Which event is necessary if logic needs to be applied to check if a result is empty?

The necessary event for applying logic to check if a result is empty is the "After Fetch" event. This event occurs after data has been retrieved from a source, and it is the appropriate moment to apply logic based on the fetched data. At this stage, the application can assess the result set to determine if it contains any records or if it is empty.

Utilizing the "After Fetch" event allows developers to manipulate or implement business logic directly tied to the data retrieval process, ensuring that any actions taken (such as displaying a message or altering the UI) reflect the actual state of the data.

In contrast, the other events mentioned do not align with the requirement to check data results post-fetching. The "Ready" event is generally for initializing components or executing logic when the module is loaded, "Render" pertains to the visual aspect of displaying the UI, and "Destroy" relates to cleanup operations when a component is no longer needed. None of these address the need for checking data after it has been fetched.