Calling method via reflection on parent asset inside PropertyDrawer

Questions & Answers
1

Im trying to make a PropertyDrawer that will call a method on the object when a field is set. I got it working for objects that are in the scene, but it wont work for assets (or at least not ScriptableObjects)

Here is the full code:

[CustomPropertyDrawer(typeof(CallbackAttribute))]
public class CallbackDrawer : PropertyDrawer
{
    public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)
    {
        EditorGUI.BeginProperty(position, label, property);
        EditorGUI.BeginChangeCheck();
        var result = EditorGUI.ObjectField(position, label, property.objectReferenceValue, fieldInfo.FieldType, false);
        if (EditorGUI.EndChangeCheck())
        {
            property.objectReferenceValue = result;
            var method = property.serializedObject.targetObject.GetType().GetMethod((attribute as CallbackAttribute).MethodName, BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance);
            object obj = property.serializedObject.targetObject;
            method.Invoke(obj, null);
        }
        EditorGUI.EndProperty();
    }
}

Inside the method that is called the field will not be set. I tried loading the asset manually via the AssetDatabase, but that didn’t work either. Is this a bug?

2

So the solution is to wait a few frames before calling the method. I did this by making a static class and marking it with [InitializeOnLoad] and registering for updates.
Then i use this class to hold a queue of callbacks that it will wait a few frames before calling