$lookup work in MongoDB but doenst work with mongoose - mongodb

Question

I have two Documents:
Category = new Schema({
storeKey: { type: String, required: true },
cod: { type: String, required: true },
name: { type: String, required: true },
visible: { type: Boolean }
},
{
timestamps: {
createdAt: "created",
updatedAt: "updated"
}
}
);
and:
Product = new Schema({
name: { type: String, required: true },
cod: String,
storeKey: { type: String, required: true },
categoryId: String,
description: { type: String, required: true },
price: { type: Number, required: true },
stockQuantity: { type: Number, required: true },
avatar: String,
visible: Boolean
}, {
timestamps: true
});
Query on server whith mongoose to locate products with the aggregate category
Product.aggregate([
{
$lookup: {
from: "Category",
localField: "categoryId",
foreignField: "_id",
as: "category"
}
}]
).exec((error, done) => {
if (error) res.status(500).send({
message: langs[req.query.lang],
error
});
res.status(200).send(done);
});
query on local terminal
db.Product.aggregate(
[{
$lookup: {
localField: "categoryId",
from: "Category",
foreignField: "_id",
as: "category"
}
}])
In the terminal, $lookup works correctly. With mongoose, it brings duplicate records and does not bring existing categories. What is wrong?

Answer 1

#Anthony Winzlet was correct, should be categories (in the pural) would have to leave categories (in the pural) and not category, but also, i had not defined the categoryId field as being an ObjectId in the Product Schema, so it was comparing string with ObjectId. In the tests in the terminal I had saved the server return, which returns the _id fields as strings. Now it's working.Thanks!
const ProductSchema = new Schema({
name: { type: String, required: true },
cod: String,
storeKey: { type: String, required: true },
categoryId: { type: Schema.Types.ObjectId, ref: 'categories' },
description: { type: String, required: true },
price: { type: Number, required: true },
stockQuantity: { type: Number, required: true },
avatar: String,
visible: Boolean
}, {
timestamps: true
});