Full text search with weight in mongoose

Question

As I find out, since version 3.8.9, mongoose support full text search. But I can\'t find a good documentation for it!
I want to do something like:

db.col         


        

Answer 1

Yes, you can use full text search in Mongoose >= 3.8.9. Firstly, a collection can have at most one text index (see docs). So, to define text index for several fields, you need compound index:

schema.index({ animal: 'text', color: 'text', pattern: 'text', size: 'text' });

Now you can use $text query operator like this:

Model
    .find(
        { $text : { $search : "text to look for" } }, 
        { score : { $meta: "textScore" } }
    )
    .sort({ score : { $meta : 'textScore' } })
    .exec(function(err, results) {
        // callback
    });

This will also sort results by relevance score.

As for weights, you can try to pass weights options object to index() method (where you define compound index) (working at least with v4.0.1 of mongoose):

schema.index({ animal: 'text', color: 'text', pattern: 'text', size: 'text' }, {name: 'My text index', weights: {animal: 10, color: 4, pattern: 2, size: 1}});