Fix Rails 5 before_filter deprecation warning

lib/authority/controller.rb

@@ -45,7 +45,11 @@ def authorize_actions_for(resource_or_finder, options = {})
         self.authority_resource = resource_or_finder
         add_actions(options.fetch(:actions, {}))
         force_action(options[:all_actions]) if options[:all_actions]
-        before_filter :run_authorization_check, options
+        if respond_to? :before_action
+          before_action :run_authorization_check, options
+        else
+          before_filter :run_authorization_check, options
+        end
       end
 
       # Allows defining and overriding a controller's map of its actions to the model's authorizer methods

spec/authority/controller_spec.rb

@@ -89,6 +89,12 @@ def self.before_filter(*args) ; end
 
         let(:child_controller) { Class.new(controller_class) }
 
+        let(:rails5_controller) do
+          Class.new(controller_class) do
+            def self.before_action(*args) ; end
+          end
+        end
+
         it "allows specifying the class of the model to protect" do
           controller_class.authorize_actions_for(resource_class)
           expect(controller_class.authority_resource).to eq(resource_class)
@@ -105,6 +111,12 @@ def self.before_filter(*args) ; end
           controller_class.authorize_actions_for(resource_class, filter_options)
         end
 
+        it "prefers to set up a before_action over before_filter, passing the options it was given" do
+          filter_options = {:only => [:show, :edit, :update]}
+          expect(rails5_controller).to receive(:before_action).with(:run_authorization_check, filter_options)
+          rails5_controller.authorize_actions_for(resource_class, filter_options)
+        end
+
         it "if :all_actions option is given, it overrides the action hash to use the action given" do
           overridden_action_map = controller_class.authority_action_map
           overridden_action_map.update(overridden_action_map) {|k,v| v = :annihilate}