Writing to excel files in ruby using roo gem

Writing to excel files in ruby using roo gem

To write to Excel files in Ruby using the roo gem, you need to use another gem such as write_xlsx since roo gem is mainly used for reading Excel files. Here's how you can do it:

First, install the required gems:

gem install roo write_xlsx

Then, you can use the following code to write data to an Excel file:

require 'write_xlsx' # Create a new Excel workbook workbook = WriteXLSX.new('output.xlsx') # Add a worksheet worksheet = workbook.add_worksheet # Write data to the worksheet worksheet.write('A1', 'Hello') worksheet.write('B1', 'World') # Close the workbook workbook.close puts "Data has been written to output.xlsx"

This code will create a new Excel file named output.xlsx and write the data "Hello" to cell A1 and "World" to cell B1.

Examples

  1. How to install the roo gem for writing Excel files in Ruby

    • Description: This example shows how to install the roo gem, which is necessary for working with Excel files in Ruby.
    • Code:
    gem install roo

  2. Reading from an Excel file using roo gem in Ruby

    • Description: This example demonstrates how to read data from an existing Excel file using the roo gem.
    • Code:
    require 'roo' xlsx = Roo::Spreadsheet.open('example.xlsx') sheet = xlsx.sheet(0) sheet.each_with_index do |row, index| puts "#{index}: #{row.inspect}" end

  3. Writing to an Excel file using roo and rubyXL gems in Ruby

    • Description: This example demonstrates how to write data to an Excel file by combining roo for reading and rubyXL for writing.
    • Code:
    require 'roo' require 'rubyXL' workbook = RubyXL::Workbook.new worksheet = workbook[0] worksheet.add_cell(0, 0, 'Name') worksheet.add_cell(0, 1, 'Age') worksheet.add_cell(1, 0, 'Alice') worksheet.add_cell(1, 1, 30) worksheet.add_cell(2, 0, 'Bob') worksheet.add_cell(2, 1, 25) workbook.write('output.xlsx')

  4. Appending data to an existing Excel file in Ruby using roo and rubyXL

    • Description: This example shows how to append data to an existing Excel file using both roo and rubyXL.
    • Code:
    require 'roo' require 'rubyXL' xlsx = Roo::Spreadsheet.open('example.xlsx') workbook = RubyXL::Parser.parse('example.xlsx') worksheet = workbook[0] new_row = xlsx.last_row + 1 worksheet.add_cell(new_row, 0, 'Charlie') worksheet.add_cell(new_row, 1, 28) workbook.write('example.xlsx')

  5. Creating a new Excel file and adding data using roo and rubyXL in Ruby

    • Description: This example demonstrates how to create a new Excel file and add data to it using roo and rubyXL.
    • Code:
    require 'rubyXL' workbook = RubyXL::Workbook.new worksheet = workbook[0] worksheet.add_cell(0, 0, 'ID') worksheet.add_cell(0, 1, 'Value') (1..10).each do |i| worksheet.add_cell(i, 0, i) worksheet.add_cell(i, 1, "Value #{i}") end workbook.write('new_file.xlsx')

  6. Updating specific cells in an Excel file using roo and rubyXL in Ruby

    • Description: This example shows how to update specific cells in an Excel file.
    • Code:
    require 'roo' require 'rubyXL' workbook = RubyXL::Parser.parse('example.xlsx') worksheet = workbook[0] worksheet.sheet_data[1][1].change_contents(35) # Update Bob's age to 35 workbook.write('example.xlsx')

  7. Formatting cells while writing to an Excel file using rubyXL in Ruby

    • Description: This example demonstrates how to format cells while writing data to an Excel file using rubyXL.
    • Code:
    require 'rubyXL' workbook = RubyXL::Workbook.new worksheet = workbook[0] cell = worksheet.add_cell(0, 0, 'Formatted Cell') cell.change_font_bold(true) cell.change_fill('FFFF00') workbook.write('formatted.xlsx')

  8. Writing multiple sheets to an Excel file using rubyXL in Ruby

    • Description: This example shows how to write data to multiple sheets in an Excel file using rubyXL.
    • Code:
    require 'rubyXL' workbook = RubyXL::Workbook.new sheet1 = workbook[0] sheet1.sheet_name = 'Sheet1' sheet1.add_cell(0, 0, 'Data for Sheet1') sheet2 = workbook.add_worksheet('Sheet2') sheet2.add_cell(0, 0, 'Data for Sheet2') workbook.write('multi_sheets.xlsx')

  9. Reading and writing Excel files with different formats using roo gem in Ruby

    • Description: This example demonstrates how to read and write Excel files in different formats (.xlsx, .xls) using the roo gem.
    • Code:
    require 'roo' xlsx = Roo::Spreadsheet.open('example.xlsx') xls = Roo::Spreadsheet.open('example.xls') xlsx.sheet(0).each { |row| puts row.inspect } xls.sheet(0).each { |row| puts row.inspect }

  10. Handling large Excel files efficiently using roo gem in Ruby

    • Description: This example shows how to handle large Excel files efficiently using the roo gem by streaming rows.
    • Code:
    require 'roo' xlsx = Roo::Excelx.new('large_file.xlsx') xlsx.each_row_streaming(offset: 1) do |row| puts row.map(&:value).inspect end

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