omg_image

Generate preview images on the fly for your HTML snippets.

Usage

Requirements

• Google chrome (headless)

Installation

Add this line to your application's Gemfile:

gem 'omg_image'

And then execute:

$ bundle

Or install it yourself as:

$ gem install omg_image

Google Chrome Installation

• sudo apt install gdebi-core
• wget https://dl.google.com/linux/direct/google-chrome-stable_current_amd64.deb
• sudo gdebi google-chrome-stable_current_amd64.deb
• verify chrome is installed google-chrome --version

Development

• install chrome headless
• add to /etc/hosts new host 127.0.0.0 site.com

- in puma.rb put workers ENV.fetch("WEB_CONCURRENCY") { 3 } (required because screenshot is made from another request)

More about Chrome

• https://linuxize.com/post/how-to-install-google-chrome-web-browser-on-ubuntu-18-04/

Issues

• if you process too many requests and because of timeouts dead processes may appear. To kill them parents_of_dead_kids=$(ps -ef | grep [d]efunct | awk '{print $3}' | sort | uniq | egrep -v '^1$'); echo "$parents_of_dead_kids" | xargs kill

Contributing

You are welcome to contribute.

License

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