How to access Text Score MongoDB $text search

Question

I was successful in running $text search using Mongoose in Node.js code. Here is the code I used:

Model.find( 
     { $text : { $search : "FindThisString"}},
     { score : {$meta : "textScore"}}
  )
 .sort({ score : { $meta : 'textScore'}})
 .exec(function(err, results) {
     _.each(results, function(item) {
        //console.log(item);
        console.log(item._id);
        console.log(item.score);
     });
});

When I console log the entire document, I can see the "score" field in on the console, but "item.score" prints as "undefined".

How can I access the score created by MongoDB in the returned results?

can you show your item? How it looks when you do `console.log(item)` — Ravi Shankar Bharti, Aug 24 '16 at 16:59
{ _id: 57bd960dd6499fef9dad4f01, cName: 'XYZ', cAddress: ' ', __v: 0, score: 1.0073315117131936, contentSection: [], ..... } — Ashu Joshi, Aug 24 '16 at 17:00
"score" is a field returned in the results. I can access all other fields of the document and process/print them - except the score. — Ashu Joshi, Aug 24 '16 at 17:03

score 5 · Answer 1 · answered Aug 26 '16 at 22:13

5

Alright I figured it out... what needs to be done as follows:

console.log(item._doc.score);

That will do the trick!

answered Aug 26 '16 at 22:13

Ashu Joshi

540
3
11

1

Thanks! Couldn't find much information regarding this. – Jeremy Kuah Sep 05 '17 at 08:00
Thank you for following up, this was driving me nuts! – toastyghost Jun 13 '18 at 17:29

score 1 · Answer 2 · answered Apr 09 '20 at 10:52

Model.find() returns a mongoose Document instead a plain Javascript object. I guess that when you try to access to the property "score", some kind of validation occurs and because you don't have it in you schema, it returns undefined.

In my opinion, the best way to get the value of item.score, is by converting the mongoose Document object into a plain Javascript object.

For that purpose you can make Model.find() to return a plain object by using the { lean: true } option (see here and here for more information):

Model.find( 
  { $text : { $search : "FindThisString"}},
  { score : {$meta : "textScore"}},
  { lean: true }
)
.sort({ score : { $meta : 'textScore'}})
.then( (result) => {
  result.forEach(item => console.log(item.score));
});

Or (in case you need the mongoose Document for other purposes) you can get the plain javascript object by using Document.prototype.toObject() method:

Model.find( 
  { $text : { $search : "FindThisString"}},
  { score : {$meta : "textScore"}}
)
.sort({ score : { $meta : 'textScore'}})
.then( (result) => {
  result.forEach(itemDocument => {
    const item = itemDocument.toObject();
    console.log(item.score);
  });
});

How to access Text Score MongoDB $text search

2 Answers2