How to Prevent Infinite Loop When Customizing Property Panel for Nested DataTable Structures in Unreal Engine

Development Programming & Scripting
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How to Prevent Infinite Loop When Customizing Property Panel for Nested DataTable Structures in Unreal Engine

I’m using IPropertyTypeCustomization to create a custom property panel for the FGameTableDataDetialView struct:

struct FGameTableDataDetialView
{
    FString TableId;
    TSoftObjectPtr<UDataTable> DataTableObject;
}

The functionality of this custom panel is: when DataTableObject has a value, it creates a structure details view using FPropertyEditorModule::CreateStructureDetailView() to display the contents of the DataTable.

However, when the struct inside DataTableObject also contains a FGameTableDataDetialView field with a value, this easily creates an infinite loop of structure creation, eventually causing the editor to crash.

What I need help with:
Is there any way to detect or retrieve the nesting level within either:

  1. The CustomizeChildren method of IPropertyTypeCustomization, OR
  2. During the CreateStructureDetailView call

I’m looking for approaches to:

  • Track how many levels of nesting have occurred
  • Potentially set a maximum nesting depth limit
  • Detect circular references before they cause infinite loops
  • Access parent hierarchy information from within the property customization

Any suggestions or best practices for handling this kind of recursive structure display in Unreal’s property system would be greatly appreciated.