mongoose Single array in update if not exist

Question

model
state: [ {
        type: String,
        require: true
    }]

states = ['Gujarat','Rajasthan'];
state.findOneAndupdate({'_id':id},{state:states});

how can I update if exist override;

i want store in model is

states:['Gujarat','Rajstan','Amreli']

Please add some details to your question.

smtaha512
– smtaha512

2020-04-11 15:49:25 +00:00
Commented Apr 11, 2020 at 15:49 — smtaha512
– smtaha512, Commented Apr 11, 2020 at 15:49
add some model detail please answer me

Balkrushn
– Balkrushn

2020-04-11 15:57:01 +00:00
Commented Apr 11, 2020 at 15:57 — Balkrushn
– Balkrushn, Commented Apr 11, 2020 at 15:57

ambianBeing · Accepted Answer · 2020-04-11 15:57:43Z

1

An array field update (uniquely) in mongodb can be achieved using $addToSet with $each modifier:

Query:

let states = ["Gujarat", "Rajasthan"];

db.state.update({ _id: id }, { $addToSet: { state: { $each: states } } });

answered Apr 11, 2020 at 15:57

ambianBeing

3,5492 gold badges17 silver badges28 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Balkrushn Over a year ago

Thanks, you save my time. contact no 9033325096 whatsapp

Collectives™ on Stack Overflow

mongoose Single array in update if not exist

1 Answer 1

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related