Module: Carnival::CsvStream

Defined in:
app/controllers/carnival/csv_stream.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.included(base) ⇒ Object 



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# File 'app/controllers/carnival/csv_stream.rb', line 3

def self.included(base)
  base.class_eval do
    include ActionController::Live
  end
end

Instance Method Details

#stream_csv(relation, lines_per_chunk, presenter) ⇒ Object 



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# File 'app/controllers/carnival/csv_stream.rb', line 9

def stream_csv(relation, lines_per_chunk, presenter)
  begin
    relation.find_each(batch_size: lines_per_chunk) do |record|
      response.stream.write presenter.csv_for_record(record)
    end
  ensure
    response.stream.close
  end
end