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Search a value in an object with number keys with MongoDB
To search a value, simply use $where in MongoDB. Let us create a collection with documents −
> db.demo268.insertOne( ... { ... "details" : { ... "101" : "John", ... "1001" : "Bob" ... } ... } ...); { "acknowledged" : true, "insertedId" : ObjectId("5e4816141627c0c63e7dbaaf") }
Display all documents from a collection with the help of find() method −
> db.demo268.find();
This will produce the following output −
{ "_id" : ObjectId("5e4816141627c0c63e7dbaaf"), "details" : { "101" : "John", "1001" : "Bob" } }
Following is the query to search a value in an object with number keys −
> db.demo268.find({ $where: ... function() { ... for (var k in this.details) { ... if (this.details[k] == "Bob") { ... return true; ... } ... } ... } ...})
This will produce the following output −
{ "_id" : ObjectId("5e4816141627c0c63e7dbaaf"), "details" : { "101" : "John", "1001" : "Bob" } }
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