Policy Wonk is a lightweight authorization and resource loading library for any Plug or Phoenix application.

I wrote a tutorial walking through how to set it up and use it. Read it here.

Policy Wonk provides three main plugs.

• PolicyWonk.LoadResource loads resources into the conn’s assigns map.
• PolicyWonk.Enforce evaluates a specified policy. It either continues or halts the plug chain depending on the policy result.
• PolicyWonk.EnforceAction evaluates a policy for each incoming controller action in Phoenix.

Decisions are made before controller actions are called, isolating authorization logic, encouraging policy re-use, and reducing the odds of messing Auth-Z up as you develop your controllers.

Check it out here:

• tutorial: https://medium.com/@boydm/policy-wonk-the-tutorial-6d2b6e435c46
• hex: https://hex.pm/packages/policy_wonk
• github: https://github.com/boydm/policy_wonk
• docs: https://hexdocs.pm/policy_wonk/PolicyWonk.html