1 files changed, 3 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/postgresql/oid/array.rb b/activerecord/lib/active_record/connection_adapters/postgresql/oid/array.rb
index cd5efe2bb8..c203e6c604 100644
--- a/activerecord/lib/active_record/connection_adapters/postgresql/oid/array.rb
+++ b/activerecord/lib/active_record/connection_adapters/postgresql/oid/array.rb
@@ -34,6 +34,9 @@ module ActiveRecord
           end
 
           def type_cast_from_user(value)
+            if value.is_a?(::String)
+              value = parse_pg_array(value)
+            end
             type_cast_array(value, :type_cast_from_user)
           end