NoMemoryError：无法分配内存

Question

I have an xlsx file with a lot of data, and I have this script to insert data from the xlsx file into my own database:

file = 'lib/assets/sicepatfull.xlsx'
xlsx = Roo::Spreadsheet.open(file)
sheet = xlsx.sheet(0)
attrs = sheet.row(1)
data = sheet.parse(header_search: attrs).map do |d|
  d.map {|k, v| [k.parameterize.underscore.to_sym, v] }.to_h.except :id
end
Courier.create!(data)

The command is cancelled after the attrs , and the result is: NoMemoryError: failed to allocate memory .

How do I fix it?

Answer 1

Roo loads the whole file to memory, so if the file is big, it may just be too big for your RAM.

You can use alternative XLSX readers, eg

• creek - stream reader
• rubyXL