node.js - MongoDB: query result match any value in array

Question

I have some documents :

{

    "storeID" : "715R",
    "sensorID" : [ 
        "0BBA", 
        "0BB9"
    ]
}
{

    "storeID" : "312R",
    "sensorID" : [  
        "0BBB"
    ]
}

I want to get result of sensorID which sotreID match any value in storeIDarray like ['715R','312R','789R']

in this case I want get result : a sensorID array : [ "0BBA", "0BB9","0BBB"]

what should I do? thanks.

Answer 1

You should take a look at the $in operator in MongoDB. Use it with a find, then, to make your request faster, you can use the lean method : with it, mongoDB will return JS objects and not Mongoose model/objects.

YourModel.find({storeID: {$in: storeIDarray }}).lean().exec(yourCallback);

Then, you can use the reduce method on the resulting array :

yourResult.reduce((acc, el) => acc.concat(el.sensorID), []);

Hope it helps,
Best regards