Add a field to existing MongoDB document (with Mongoose in Node.js)
try
Article.update( {link: 'http://www.atlantico.fr/example.html'}, {day : 'example' }, {multi:true}, function(err, numberAffected){ });and don't forget to add day to schema.
await Users.updateOne( {link: 'http://www.atlantico.fr/example.html'},{ $set: { day : 'example'} }, { multi: true });- update is deprecated
- use await for db operation
- if you want to add new filed in collection ,first check it is added in Model or not(if you don't wan't use that filed as mandatory make is as "required: false")
Article.findByIdAndUpdate(id, { $set: { day: 'example' }}, { new: true }, function (err, article) { if (err) return handleError(err); res.send(article);});I prefer this way because it's contains a callback function.
reference and more info: http://mongoosejs.com/docs/documents.html