1 files changed, 19 insertions, 0 deletions
diff --git a/activemodel/lib/active_model/deprecated_mass_assignment_security.rb b/activemodel/lib/active_model/deprecated_mass_assignment_security.rb
new file mode 100644
index 0000000000..16b8466e55
--- /dev/null
+++ b/activemodel/lib/active_model/deprecated_mass_assignment_security.rb
@@ -0,0 +1,19 @@
+module ActiveModel
+  module DeprecatedMassAssignmentSecurity
+    extend ActiveSupport::Concern
+
+     module ClassMethods
+       def attr_protected(*args)
+         raise "`attr_protected` is extracted out of Rails into a gem. " \
+           "Please use new recommended protection model for params " \
+           "or add `protected_attributes` to your Gemfile to use old one."
+       end
+
+       def attr_accessible(*args)
+         raise "`attr_accessible` is extracted out of Rails into a gem. " \
+           "Please use new recommended protection model for params " \
+           "or add `protected_attributes` to your Gemfile to use old one."
+       end
+     end
+  end
+end