Why this happens? The default is to return the original, unaltered document. If you want the new, updated document to be returned you have to pass an additional argument: an object with the new property set to true. From the mongoose docs: Query#findOneAndUpdate Model.findOneAndUpdate(conditions, update, options, (error, doc) => { // error: any errors that … Read more
From here: The versionKey is a property set on each document when first created by Mongoose. This keys value contains the internal revision of the document. The name of this document property is configurable. The default is __v. If this conflicts with your application you can configure as such: new Schema({..}, { versionKey: ‘_somethingElse’ })
Mongoose now supports this natively with findOneAndUpdate (calls MongoDB findAndModify). The upsert = true option creates the object if it doesn’t exist. defaults to false. var query = {‘username’: req.user.username}; req.newData.username = req.user.username; MyModel.findOneAndUpdate(query, req.newData, {upsert: true}, function(err, doc) { if (err) return res.send(500, {error: err}); return res.send(‘Succesfully saved.’); }); In older versions Mongoose does … Read more
As favouriteFoods is a simple array of strings, you can just query that field directly: PersonModel.find({ favouriteFoods: “sushi” }, …); // favouriteFoods contains “sushi” But I’d also recommend making the string array explicit in your schema: person = { name : String, favouriteFoods : [String] } The relevant documentation can be found here: https://docs.mongodb.com/manual/tutorial/query-arrays/
If you also have documents that don’t have the key, you can use: ME.find({ pictures: { $exists: true, $not: {$size: 0} } }) MongoDB doesn’t use indexes if $size is involved, so here is a better solution: ME.find({ pictures: { $exists: true, $ne: [] } }) If your property can have invalid values (like null … Read more