Add a field to existing MongoDB document (with Mongoose in Node.js)

Question

I have this existing document in a collection Article in MongoDB database:

[ { site: 'www.atlantico.fr',
date: '2014-05-27T11:10:19.000Z',
link: 'http://www.atlantico.fr/example.html',
_id: 538473817eb00f082f4803fc,
__v: 0} ]

I want to add a new field day with value 'example' to this document, using Mongoose in Node.js. So I do:

Article.update(
      { link: 'http://www.atlantico.fr/example.html'}, 
      { $set : {day : 'example'} }, 
       function(err){  
                    });

But it does not work because when I query the document after that, no new field day appears...

I must have made a mistake when using update or $set in Mongoose, but I cannot find exactly my mistake.

What am I missing? Thanks!

At the beginning I did not have day field in the schema and in the model. — GBC
– GBC, Commented May 30, 2014 at 20:14

Mangesh · Accepted Answer · 2015-12-26 00:59:48Z

17

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.

edited Dec 26, 2015 at 0:59

Mangesh

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answered May 30, 2014 at 16:42

Sergey Zhukov

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1 Comment

lowcrawler Over a year ago

the reminder to get it in the schema was particularly useful.

Bhagvat Lande · Accepted Answer · 2018-09-06 12:48:59Z

4

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")

answered Sep 6, 2018 at 12:48

Bhagvat Lande

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Comments

Abdulaziz Noor · Accepted Answer · 2016-11-27 07:56:24Z

0

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

answered Nov 27, 2016 at 7:56

Abdulaziz Noor

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