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Loading Zip Codes with SmarterCSV Gem
source link: https://fuzzyblog.io/blog/rails/2020/03/18/loading-zip-codes-with-smartercsv-gem.html
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Loading Zip Codes with SmarterCSV Gem
Mar 18, 2020
Zip code data is always problematic due to the leading zeros. The smarter_csv gem in Rails defaults to automatically handling numbers as numerics, not strings, which means that you lose 00408 to just 408. Here's an example of a work around using a rake task to load data:
# bundle exec rake data:import_geography --trace
task :import_geography => :environment do
path = File.join(Rails.root, 'lib/tasks/data/', 'Geocodes_USA_with_Counties.csv')
geographies = SmarterCSV.process(path, {
hash_transformations: [ :convert_values_to_numeric_unless_leading_zeros],
convert_values_to_numeric: { except: [:zip] }} )
geographies.each do |g|
g_obj = Geography.find_or_create(g)
end
end
Note: This wasn't the accepted work around but a hack; sigh. The :convert_values_to_numeric_unless_leading_zeros transformation doesn't seem work. Issue filed; I hope to fix this myself down the road.
Posted In: #rails #csv #covidnearme.org
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