I'm starting to learn about mongoose/MongoDB aggregation functions, and am having some basic difficulties. For example, I'm trying to do the following:
var myModels= require('./models/myModel');
var myCount = myModels.countDocuments({userID: "A"});
console.log(myCount );
I just want to count the number of documents with userID of "A" but when this prints to the console, it's printing as a whole object, instead of just a numerical count. I've read the answer here but I'm still not able to solve this problem (also, is there a way, unlike in that question, to return the count directly rather than having to predefine a variable and set it in a callback function?)
I'm trying to follow the guide here and don't see where I'm going wrong.
It's because the return value of countDocuments is a promise and not a number.
You either need to wait for that Promise or use callback syntax like so:
var myModels= require('./models/myModel');
// this required the code to be inside an async function
var myCount = await myModels.countDocuments({userID: "A"});
console.log(myCount);
Or:
var myModels= require('./models/myModel');
myModels.countDocuments({userID: "A"})
.then((myCount) =>{console.log(myCount);});
Thank you, I'm trying this. For the second example, I'm getting an error that await is not valid - that should still include "await" right?
No thats mb, i forgot to edit it out.