Populate.keyField ignored?

[diegogangl]

We are trying to use the keyField parameter to use _id instead of id

_id: { type: "string", primaryKey: true },

country: {
        type: "string",
        required: true,
        populate: {
          keyField: "_id",
          action: "countries.get",
        },
      },

But we are getting validation errors on countries.get saying that _id is undefined. Seems like id is hardcoded?

database/src/transform.js

Lines 186 to 190 in 3e962ec

	const params = {
	...(rule.params || {}),
	id: values,
	mapping: true,
	throwIfNotExist: false

Here's a workaround we found:

country: {
        type: "string",
        required: true,
        populate: async (ctx, values, entities, field) => {
          return Promise.all(
            entities.map(
              async (entity) =>
                (entity.postCount = await ctx.call(
                  "countries.get",
                  { _id: entity.country }
                ))
            )
          );
        },
      },

[diegogangl]

It seems that error reporting sometimes also ignores FieldKey:

{
  "name": "EntityNotFoundError",
  "message": "Entity not found",
  "code": 404,
  "type": "ENTITY_NOT_FOUND",
  "data": {
    "id": "5431"
  }
}

(this is from a DELETE, note the id instead of _id)