(watermark_path) : watermark_path
    watermark_image = ::MiniMagick::Image.open(resolved_path)
    img.composite(watermark_image) { |c| c.gravity gravity }
  end
end