Class: DataExport::Exporter

Inherits:
Object
  • Object
show all
Defined in:
lib/export_data.rb

Overview

Exporter class for handling data exports to CSV

Class Method Summary collapse

Class Method Details

.export_to_csv(objects, file_path) ⇒ void

This method returns an undefined value.

Exports data to a CSV file.

This method takes an array of objects and exports them to a CSV file specified by the ‘file_path`. It expects that the first object in the array defines the column names for the CSV file.

Examples:

Export user data to CSV:

objects = [user1, user2]
DataExport::Exporter.export_to_csv(objects, 'users.csv')

Parameters:

  • objects (Array) —

    The objects to export to CSV.

  • file_path (String) —

    The path to the CSV file to be created.



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# File 'lib/export_data.rb', line 26

def self.export_to_csv(objects, file_path)
  begin
    CSV.open(file_path, 'w') do |csv|
      if objects.empty?
        puts 'No objects to export.' # Or handle this case as needed
        return
      end
      
      # Write the header row using the first object's attributes
      csv << objects.first.attributes.keys
      
      # Write the object's attribute values as data rows
      objects.each do |obj|
        csv << obj.attributes.values
      end
    end
  rescue CSV::MalformedCSVError => e
    puts "An error occurred while exporting to CSV: #{e.message}"
  rescue Errno::ENOENT => e
    puts "An error occurred while exporting to CSV: #{e.message}"
  end
end

.export_to_text(objects, file_path) ⇒ Object 



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# File 'lib/export_data.rb', line 49

def self.export_to_text(objects, file_path)
  begin
    File.open(file_path, 'w') do |file|
      if objects.empty?
        puts 'No objects to export.' # Or handle this case as needed
        return
      end
      
      # Write the object's attribute values as text lines
      objects.each do |obj|
        file.puts(obj.attributes.values.join("\t")) # Use '\t' as a delimiter for tab-separated values
      end
    end
  rescue Errno::ENOENT => e
    puts "An error occurred while exporting to text: #{e.message}"
  end
end