Push a sub-subdocument on a Mongoose Schema [duplicate] - mongodb

Question

This question already has answers here:
Mongodb $push in nested array
(4 answers)
Closed 3 years ago.
Consider these 3 schemas and hierarchy: A Project has multiple Stages, a Stage has multiple Events.
For pushing a new Stage into a Project, I do this:
Project.findOneAndUpdate(
{ slug: projectSlug },
{ $push: { stages: myNewStage } },
).then((post) => res.status(201).json({
message: 'stage created successfully',
data: post,
})).catch((error) => {
return res.status(500).json({
code: 'SERVER_ERROR',
description: 'something went wrong, Please try again',
});
});
But, how can I push a new event into a Stage? As far as I've seen, a subdocument does not have the same properties as a document (such as find, findAndUpdate).
My actual schemas:
PROJECT SCHEMA
const mongoose = require('mongoose');
const Stage = require('./Stages').model('Stages').schema;
const projectSchema = new mongoose.Schema({
name: {
type: String,
required: true,
},
description: {
type: String,
},
slug: {
type: String,
trim: true,
required: true,
lowercase: true,
unique: true,
},
clientSlug: {
type: String,
trim: true,
required: true,
lowercase: true,
},
stages: [Stage],
startDate: {
type: Date,
trim: true,
required: true,
},
endDate: {
type: Date,
trim: true,
required: false,
},
},
{
timestamps: true,
});
module.exports = mongoose.model('Projects', projectSchema);
STAGE SCHEMA
const mongoose = require('mongoose');
const Event = require('./Events').model('Events').schema;
const stageSchema = new mongoose.Schema({
name: {
type: String,
required: true,
},
description: {
type: String,
},
slug: {
type: String,
trim: true,
required: true,
lowercase: true,
unique: true,
},
clientSlug: {
type: String,
trim: true,
required: true,
lowercase: true,
},
projectSlug: {
type: String,
trim: true,
required: true,
lowercase: true,
},
events: [Event],
},
{
timestamps: true,
});
module.exports = mongoose.model('Stages', stageSchema);
EVENT SCHEMA
const mongoose = require('mongoose');
const Comment = require('./Comments').model('Comments').schema;
const eventSchema = new mongoose.Schema({
_id: {
type: String,
trim: true,
lowercase: true,
},
userEmail: {
type: String,
trim: true,
required: true,
lowercase: true,
},
text: {
type: String,
},
imgUrl: {
type: String,
},
documentUrl: {
type: String,
},
stageSlug: {
type: String,
trim: true,
required: true,
lowercase: true,
},
clientSlug: {
type: String,
trim: true,
required: true,
lowercase: true,
},
projectSlug: {
type: String,
trim: true,
required: true,
lowercase: true,
},
comments: [Comment],
},
{
timestamps: true,
});
module.exports = mongoose.model('Events', eventSchema);

Answer 1

To push a new event into your stages array given that you have the projectSlug and stageSlug, you can do this:
Project.findOneAndUpdate(
{
$and: [
{ slug: projectSlug },
{ 'stages.slug': stageSlug },
]
},
{
$push: { 'stages.$.events': newEvent }
}
)
.then(() => {})
.catch(() => {});