Question: How to load an entity with all data and relations in the custom code?
I have a table with Entities. I’m trying to implement my custom action similar to “Excel”.
Only some basic data is showing in my table, but I have to export all data and relations.
I tried to add children collection data sources but have got “IllegalStateException: Cannot get unfetched attribute [attribute_name] from detached object.”
What is the best way to achieve this? Thanks!