Active Admin Axlsx

Office Open XML Spreadsheet Export for Active Admin

The original gem is located here: https://github.com/randym/activeadmin-axlsx

Synopsis

This gem provides automatic OOXML (xlsx) downloads for Active Admin resources. It lets you harness the full power of Axlsx when you want to but for the most part just stays out of your way and adds a link next to the csv download for xlsx (Excel/numbers/Libre Office/Google Docs)

Usage

Simply add the following to your Gemfile and you are good to go. All resource index views will now include a link for download directly to xlsx.

gem 'activeadmin-axlsx', git: 'https://github.com/thambley/activeadmin-axlsx.git'

For Active Admin 1.0, you will also have to update config/initializers/active_admin.rb. Update the download_links setting to include xls:

config.download_links = %i[csv xml json xlsx]

Examples

Here are a few quick examples of things you can easily tweak. Axlsx supports A LOT of the specification so if you are looking to do something adventurous please ping me on irc. (freenode#axlsx)

localize column headers

#app/admin/posts.rb
ActiveAdmin.register Post do
  config.xlsx_builder.i18n_scope = [:active_record, :models, :posts]
end

Use blocks for adding computed fields

#app/admin/posts.rb
ActiveAdmin.register Post do
  config.xlsx_builder.column('author_name') do |resource|
    resource.author.name
  end
end

Change the column header style

#app/admin/posts.rb
ActiveAdmin.register Post do
  config.xlsx_builder.header_style = { :bg_color => 'FF0000',
                                       :fg_color => 'FF' }
end

Remove columns

#app/admin/posts.rb
ActiveAdmin.register Post do
  config.xlsx_builder.delete_columns :id, :created_at, :updated_at
end

Using the DSL

Everything that you do with the config'd default builder can be done via the resource DSL.

Below is an example of the DSL

ActiveAdmin.register Post do

  # i18n_scope and header style are set via options
  xlsx(:i18n_scope => [:active_admin, :axlsx, :post],
       :header_style => {:bg_color => 'FF0000', :fg_color => 'FF' }) do

    # Specify that you want to white list column output.
    # whitelist

    # Do not serialize the header, only output data.
    # skip_header

    # deleting columns from the report
    delete_columns :id, :created_at, :updated_at

    # adding a column to the report
    column(:author) { |resource| "#{resource.author.first_name} #{resource.author.last_name}" }

    # creating a chart and inserting additional data with after_filter
    after_filter { |sheet|
      sheet.add_row []
      sheet.add_row ['Author Name', 'Number of Posts']
      data = []
      labels = []
      User.all.each do |user|
        data << user.posts.size
        labels << "#{user.first_name} #{user.last_name}"
        sheet.add_row [labels.last, data.last]
      end
      chart_color =  %w(88F700 279CAC B2A200 FD66A3 F20062 C8BA2B 67E6F8 DFFDB9 FFE800 B6F0F8)
      sheet.add_chart(::Axlsx::Pie3DChart, :title => "post by author") do |chart|
        chart.add_series :data => data, :labels => labels, :colors => chart_color
        chart.start_at 4, 0
        chart.end_at 7, 20
      end
    }

    # iserting data with before_filter
    before_filter do |sheet|
      sheet.add_row ['Created', Time.zone.now]
      sheet.add_row []
    end
  end
end

Testing

Running specs for this gem requires that you construct a rails application.

To execute the specs, navigate to the gem directory, run bundle install and run these to rake tasks:

Rails 4.2

bundle install --gemfile=gemfiles/rails_42.gemfile

BUNDLE_GEMFILE=gemfiles/rails_42.gemfile bundle exec rake setup

BUNDLE_GEMFILE=gemfiles/rails_42.gemfile bundle exec rake

Rails 5.1

bundle install --gemfile=gemfiles/rails_51.gemfile

BUNDLE_GEMFILE=gemfiles/rails_51.gemfile bundle exec rake setup

BUNDLE_GEMFILE=gemfiles/rails_51.gemfile bundle exec rake

Copyright and License

activeadmin-axlsx © 2012 ~ 2013 by Randy Morgan.

activeadmin-axlsx is licensed under the MIT license. Please see the LICENSE document for more information.