In declarative_authorization you can do

      before_filter {|c| Authorization.current_user = c.current_user}

in ApplicationController, then call

      using_access_control

in Model, and you get current_user(or something like that) in your
model. Check how they do it.

Also, there is a hack from @lifo(Rails core team and 37signals member)
http://m.onkey.org/2007/10/17/how-to-access-session-cookies-params-request-in-model




On Sun, May 9, 2010 at 9:19 PM, Fuyi <[email protected]> wrote:
> how to  access variable in 3 level (model,controller,view)
>
> i use  session[:current_unit] only can in C and V
> can't access in M
>
> i mean is use a goloble variable can access in anywhere
>
> Such as:
>    user slecet a Unit,
>    in model, before  User.save  the user.unit_id must set
> session[:user_id]
>    in login form User must select a unit , this is current_unit, I
> save it in session[:user_id]
>    but how can i get it in model
>    or  there are an other mothed to handle it?
>
> thanks!
>
>
>
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