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Mattamorphic/compress_csv.rb

Created April 15, 2021 05:56
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Compression Rails
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compress_csv.rb
Tempfile.open(["#{Rails.root}/tmp/", ".csv"]) do |f|
# Write the batch to a csv file (cheaper than 5000 queries)
f = ActiveSupport::Gzip.compress(ModelDatum.where(model_id: 2).pluck(:id, :preprocessed_data).map(&:to_csv).join)
puts f.size()
puts ActiveSupport::Gzip.decompress(f)
end
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