All Your Records As CSV, fast and generic

Our admins are always data-greedy, so i provided a method that lets them get detailed data on any search result they like. Be careful to not let normal users access this (hide email addresses etc).

Installation

  • Provide a current_model method that returns which model the controller is working on.
  • Store the objects you want to render in @current_objects.
  • add this block to every index action response (in a DRY way…)

Usage

  • Visit /xxx/anything.csv to get all data in csv
format.csv do
  #collect data
  keys = current_model.new.attributes.keys.sort
  csv_string = FasterCSV.generate do |csv|
    csv << keys
    @current_objects.each do |record|
      csv << record.attributes.sort_by{|k,v|k}.map{|arr|arr[1]}
    end
  end

  #send data
  filename = current_model.to_s.downcase.gsub(/[^0-9a-z]/, "_") + ".csv"
  send_data(csv_string,
    :type => 'text/csv; charset=utf-8; header=present',
    :filename => filename
  )
end
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