Allow resource to specify the authorizer by class

[mguymon]

Add the ability to define the authorizer by class, such as

self.authorizer_class = GreatAuthorizer

in addition to

self.authorizer_name = "GreateAuithorizer"

This will allow runtime classes to be used as the Authorizer.

For my scenario, we have a authorizer generator that tweaks the authorizer at runtime for each class.

[nathanl]

For my scenario, we have a authorizer generator that tweaks the authorizer at runtime for each class.

I'm having a hard time picturing your use case and would love to hear more about it if you care to explain.

For instance:

• When you say "at runtime", do you mean when the app boots, or possibly multiple times while it's running?
• If the latter, what tells you that a model needs a different authorizer?
• Are you generating authorizer classes on the fly, or are you just changing which pre-existing authorizer a model uses?

[mguymon]

The Rails app extensively uses STI, so a Content model will be subclassed into Article, SlideShow, etc. Authorized actions to the model also depends on a workflow (Article is approved by an Editor, so it can now be Read by a User). The ContentAuthorizerGenerator creates an Authorize class with configurations for the specific model being used. The authorizer is generated once for each model based on app's runtime config:

include Authority::Abilities
self.authorizer_class = ContentAuthorizerGenerator.create(Article, opts)

[nathanl]

I see. Well, the pull request is merged! I'll try to release a new version soon; in the meantime you can point your Gemfile to the merge commit on Github if you want.