Rails - Sep 2006 - Getting a list of possible actions from a controller

I''m working on a role based authentication scheme.

It defines roles, which are assigned to users.

The roles are action->controller pairs, and if a user has a role 
containing an action/controller, they my access that pair.

Works great.

However, the administration needs to auto-discover all possible 
action->controller pairs for the entire application.

Now, I can get a list of all controllers, no problem.

The problem is that the controller has no way to tell me what it''s 
possible actions are.  I can get function lists, hidden actions, and all 
that, but no way of getting just plain old actions from a controller 
class or an instantiated controller.

Any ideas?

-- 
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As ''actions'' are simply the methods defined on the controller,
this should
work (though I can''t test it right now):

ControllerClass.instance_methods - ActionController::Base.instance_methods

Jason

On 9/28/06, Mike
<rails-mailing-list-ARtvInVfO7ksV2N9l4h3zg@public.gmane.org>
wrote:
>
>
> I''m working on a role based authentication scheme.
>
> It defines roles, which are assigned to users.
>
> The roles are action->controller pairs, and if a user has a role
> containing an action/controller, they my access that pair.
>
> Works great.
>
> However, the administration needs to auto-discover all possible
> action->controller pairs for the entire application.
>
> Now, I can get a list of all controllers, no problem.
>
> The problem is that the controller has no way to tell me what it''s
> possible actions are.  I can get function lists, hidden actions, and all
> that, but no way of getting just plain old actions from a controller
> class or an instantiated controller.
>
> Any ideas?
>
> --
> Posted via http://www.ruby-forum.com/.
>
> >
>

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On 28 September 2006 19:11, Jason Roelofs wrote:
> As ''actions'' are simply the methods defined on the
controller, this should
> work (though I can''t test it right now):
>
> ControllerClass.instance_methods - ActionController::Base.instance_methods
This won''t work because not all instance methods are considered
actions. Some
methods are hidden (with hide_actions method).

You''d better use class method ActionController::Base.action_methods or
it''s
instance method analogue.

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Ah, so there is something like that. You''ll have to go diving around in
ActionController itself to find such methods though, they aren''t on the
documentation most of the time.

Jason

On 9/28/06, Maxim Kulkin
<maxim.kulkin-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
>
>
> On 28 September 2006 19:11, Jason Roelofs wrote:
> > As ''actions'' are simply the methods defined on the
controller, this
> should
> > work (though I can''t test it right now):
> >
> > ControllerClass.instance_methods - ActionController::
> Base.instance_methods
> This won''t work because not all instance methods are considered
actions.
> Some
> methods are hidden (with hide_actions method).
>
> You''d better use class method
ActionController::Base.action_methods or
> it''s
> instance method analogue.
>
> >
>

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The "user" engine does this in the Permission model 
(synchronize_with_controllers method). Take a look at that code for 
ideas.

c.


Mike wrote:
> I''m working on a role based authentication scheme.
> 
> It defines roles, which are assigned to users.
> 
> The roles are action->controller pairs, and if a user has a role 
> containing an action/controller, they my access that pair.
> 
> Works great.
> 
> However, the administration needs to auto-discover all possible 
> action->controller pairs for the entire application.
> 
> Now, I can get a list of all controllers, no problem.
> 
> The problem is that the controller has no way to tell me what it''s
> possible actions are.  I can get function lists, hidden actions, and all 
> that, but no way of getting just plain old actions from a controller 
> class or an instantiated controller.
> 
> Any ideas?

-- 
Posted via http://www.ruby-forum.com/.

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