Model.remove fails in getting documents unindexed

[jeremythille]

Using Mongoose's method Model.remove() effectively removes the documents from Mongo, but they remain indexed in Elastic's base.

Ad.remove({
  $where: "this.site.length > 0"
}).exec(function(err, docs) {
     if(err) throw err;
     console.log(docs); // undefined!
});

Many documents are removed from Mongo, but they remain in Elastic.

My guess is that Mexp needs the returned documents in order to update them in ES, but the problem is that the remove() method does not return these documents. Its signature is only err.

Workaround
We can make a 2-step delete, with (1) a find() query and (2) delete the returned documents one by one. findOneAndRemove() returns the deleted document, so it can be unindexed.

[jbdemonte]

Yes, mexp only handle document's handlers, not model ones