How to add data to mongoDB array?

Question

Below is my code to add reviews to my reviews array in the restaurant object

async created (restaurantId, title, reviewer, rating, dateOfReview, review) {
    
    const restaurantsCollection = await restaurants();
    let newReview = {
      restaurantId : restaurantId,
      title : title,
      reviewer : reviewer,
      rating : rating,
      dateOfReview : dateOfReview,
      review : review
    };

    const restaurant = await restaurantsCollection.findOne({ _id: restaurantId });
    restaurant.reviews.push(newReview);

}

This does not add any data to the DB, what is the right way to do this?

Mj Ebrahimzadeh · Accepted Answer · 2021-10-22 19:59:59Z

1

If I have understand right, you need to call the update after pushing that to your reviews.

await restaurantsCollection.updateOne({restaurantId : newReview.restaurantId},{ $set: {reviews: restaurant.reviews} }

or you can easily push it like this and no need to do the findOne query:

 await restaurantsCollection.updateOne({restaurantId : newReview.restaurantId},{ $push: {reviews: newReview.review} }

edited Oct 22, 2021 at 19:59

answered Oct 22, 2021 at 19:54

Mj Ebrahimzadeh

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1 Comment

Swayam Shah Over a year ago

thank you, I didn't know about the $push

Hussein Mohamed · Accepted Answer · 2021-10-22 21:03:31Z

1

Don't forget to save the review after pushing it to the array.

await restaurant.save()

answered Oct 22, 2021 at 21:03

Hussein Mohamed

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