loadRelationIds produces incorrect type?

Issue type:

[ ] question [x] bug report [ ] feature request [ ] documentation issue

Database system/driver:

[ ] cordova [ ] mongodb [ ] mssql [ ] mysql / mariadb [ ] oracle [x] postgres [ ] cockroachdb [ ] sqlite [ ] sqljs [ ] react-native [ ] expo

TypeORM version:

[ ] latest [ ] @next [x] 0.2.18 (or put your version here)

Steps to reproduce:

If I am using the loadRelationIds feature like this:

const orders = await manager.find(Order, {
    where: {
        // conditions
    },
    loadEagerRelations: false,
    loadRelationIds: {
        relations: [
            'customer',
        ],
    },
});

then the type of Order.customer in the orders array is still the entire Customer entity/object, while in fact it is just a string, the customer ID.

Is this expected or is this a bug? It seems that the return type of manager.find should be modified when loadRelationIds is set, and Order.customer should become a string instead of an object.

[jgladen]

I’m not sure… but I got here looking for a solution and didn’t find one… without a lot of digging (maybe this is a documentation issue).

But disableMixedMap worked for me … applied to the above example might look something like this:

const orders = await manager.find(Order, {
    where: {
        // conditions
    },
    loadEagerRelations: false,
    loadRelationIds: {
        relations: [
            'customer',
        ],
        disableMixedMap: true
    },
});

[zevektor]

As of now, one should do something like:

entity.relation as unknown as ID_TYPE[]

But I don’t think it’s ideal