How to create download button for CSV and PDF using Ruby on Rails

rails g scaffold Note title

rails db:migrate

bundle add prawn prawn-table

# add route in file config/routes.rbresources :notesroot 'notes#index'post 'download/notes', to: 'notes#download'# add method downlod in controller app/controllers/notes_controller.rbdef download    respond_to do |format|      format.csv { send_data Note.to_csv, filename: "notes-#{Date.today}.csv" }      format.pdf { send_data Note.to_pdf, filename: "notes-#{Date.today}.pdf" }    endend# adds concerns to the note model to export the dataclass Note < ApplicationRecord  include ExportCsv  include ExportPdfend# now let's create the modules in app/models/concerns# first export_csv.rb# frozen_string_literal: true# module ExportCSVmodule ExportCsv  extend ActiveSupport::Concern  # module ClassMethods  module ClassMethods    def to_csv      require 'csv'      options = { col_sep: ';', encoding: 'utf-8' }      headers = %i[id title]      CSV.generate(headers: true, **options) do |csv|        csv << headers        all.each do |note|          csv << [note.id, note.title]        end      end    end  endend# second export_pdf.rb# frozen_string_literal: true# module ExportPdfmodule ExportPdf  extend ActiveSupport::Concern  # module ClassMethods  module ClassMethods    def to_pdf      require 'prawn'      require 'prawn/table'      options = { position: :center, column_widths: [300, 300], width: 600 }      header = %w[ID Title]      data = all.map { |note| [note.id, note.title] }      Prawn::Document.new do        text 'All Notes', align: :center, size: 18, style: :bold        table([header, *data], header: true, **options)      end.render    end  endend# and finally add the links on the app/views/notes/index.html.erb page<%= button_to "Download CSV", download_notes_path(request.params.merge(format: :csv)), data: {turbo: :false} %><%= button_to "Download PDF", download_notes_path(request.params.merge(format: :pdf)), data: {turbo: :false} %>