<https://coderwall.com/p/ykpxkg/columns-for-serialized-attributes-in-rails-models-need-to-be-type-text>
<http://schema.org/articleBody>
"If you used a serialized column in your model, that column must be of type :text rather than :string"
<https://coderwall.com/p/ykpxkg/columns-for-serialized-attributes-in-rails-models-need-to-be-type-text>