Mongodb 2 level lookup - node.js

Question

I'm a nodejs beginner and cannot debug my problem
I have 3 models.
Cargo model
const mongoose = require("mongoose");
const cargoSchema = mongoose.Schema({
description: { type: String, required: true },
cargoType: { type: String, enum:['irt', 'prt', 'adr', 'pr', 'npr', 'it', 'pt', 'izt', 'hsr', 'tpd', 'zt', 'vt', 'tpv', 'st', 'pv', 'other']},
price: { type: String, required: true },
date: { type: Date },
creator: { type: mongoose.Schema.Types.ObjectId, ref: "User", required: true }
});
module.exports = mongoose.model("Cargo", cargoSchema);
Signups model
const mongoose = require("mongoose");
const signupSchema = mongoose.Schema({
userId: { type: mongoose.Schema.Types.ObjectId, ref: "User", required: true },
cargoId: { type: mongoose.Schema.Types.ObjectId, ref: "Cargo", required: true },
truckId: { type: mongoose.Schema.Types.ObjectId, ref: "Truck", required: true },
approved: { type: Boolean ,required: true },
finished: { type: Boolean ,required: true },
});
module.exports = mongoose.model("Signup", signupSchema);
and User model
const mongoose = require("mongoose");
const uniqueValidator = require("mongoose-unique-validator");
const userSchema = mongoose.Schema({
email: { type: String, required: true, unique: true },
password: { type: String, required: true },
isEmailVerified: { type: Boolean },
registrationStep: { type: Number, enum: [0,1,2,3]},
regDate: { type: Date },
companyName: { type: String },
oib: { type: String },
telephone: { type: String },
address: { type: String },
city: { type: String },
countryCode: { type: String },
postalCode: { type: String },
userType: { type: String, enum:['firms','drivers','both']},
approved: { type: Boolean },
isAdmin: { type: Boolean }
});
userSchema.plugin(uniqueValidator);
module.exports = mongoose.model("User", userSchema);
I want to get data from Cargos for a specific user and also get data from Cargo signups and specific user for that signup
This is my controller
exports.getCargosByUserId = (req, res, next) => {
const ObjectId = mongoose.Types.ObjectId;
const cargoQuery = Cargo.aggregate([
{ $match: {creator: ObjectId(req.params.id)}},
{
$lookup: {
from: Load.collection.name,
localField: "_id",
foreignField: "cargoId",
as: "loads"
}
},
{
$lookup: {
from: UnLoad.collection.name,
localField: "_id",
foreignField: "cargoId",
as: "unLoads"
}
},
{
$lookup: {
from: Signup.collection.name,
localField: "_id",
foreignField: "cargoId",
pipeline: [{
$lookup: {
from: User.collection.name,
localField: "_id",
foreignField: "userId",
as: "signupUser"
}
}],
as: "signUps"
}
}
]);
cargoQuery
.then(documents => {
fetchedCargos = documents;
res.status(200).json({
message: "Cargo fetched successfully!",
cargos: fetchedCargos,
});
})
.catch(error => {
res.status(500).json({
message: "Fetching cargo failed!"
});
});
};
Nodejs doesn't print any error, so it's hard to debug, but somewhere I have made a mistake. I'm recieving cath block "Fetching cargo failed". Thank you for your help!

Answer 1

I cant comment you but a good help would be to print the error like this so you know more info about it:
.catch(error => {console.log(error)})