A method for sizing an upload. Response to https://gist.github.com/959582

size_upload.rb

SIZING_METHODS = {:enable_images? => :resize, :enable_videos? => :encode}

def size_upload
  result = {:export => {use: []}}
  
  return result unless self.uploads_enabled?
  
  ['', '_thumb'].each do |insert|
    w = "upload#{insert}_width".to_sym
    w? = "#{w}?".to_sym
    h = "upload#{insert}_height".to_sym
    h? = "#{h}?".to_sym
    
    if self.send(w?) && self.send(h?) 
      SIZING_METHODS.each do |method, result_key|
      if self.send(method)
        result["#{result_key}#{insert}".to_sym] = {
          width: self.send(w),
          height: self.send(h)
        }
      end
    end
  end
  
  SIZING_METHODS.each { |method, pushed_value| result[:export][:use].push(pushed_value.to_s).push("#{pushed_value}_thumb") if self.send(method) }

  result
end