Weight fields

[hiasl]

Hi, short question: is it possible to give different fields a different weight for the search score? second question: can a certain result be boosted with a factor? thanks, Matthias

[juban]

Hi Matthias,

Yes, absolutely!

Based on current Elasticsearch documentation here, if you want to boost let's say the title field, you could add something like the following code in a module of your application to alter the default index mapping created by the plugin:

Event::on(ElasticsearchRecord::class, ElasticsearchRecord::EVENT_BEFORE_CREATE_INDEX, function (Event $event) {
    /** @var ElasticsearchRecord $esRecord */
    $esRecord = $event->sender;
    $schema = $esRecord->getSchema();
    $schema['mappings']['elasticsearch-record']['properties']['title']['boost'] = 2;
    $esRecord->setSchema($schema);
});

If you want to set something like that on a custom additional field of yours, you could simply define that in the elasticsearch.php configuration file (see) like the following:

return [
    'extraFields'            => [
        // add your additional field(s)
        'somefield'     => [
            // Define the mapping definition you need for your field
            'mapping' => [
                'type' => 'keyword',
                'boost' => 2, // Whatever boost value that suits
            ],
            'value'   => function (\craft\base\ElementInterface $element, \lhs\elasticsearch\records\ElasticsearchRecord $esRecord) {
               return 'Some value'; // Obviously useless, but you get the idea
            }
        ]
    ]
];

If you want to do that on a query level, you could alter the query directive (see lhs\elasticsearch\record\ElasticsearchRecord::EVENT_BEFORE_SEARCH) to implement a boosting query as described here

I hope I could answer your questions and thank you for your interest in our plugin.

Alban.

[juban]

Ho @hiasl,

Did you managed to achieve what you want? Please, let us know.

[hiasl]

Hey @juban ,

thanks for asking: to be honest, we did not try yet. I needed the information for a quotation where we also offered your extension as part of the service. So let's hope we get the contract, then I will let you know :-)

all the best, Matthias

[juban]

Excellent! Let us know if you need further assistance. Thanks.