One can define custom field formatters using the df_acf_formatter_callbacks filter. This filter takes an array array as an argument. Each array item is a key, value pair consisting of callback name and callback function (anonymous function)
A sample implementation below
In the above code, we register a filter called registeracfformatters which defines a custom field formatter called my-post-content which returns the post_content on the current single post item.
Divi Custom Post BuilderAssociate a Divi Library Item to a Custom Post Type's Single Page Template. Make fully use of Divi Page Builder to design you single page. Supply custom data to the divi template using field formatters and add_filter. Pre-baked field formatters for ACF Field provided. Customizer settings for selecting templates for custom post types available.