CODEWITHSUNDEEP
javascriptnode.jsmongodbexpressmongoose
Joseph T F
Joseph T F

Reputation: 801

Find the document and insert value into array in MongoDB using Node.JS Mongoose

I have a mongodb collection called 'favorite' The schema for that collection is as follows:

    var favoritesSchema = new Schema({

     postedBy: {
            type: mongoose.Schema.Types.ObjectId,
            ref: 'User'
              },
     dishes:[
             {
             type: mongoose.Schema.Types.ObjectId,
             ref: 'Dish'
             }
             ]
     },

     {timestamps:true}
     );

      var favoritesModel = mongoose.model('Favorite',favoritesSchema);

Now what I need is to find the exact document having a specific postedBy and need to insert value to the array field dishes. My code is as given below

 Favorites.find({ postedBy : req.decoded._doc._id },function(err,favorite){
       favorite.dishes.push(req.body._id);
       favorite.save(function(err,favorite)
       {
         if(err) throw err;
         console.log('favorite updated');
         res.json(favorite);
       });
     }
   });

However this is failing with TypeError: Cannot read property 'push' of undefined. Please help.

Upvotes: 2

Views: 1660

Answers (1)

JohnnyHK
JohnnyHK

Reputation: 311855

favorite is an array of favorite documents because you're using find. You want to use findOne here instead so that favorite is the single doc you're looking to update.

Favorites.findOne({ postedBy : req.decoded._doc._id }, function(err,favorite){
    favorite.dishes.push(req.body._id);
    favorite.save(function(err,favorite) { ...

Upvotes: 2

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