Query by enum type

[sayanb]

I am storing records and one of the fields is an Enum type

pub enum Cuisine {
    French,
    Chinese,
    Thai,
    Japanese,
    Korean,
    Indian,
    Italian,
    Mexian,
    Turkish,
    Other(String),
}

There is no problem with the insertion. However, a query

let restaurants = collection.find(doc! {
        "cuisine": cuisine,
 })?;

where cuisine is a variant of Cuisine type

produces the following compiler error:

error[E0277]: the trait bound `Bson: From<Cuisine>` is not satisfied
the trait `From<Cuisine>` is not implemented for `Bson`

Is there a way to query by an Enum variant at all, or this is currently not possible without implementing Display trait for it, then converting it to a String?

[vincentdchan]

You can check the bson spec. Looks like there is a possible way is to convert enum to number or string, it depends on you.