Full text search with weight in mongoose

full-text-search, mongodb, mongoose

Solution

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}});

Problem

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.collection.ensureIndex( // Fields to index { animal: "text", color: "text", pattern: "text", size: "text" }, // Options { name: "best_match_index", // Adjust field weights (default is 1) weights: { animal: 5, // Most relevant search field size: 4 // Also relevant } } ) ``` Can I do it with pure mongoose? Or I have to use some plugin like mongoose-text-search? How about without weight? And how should I do it?

Original source