Roo with rails4 giving undefined method `[]' for nil:NilClass

Question

I\'m trying to import CSV and Excel files into a rails 4 project (with validation) using the Roo gem, based on http://railscasts.com/episodes/396-importing-csv-and-excel.

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Answer 1

I had the same problem, it seems a problem about file enconding, I used this code and it was fixed.

def open_spreadsheet
    case File.extname(file.original_filename)
        when ".csv" then Roo::CSV.new(file.path, csv_options: {encoding: "iso-8859-1:utf-8"})
        when ".xls" then Roo::Excel.new(file.path, nil, :ignore)
        when ".xlsx" then Roo::Excelx.new(file.path, nil, :ignore)
        else raise "Unknown file type: #{file.original_filename}"           
    end 
end

I hope that helps for you.