mongoose save or update
// This will create another document if it doesn't exist
findByIdAndUpdate(_id, { something: 'updated' }, { upsert: true });mongoose save or update
// This will create another document if it doesn't exist
findByIdAndUpdate(_id, { something: 'updated' }, { upsert: true });mongoose update subdocument by id
//this method for add data to subdocument
BlogPost.findById(req.params.postId, function (err, post) {
var subDoc = post.comments.id(req.params.commentId);
subDoc = req.body;
post.save(function (err) {
if (err) return res.status(500).send(err);
res.send(post);
});
});
// alternative second method you can use this
BlogPost.findOneAndUpdate({_id: req.params.postId}, {$push:{ subDoc: req.body }}, (err, doc) => {
// do something here
});update query in mongoose
var conditions = { name: 'bourne' }
, update = { $inc: { visits: 1 }}
Model.update(conditions, update, { multi: true }).then(updatedRows=>{
}).catch(err=>{
console.log(err)
})updating an array of object in mongoose
Person.update(
{
_id: 5,
grades: { $elemMatch: { grade: { $lte: 90 }, mean: { $gt: 80 } } }
},
{ $set: { "grades.$.std" : 6 } }
)mongoose update array in object
Person.findOneAndUpdate({_id: id},
{
"$set": {[`items.$[outer].${propertyName}`]: value}
},
{
"arrayFilters": [{ "outer.id": itemId }]
},
function(err, response) {
...
})Copyright © 2021 Codeinu
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