Accompanying alt text for multiple file uploads

[dvodvo]

While carrierwave allows the uploading of mutiple files using a JSON data type (postgresql and mysql), AFAIK the rails file_field does not have an accessor in order to set the alt attribute for the tag in order to support accessibility.

With a json column, it would make sense to create a has with the image data and atl_text as distinct elements.

Is there any way to achieve this?