Redirects in Rails

Rails
#1

I have a question :

I have Users that have a boolean attribute “Admin”.
What I did is basically : “if admin attribute is set on false, then a
writing appears telling that ‘you must be an admin to see this zone’”.

I wanted to organize things differently, for example:
“if the logged user is logged, and if he has an Admin-attribute set on
true, then he may get to the requested aministration page, else, he’ll
be redirected at login page”.

I have a current_user method :

def current_user
@current_user ||= User.find(session[:user_id]) if session[:user_id]
end

but I tried to add it into the controller, the model and application
controller, with just getting error.

Is it possibile to implement, in your opinion?

#2

if you are building athentication from scratch this method can be
accessed
by the controller and views by putting that method in the
application_controller and adding

def current_user
@current_user ||= User.find(session[:user_id]) if session[:user_id]
end
helper_method :current_user

this will make it available to other controllers and views, session data
is
not accesible from the models.

What you want to do is done with a before filter in the controller like
this:

at the top of the controllers you add

before_filter :check_if_cool_enough

at the bottom

private
def check_if_cool_enough
if current_user.admin?
flash[:notice] = “YOU ARE SOOO COOL”
else
flash[:error] = “omg, lol noob”
redirect_to root_path
end
end