Update multiple objects in nested array - node.js

Question

Question: Is it possible to update multiple objects in a nested array based on another field in the objects, using a single Mongoose method?
More specifically, I'm trying to update subscribed in each object of the Contact.groups array where the object's name value is included in groupNames. Solution 1 works, but it seems messy and inefficient to use both findOne() and save(). Solution 2 is close to working with just findOneAndUpdate(), but only the first eligible object in Contact.groups is updated. Am I able to update all the eligible objects using just findOneAndUpdate()?
Contact schema (trimmed down to relevant info):
{
phone: { type: String, unique: true },
groups: [
{
name: { type: String },
subscribed: { type: Boolean }
}
]
}
Variables I have at this point:
const phoneToUpdate = '1234567890' // Contact.phone to find
const groupNames = [ 'A', 'B', 'C' ] // Contacts.groups <obj>.name must be one of these
const subStatus = false // Contacts.groups <obj>.subscribed new value
Solution 1 (seems inefficient and messy):
Contact
.findOne({ phone: phoneToUpdate })
.then(contact => {
contact.groups
.filter(g => groupNames.includes(g.name))
.forEach(g => g.subscribed = subStatus)
contact
.save()
.then(c => console.log(c))
.catch(e => console.log(e))
})
.catch(e => console.log(e))
Solution 2 (only updates the first matching object):
Contact
.findOneAndUpdate(
{ phone: phoneToUpdate, 'groups.name': { $in: groupNames } },
{ $set: { 'groups.$.subscribed': subStatus } },
{ new: true }
)
.then(c => console.log(c))
.catch(error => console.log(error))
// Example Contact after the findOneAndUpdate
{
phone: '1234567890',
groups: [
{ name: 'A', subscribed: false },
{ name: 'B', subscribed: true } // Should also be false
]
}

Answer 1

You can not use $ operator since he will act as a placeholder only for the first match.
The positional $ operator acts as a placeholder for the first match of
the update query document.
What you can use is arrayFilters operator. You can modify your query like this:
Contact.findOneAndUpdate({
"phone": phoneToUpdate
},
{
"$set": {
"groups.$[elem].subscribed": subStatus
}
},
{
"arrayFilters": [
{
"elem.name": {
"$in": groupNames
}
}
]
})
Here is a working example: https://mongoplayground.net/p/sBT-aC4zW93