The Custom Filter Menu in the Grid is not working as I would expect.
I am trying to do two things
- Apply filters programmatically through the Grid State
- Populate a custom Filter Menu with values that exist in that column
I am doing something very similar to the demo for the custom filter menu: https://demos.telerik.com/blazor-ui/grid/custom-filter-menu
I have observed that if I set a filter programatically through the grid state, those filters are applied to the grid but are not being passed through the FilterMenuTemplateContext object in the FilterMenuTemplate when I open the Filter Menu for that column. Therefore, I cannot update my custom filter to show which values are currently being filtered on.
Is it by design that the FilterMenuTemplateContext does not contain Filters applied through the grid state or a bug?
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ADMIN EDIT
As of Dec 2020, there is one outstanding issue - using complex filters (having a CompositeFilterDescriptor) for the FilterRow filter template gets saved in the grid state, but is not loaded as expected - the filter row uses a "regular" FilterDescriptor and cuts off additional descriptors. Thus, the context of the template does not provide all the data from the grid state and you need to extract it manually. I have attached a sample that shows one way of doing that in the StateInit handler.
The FilterMenu already provides all the data in its context and you can bind inputs in the template directly to the filter descriptors. Once the filter row can work with more complex filter descriptors as well, you would be able to create the extra descriptors (if they are not already there) and directly bind the inputs to their value, as opposed to the current approach where view-model fields are used.
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