gistfile1.rb

def save
    if file.present?
      cleanup_before_save
  
      #logger.debug "--> Trying to read csv file..."
      content = File.read(@file.tempfile)
      #logger.debug "--> Loading csv contents into db..."
      @csv_content = VenueImportCsv.create(content: content)
      
      process_files!(@csv_content.id)
    else
      errors.add :csv_file, "can't be blank"
    end
  rescue ArgumentError, CSV::MalformedCSVError => e
    errors.add :csv_file, "is not valid"
  end