正在获取Errno :: ENOENT：此类文件或目录@ rb_sysopen尝试在Roo gem中打开远程文件url时（Ruby on rails）

Question

I have stored an file in AWS s3 storage when trying to open an file to import data using roo gem, It raising following error Errno::ENOENT: No such file or directory @ rb_sysopen

def self.import(file, user_id)
        imported_file = ImportedFile.find(file)
        spreadsheet = Roo::Spreadsheet.open(open(imported_file.file_url), extension: :csv)
        spreadsheet = Roo::Spreadsheet.open(imported_file.file)
      header = spreadsheet.row(1)//raising error here
end

I even tried this also

spreadsheet = Roo::Spreadsheet.open(imported_file.file_url)

Getting below error in log

Errno::ENOENT: No such file or directory @ rb_sysopen - /uploads/imported_files/7a6f0463-b3cd-48f8-a579-bc27951242fe/13c96e3e-d3f3-4ed8-8d9a-b9ea03c0cc8c.csv

Answer 1

To open URLs you should require the open-uri library first:

require 'open-uri'

See the example:

open('http://example.com/')
# throws Errno::ENOENT: No such file or directory @ rb_sysopen - http://example.com/

require 'open-uri'
open('http://example.com/')
# opens the website

Answer 2

最后，下面的代码为我工作。

spreadsheet = Roo::Spreadsheet.open(open(imported_file.file_url), extension: File.extname(imported_file.file_url).gsub('.','').to_sym) rescue nil