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Mention second argument to authorize in README

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Jonas Nicklas 2012-11-19 13:06:48 +01:00
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@ -87,6 +87,18 @@ and the given record. It then infers from the action name, that it should call
raise "not authorized" unless PostPolicy.new(current_user, @post).create?
```
You can pass a second arguent to `authorize` if the name of the permission you
want to check doesn't match the action name. For example:
``` ruby
def publish
@post = Post.find(params[:id])
authorize @post, :update?
@post.publish!
redirect_to @post
end
```
You can easily get a hold of an instance of the policy through the `policy`
method in both the view and controller. This is especially useful for
conditionally showing links or buttons in the view: