Ever wondered how to define your own Data Validation rules with Editor Utility Blueprints? Here's an example to validate that material asset names are prefixed with "M_".
@UnrealEngine #UE4 #GameDev #Tutorial
@UnrealEngine #UE4 #GameDev #Tutorial
1. Enable the Data Validation plugin and restart the editor.
2. Add bAllowBlueprintValidators=true to DefaultEditor.ini
(And optionally enable validate on save and cook by setting to true)
(And optionally enable validate on save and cook by setting to true)
3. Create an Editor Utility Blueprint of type EditorValidatorBase, call it something meaningful like MaterialValidator
4. Open the validator blueprint, override the "Can Validate Asset", add in a Material pure cast just to return if the asset is a material.
5. Override Validate Loaded Asset, check if the object name starts with "M_". If it does, pass the asset; otherwise, fail with a meaningful message
6. Restart the editor. This is important, as validators only get registered on editor start.
7. Finally, find a material to validate (Note: Material Instances are of a different asset type), right click it then go to Asset Actions->Validate Assets. This will run your validator and return the result in the message log.
Additionally, enabling validate on save and cook will then ensure that newly created assets (and older ones) won't slip through the cracks.
Editor Utility Blueprints are a powerful addition to Unreal, and I can't wait to see what you all come up with! 😁
Editor Utility Blueprints are a powerful addition to Unreal, and I can't wait to see what you all come up with! 😁
