Having some doubts about the created index and internal behaviour

Hi, I just installed your plugin and making some unit testing with my use case I have some troubles. Let’s say I have the next basic schema:

const articleSchema = new mongoose.Schema({
  title: {
    en: String,
    es: String,
  }
 // ... 
 otherProp: Boolean
}):

I want the fuzzy search to be in the two nested keys of the title, so I use the plugin according to your api:

articleSchema.plugin(fuzzySearch, {
  fields: [
    {
      name: 'title',
      keys: ['en', 'es'],
      minSize: 3
    }
  ]
});

Let’s say i create the next document with title:

await new Article ({
  title: {
    en: 'This is an article title in english',
    es: 'A title that is supposed to be in spanish'
  }
},
// ...
).save();

After I check the database the n-grams are generated correctly and exist in the database.

 title_fuzzy: [
    {
      en_fuzzy: [
        'his',
        'thi',
        'this',
        'is',
        'an',
        'cle',
        'icl',
        'tic',
        'rti',
// ...
     ]

All cool, BUT when I did my testing, for example with the string ‘cle’ which is part of the n-grams array I have no results, not even when using more words, included in the n-gram array like: ‘arti’ or ‘artic’. The only way I get results is by writing the whole word ‘article’ which afaik is the default behaviour of the native mongodb text search.

While doing more debugging I printed the generated indexes and with surprise I saw that the text index is in the original field, this is the index object I get back:

{
    v: 2,
    key: { _fts: 'text', _ftsx: 1 },
    name: 'title.es_text_title.en_text',
    ns: 'LocalTest.articles',
    background: true,
    weights: { 'title.en': 1, 'title.es': 1 },
    default_language: 'english',
    language_override: 'language',
    textIndexVersion: 3
  }

Am I doing something wrong? Or why the index is not pointed to the generated n-gram arrays? If not, what’s happening?

Also, is there any way to override the default language? In the docs, mongo can work with different languages.

Thank you in advance.

[adrien-prototype]

@VassilisPallas thank you very much.

I guess I was blindfolded by going back and forth on that error. This was actually coming from a “language” field of type Array that I had on my model, which is a reserved word for mongoDB. The error wasn’t very explicit but this was the cause.

I’m sorry that I reported it here and thank you again for the great work 💪🏽 All the best.

[VassilisPallas]

First of all, you don’t need to create the indices by yourself, which mean you can remove these lines:

CoachingSchema.index({
	"coachUserName_fuzzy": "text",
	"sport_fuzzy": "text",
	"title_fuzzy": "text"
})

and

UserSchema.index({
	"userName_fuzzy": "text",
	"firstName_fuzzy": "text",
	"lastName_fuzzy": "text"
})

Now the problem can be anything. Did you try to delete the indices and let the plugin to create them?