I have this schema for my user
const userSchema = mongoose.Schema({
firstName: {
type: String,
},
notifications : [{
description: String,
status: {
type: String,
enum : ['read', 'unread'],
default: 'unread'
},
dateAdded:{
type: Date,
default: Date.now
}
}],
})
supposedly I want to find the user _id first then insert a new object inside the new notification array. and it should look like this
{
_id: ObjectId('123')
firstName: 'John Doe'
notifications:[
{
description: 'somedescription'
status: 'unread'
},
{
description: 'somedescription2'
status: 'unread'
}
]
}
How can I achieve this, assuming that the notification property is non existent in the user document first, i need to check if notification property is present else add the notification property and push the new object
User.updateOne(
{ _id: userId },
{ $push: { notifications: {description: 'new notifications'} } }
)
this code is not working for me
Use $addToSet operator to achieve that
User.updateOne(
{ _id: userId },
{ $addToSet: { notifications: {description: 'new notifications'} } }
)
If that doesn't work try to add the default value too, and then that must work
User.updateOne(
{ _id: userId },
{ $addToSet: { notifications: {description: 'new notifications',
'status': 'unread'} } }
)