How can I send a parameter to a before filter?

Question

I\'d like to create a before_filter method in my application controller like this...

def check_role(role_name)
  unless logged_in_user.has_role? role_name
    fl         


        

Answer 1

I don't believe you can pass parameters to filters. So what I have do in the past is made static methods that pass the parameter to the method that needs the params.

So I would have something like this:

def check_role(role_name)
  unless logged_in_user.has_role? role_name
    flash[:notice] = 'Access to that area requires additional privileges.'
    redirect_to :back
  end
end

def check_admin_role
   check_role('admin')
end

def check_blah_role
   check_role('blah')
end

Then in your controller you'd just call

before_filter :check_admin_role

There is probably some way to implement this with meta-programming but I am still quite a n00b and haven't figured that part out yet ;)