rails_admin

https://github.com/railsadminteam/rails_admin

Ruby

RailsAdmin is a Rails engine that provides an easy-to-use interface for managing your data

DeclarativePolicy::Base#runner

returns a Runner for the given ability, capable of computing whether
the ability is allowed. Runners are cached on the policy (which itself
is cached on @cache), and caches its result. This is how we perform caching
at the ability level.

Source | Google | Stack overflow

Edit

git clone [email protected]:railsadminteam/rails_admin.git
cd rails_admin
open

Contribute

# Make a new branch

git checkout -b -your-name--update-docs-DeclarativePolicy--Base-runner-for-pr

# Commit to git

git add git commit -m "better docs for DeclarativePolicy::Base#runner"

# Open pull request

gem install hub # on a mac you can `brew install hub`

hub fork

git push <your name> -your-name--update-docs-DeclarativePolicy--Base-runner-for-pr

hub pull-request

# Celebrate!