Module: Attacheable::ClassMethods

Defined in:
lib/attacheable.rb

Instance Method Summary collapse

Instance Method Details

#autosave_to_development(production_host) ⇒ Object

If you regularly dump Your database from production to development, You will get problems with downloading assets. It is a real problem to download 8Gb of unused pictures. Download only those photos, which you need.

autosave_to_development("prophotos.ru") if RAILS_ENV == "development"

Warning!! It will very slow.



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# File 'lib/attacheable.rb', line 101

def autosave_to_development(production_host)
  attachment_options[:production_host] = production_host
  alias_method_chain :public_filename, :download
end

#data_by_path_info(path_info) ⇒ Object

It is designed to read params, or splitted PATH_INFO in mongrel handler It assumes, that path_info is of the following format [“0000”, “0001”, “file_medium.jpg”]



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# File 'lib/attacheable.rb', line 119

def data_by_path_info(path_info)
  id1, id2, path = path_info
  return [nil, nil] unless id1 && id2 && path
  object = find(id1.to_i*1000 + id2.to_i)
  if path = object.full_filename_by_path(path)
    return [object, File.read(path)] if File.exists?(path)
  end
  [object, nil]
end

#image_height(filename) ⇒ Object 



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# File 'lib/attacheable.rb', line 133

def image_height(filename)
  `identify -format "%h" "#{filename}"`.to_i
end

#image_width(filename) ⇒ Object 



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# File 'lib/attacheable.rb', line 129

def image_width(filename)
  `identify -format "%w" "#{filename}"`.to_i
end

#regenerate_thumbnails!(thumbnail = nil) ⇒ Object

You can delete all thumbnails or with selected type



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# File 'lib/attacheable.rb', line 109

def regenerate_thumbnails!(thumbnail = nil)
  connection.select_values(send(:construct_finder_sql, :select => "id")).each do |object_id|
    object = find_by_id(object_id)
    object.destroy_thumbnails!(thumbnail)
  end
end