There are occasions when the out-of-the-box filter operators can't be used, such as filtering on nested objects. In these situations I use a custom function for the filter operator.

It would be great if the Filter widget could support custom filter operators.

I realise this would be challenging, as it would break the save/load state function and would be difficult to handle in the expressionPreview.

Hi Team,

When a date filter is applied in the new Filter widget, the preview looks like: "Date Is After 'Tue Jan 01 2019 00:00:00 GMT+0000 (Greenwich Mean Time)'" -- I'd like to be able to customize the displayed date format, something like adding "format:"{0:dd/MM/yyyy}" to the 'fields' object.

Thanks