1 files changed, 18 insertions, 0 deletions
diff --git a/rubocop/cop/active_record_serialize.rb b/rubocop/cop/active_record_serialize.rb
new file mode 100644
index 00000000000..204caf37f8b
--- /dev/null
+++ b/rubocop/cop/active_record_serialize.rb
@@ -0,0 +1,18 @@
+require_relative '../model_helpers'
+
+module RuboCop
+  module Cop
+    # Cop that prevents the use of `serialize` in ActiveRecord models.
+    class ActiveRecordSerialize < RuboCop::Cop::Cop
+      include ModelHelpers
+
+      MSG = 'Do not store serialized data in the database, use separate columns and/or tables instead'.freeze
+
+      def on_send(node)
+        return unless in_model?(node)
+
+        add_offense(node, :selector) if node.children[1] == :serialize
+      end
+    end
+  end
+end