The desired functionality is not supported, as removing an item from the Grid's dataSource, and removing it from the actual database are two distinct operations that, in current Grid implementation, are happening in such order that the item is removed from the dataSource before it is removed from the database.
A possible approach to achieve the desired behavior would be to handle deleting of items manually, e.g. performing a custom AJAX request to delete an item, then call the dataSource.read()
method in the success callback to visually reflect the made changes in the Grid. I hope this helps.
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