Getting all objects from array with specific property in Mongoose

Question

If i have this schema

food = {
    name : String,
    favouriteFoods : []
}

and each favoritefood element is an object like so

var favoritefood = new Object;
favoritefood.cuisine = 'indian';
favoritefood.flavor = 'spicy';

is it possible to query mongoose to get all favoritefood objects have their flavor attribute set to 'spicy'?

Answer 1

You need to perform an aggregate operation to get all the spicy favouirite foods grouped by name.

• Match all the food items, having at least one spicy favorite food.
• Unwind the favorite food array.
• Match all the unwinded favorite foods which are spicy.
• Group by the food name.
• Project them.

The Code:

Food.aggregate([
{$match:{"favouriteFoods.flavor":"spicy"}},
{$unwind:"$favouriteFoods"},
{$match:{"favouriteFoods.flavor":"spicy"}},
{$group:{"_id":"$name","spicyFoods":{$push:"$favouriteFoods"}},
{$project:{"_id":0,"name":"$_id","spicyFoods":1}}
],function(err,res){
// console.log(res);
})