mootpointer · May 6, 2015 02:28 · May 6, 2015
diff --git a/update_user.rb b/update_user.rb
@@ -0,0 +1,27 @@
+require 'active_support/core_ext/hash/slice'
+
+module MyCompany
+  module Services
+    class UpdateUser
+      attr_reader :user, :params
+      def initialize user, params
+        @user, @params = user, params
+      end
+
+      def allowed_params
+        [
+          "first_name", "last_name", "avatar_url", "email"
+        ]
+      end
+
+      def cleaned_params
+        @params.slice(*allowed_params)
+      end
+
+      def call
+        user.update!(cleaned_params)
+      end
+
+    end
+  end
+end