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Integration of imgproxy.rb with ActiveStorage::Variant API.

Installation

Add to your project:

# Gemfile
gem "imgproxy-rails"

Supported Ruby versions

• Ruby (MRI) >= 2.7.0
• JRuby >= 9.3.0

Supported Rails versions

• Rails >= 6.0.0

Usage

Given the following configuration:

# development.rb
config.active_storage.resolve_model_to_route = :rails_storage_proxy

# production.rb
config.active_storage.resolve_model_to_route = :imgproxy_active_storage

The following HTML snippet will generate different URLs in dev and prod:

# show.erb.html
<%= image_tag Current.user.avatar.variant(resize: "100x100") %>

In dev, it will generate a URL like this:

<img src="http://localhost:3000/rails/active_storage/blobs/proxy/eyJfcmFpbHMiOnsibWVzc2FnZSI6IkJBaHBBWHc9IiwiZXhwIjpudWxsLCJwdXIiOiJibG9iX2lkIn19--0c35e9a616c29da2dfa10a385bae7172526e7961/me.png">

In prod, it will generate a URL like this:

<img src="https://imgproxy.example.com/8uVB2dYrZVOdG-1tekFjNJZ7s7VHDViXJbu9TcQavQ8/fn:me.png/aHR0cDovL2xvY2Fs/aG9zdDozMDAwL3Jh/aWxzL2FjdGl2ZV9z/dG9yYWdlL2Jsb2Jz/L3Byb3h5L2V5SmZj/bUZwYkhNaU9uc2li/V1Z6YzJGblpTSTZJ/a0pCYUhCQldIYzlJ/aXdpWlhod0lqcHVk/V3hzTENKd2RYSWlP/aUppYkc5aVgybGtJ/bjE5LS0wYzM1ZTlh/NjE2YzI5ZGEyZGZh/MTBhMzg1YmFlNzE3/MjUyNmU3OTYxL21l/LnBuZw">

You can also specify imgproxy-specific parameters in imgproxy_options attribute. Imgproxy-specific params will take precedence over ones from original API:

# height=50 and width=50 will be applied
Current.user.avatar.variant(resize: "100x100", imgproxy_options: {height: 50, width: 50})

Generating video and PDF previews

If you are an imgproxy Pro user and you want to use it to generate previews for your videos and PDFs, just add their content types to the variable_content_types list:

config.active_storage.variable_content_types << "application/pdf"
config.active_storage.variable_content_types << "video/mp4"
config.active_storage.variable_content_types << "video/mov"
# ...etc

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/imgproxy/imgproxy-rails.

Credits

This gem is generated via new-gem-generator.

License

The gem is available as open source under the terms of the MIT License.