web: controllers: extract loading specified user

1 files changed, 9 insertions, 3 deletions

diff --git a/app/controllers/application_controller.rb b/app/controllers/application_controller.rb
index e2efb08..fe1f1a9 100644
--- a/app/controllers/application_controller.rb
+++ b/app/controllers/application_controller.rb
@@ -30,13 +30,19 @@ class ApplicationController < ActionController::Base
   end
 
   def authorize!(object)
-    if object.is_a? User
-      authorized_to_show_user?(object) || raise(Aclog::Exceptions::UserProtected, object)
-    elsif object.is_a? Tweet
+    case object
+    when User
+      unless authorized_to_show_user?(object)
+        raise(Aclog::Exceptions::UserProtected, object)
+      end
+    when Tweet
       authorize! object.user
+    when NilClass
+      raise Aclog::Exceptions::NotFound
     else
       raise ArgumentError, "parameter `object` must be a User or a Tweet"
     end
+
     object
   end