Can a filter access properties from my BaseController?

问题

I have a basecontroller that has a property like:

public class BaseController : Controller 
{
    public User CurrentUser {get;set;}

    protected override void OnActionExecuting(ActionExecutingContext filterContext)
    {
        // if session cookie found, set User object here
    }
}

Now I want to create an action filer that I could set on controllers or actions that I want to do something like:

if (User.IsAdmin) 
{
} 
else 
{
    // redirect to login or some page 
}

So this filter @AdminOnly I could put on a controller or action and this will ensure that only users who have the IsAdmin flag set will be able to view the action.

Does a filter have visibility into the currently executing controller?

回答1:

Can't you use

if (filterContext.Controller is BaseController)
{
    BaseController ctr = (BaseController)filterContext.Controller;
    if (ctr.User.IsAdmin)
    {....}
}

Link

来源：https://stackoverflow.com/questions/26023954/can-a-filter-access-properties-from-my-basecontroller