I am attempting to modify an array within my collection using the following method:
var str = "list.0.arr";
db.collection('connect').update({_id: id}, {$push: { `${str}`: item}});
While the above code works perfectly fine, it throws an error Unexpected token when written like this:
db.collection('connect').update({_id: id}, {$push: { "list.0.arr": item}});
My query is, how can I make the first approach work with the object key?
When working with object literals in JavaScript, it's important to note that template literals cannot be used as keys directly. Instead, you should use a computed property for this purpose:
db.collection('connect').update({_id: id}, {$push: {[str]: item}});
// ^^^^^
For more information on using a variable for a key in a JavaScript object literal, check out this helpful resource.
Prior to performing the update operation, ensure that the string is used as a key in the update document:
let strKey = "list.0.arr",
queryObject = { "_id": uniqueId },
updateObject = { "$push": {} };
updateObject["$push"][strKey] = itemToPush;
database.collections('connect').update(queryObject, updateObject);
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