Traits for making extensible queries

[Brendonovich]

Traits like Where, Order etc for making wrapper functions that apply preset settings.

[tingfeng-key]

Can Query Traits be used outside the library? Or an example of using Query Traits？

For example, I have a query structure:

struct UserQuery {
  name: Option<String>,
  sex: Option<i32>,
}

If the name is not none, add the name to the where condition, and the sex is the same. Is there any way to handle to where conveniently?

[Brendonovich]

Not currently, though that's a kinda similar idea to the partial_unchecked! macro. I've got a couple of ideas but I'm not quite sure.