ActiveStorage::SendZip

Add a send_zip method in your Rails controller to send a .zip file containing one or many ActiveStorage objects.

Assuming you have an ActiveRecord model with ActiveStorage like this:

# app/models/user.rb
class User < ApplicationRecord
  has_many_attached :pictures
end

You simply have to include ActiveStorage::SendZip in your controller & use ActiveStorage::SendZip#send_zip method. Just pass some ActiveStorage::Attached objects as parameters:

# app/controllers/users_controller.rb
class UsersController < ApplicationController
  include ActiveStorage::SendZip

  # ...

  # GET /users/1
  # GET /users/1.zip
  def show
    respond_to do |format|
      format.html { render }
      format.zip { send_zip @user.pictures }
    end
  end
end

Will produce a .zip archive like this:

├── a.jpg
├── b.png
└── c.gif

Ii will also prevent duplicate filename and add an SecureRandom.uuid if two files as the same name.

You can also pass an Hash parameter at send_zip method to organize files in sublfolder:

# app/controllers/holidays_controller.rb
class HolidaysController < ApplicationController
  include ActiveStorage::SendZip

  def zip
    send_zip({
      'Holidays in Lyon <3' => Holidays.where(place: 'lyon').first.pictures,
      'Holidays in Paris' => [
        'Eiffle Tower' => Holidays.where(place: 'eiffle_tower').first.pictures,
        Holidays.where(place: 'paris').first.pictures
      ]
    })
  end
end

Will produce a .zip archive like this:

├── Holidays in Lyon <3
│   ├── a.jpg
│   ├── b.png
│   └── c.gif
└── Holidays in Paris
    ├── Eiffle Tower
        ├── d.jpg
        ├── e.jpg
        ├── f.jpg
    ├── a.jpg
    ├── b.png
    └── c.gif

Note: has_many_attached associations (like Holidays.where(place: 'lyon').first.pictures) are now properly supported and will automatically extract the individual attachments.

You can resize the images before zipping and downloading them :

# app/controllers/galleries_controller.rb
class GalleriesController < ApplicationController
  include ActiveStorage::SendZip

  # ...

  # GET /galleries/1/download
  def download
    respond_to do |format|
      if params[:format] == 'web_size'
        format.zip { send_zip @gallery.photos, resize_to_limit: [1920, 1080] }
      elsif params[:format] == 'tiny'
        format.zip { send_zip @gallery.photos, resize_to_limit: [480, 270] }
      else
        format.zip { send_zip @gallery.photos }
      end
    end
  end
end

Add this line to your application's Gemfile:

gem 'active_storage-send_zip'

And then execute:

$ bundle

Or install it yourself as:

$ gem install active_storage-send_zip

After checking out the repo, run bin/setup to install dependencies. Then, run rake test to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

Bug reports and pull requests are welcome on GitHub at https://github.com/madeindjs/active_storage-send_zip. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.

Everyone interacting in the ActiveStorage::SendZip project’s codebases, issue trackers, chat rooms and mailing lists is expected to follow the code of conduct.