append to array mongoose updateone
/*Another way to push items into array using Mongoose is-
$addToSet, if you want only unique items to be pushed into
array. $push operator simply adds the object to array whether
or not the object is already present, while $addToSet does that
only if the object is not present in the array so as not to
incorporate duplicacy.*/
PersonModel.update(
{ _id: person._id },
{ $addToSet: { friends: friend } }
);mongoose update array push multiple
Kitten.update(
{ name: 'fluffy'},
{
$push: {
values: {
$each: [2, 3]
}
}
}
)
.then(result => {
console.log(result)
})
.catch(err => {
console.error(err)
})Copyright © 2021 Codeinu
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