Querying after populate in Mongoose

Question

I\'m pretty new to Mongoose and MongoDB in general so I\'m having a difficult time figuring out if something like this is possible:

Item = new Schema({
             


        

Answer 1

After having the same problem myself recently, I've come up with the following solution:

First, find all ItemTags where tagName is either 'funny' or 'politics' and return an array of ItemTag _ids.

Then, find Items which contain all ItemTag _ids in the tags array

ItemTag
  .find({ tagName : { $in : ['funny','politics'] } })
  .lean()
  .distinct('_id')
  .exec((err, itemTagIds) => {
     if (err) { console.error(err); }
     Item.find({ tag: { $all: itemTagIds} }, (err, items) => {
        console.log(items); // Items filtered by tagName
     });
  });