Using GetPrimaryAssetDataList to return a list of primary data assets

Development Programming & Scripting C++
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1

I’m trying to load all data assets of a certain type using GetPrimaryAssetDataList, but I just can’t get it to work.

  • I have a test blueprint class named “MenuItem” inheriting primary data class.
  • I have three test data assets: MenuItem_1, Menuitem_2 and MenuItem_3
  • In Primary Asset Types to Scan, I added a section named “MenuItem”, with Asset Base Class set to my MenuItem class.
  • Has Blueprint Classes is not checked (since I’m looking for data assets, not blueprint subclasses).
  • The directory is set to /Game/TestMenu, I have double checked 1000 times to make sure the data assets are in the correct location.

Here is the code that is failing:

TArray<FAssetData> Assets;
UAssetManager::Get().GetPrimaryAssetDataList(PrimaryAssetType, Assets);

When I try to load something else, like a list of blueprint subclasses, it does work, so the issue is definitely with the specific type, and not with where the asset manager is referenced.

Why won’t this work with primary data assets though? Am I missing a step? I also tried with a class created in C++ instead of Blueprint, but that didn’t work either.

2

What is that PrimaryAssetType variable set to? Have you overwritten GetPrimaryAssetID? I don’t think the default implementation of that function works for blueprint base classes (but it should have worked with your C++ base class though).

3

The PrimaryAssetType is “MenuItem”, I know that’s not the problem because it works when I change it to look for blueprint subclasses instead.

My temporary solution to the problem I’m having is to use GetAssetsByClass. As long as the directory and type is defined somewhere in Primary Assets to Scan, it forces them to load on startup.