laravel - 如何使用 Laravel Scout 和 ElasticSearch 设置提升和过滤器？

Question

我正在构建与 Laravel Scout 和 Elasticsearch 的搜索集成。我正在尝试弄清楚如何改进我的提升查询。

是否可以使用 Laravel Scout 执行此操作，或者我是否需要恢复为直接使用 ElasticSearch PHP 库？

Answer 1

实际上，它可以通过自定义 Scout Engine 轻松完成。

例如，我们称它为 ElasticqueryEngine，并从默认的 ElasticsearchEngine 扩展它:

<?php

namespace App\Libs\Scout\Engines;

use Laravel\Scout\Builder;
use Laravel\Scout\Engines\ElasticsearchEngine;

class ElasticqueryEngine extends ElasticsearchEngine
{
    /**
     * Perform the given search on the engine.
     *
     * @param  Builder  $query
     * @param  array  $options
     * @return mixed
     */
    protected function performSearch(Builder $query, array $options = [])
    {
        if (!is_array($query->query)) {
            return parent::performSearch($query, $options);
        }

        $searchQuery = [
            'index' => $this->index,
            'type' => $query->model->searchableAs(),
            'body' => [
                'query' => $query->query,
            ],
        ];

        if (array_key_exists('size', $options)) {
            $searchQuery = array_merge($searchQuery, [
                'size' => $options['size'],
            ]);
        }
        if (array_key_exists('from', $options)) {
            $searchQuery = array_merge($searchQuery, [
                'from' => $options['from'],
            ]);
        }
        return $this->elasticsearch->search($searchQuery);
    }
}

添加新的服务提供商以注册新的 ElasticqueryEngine(或在任何现有服务提供商中注册):

<?php

namespace App\Providers;

use Laravel\Scout\EngineManager;
use Illuminate\Support\ServiceProvider;
use Elasticsearch\ClientBuilder as Elasticsearch;
use App\Libs\Scout\Engines\ElasticqueryEngine;

class ElasticqueryServiceProvider extends ServiceProvider
{
    /**
     * Perform post-registration booting of services.
     *
     * @return void
     */
    public function boot()
    {
        resolve(EngineManager::class)->extend('elasticquery', function () {
            return new ElasticqueryEngine(
                Elasticsearch::fromConfig(config('scout.elasticsearch.config')),
                config('scout.elasticsearch.index')
            );
        });
    }

    /**
     * Register bindings in the container.
     *
     * @return void
     */
    public function register()
    {
        //
    }
}

不要忘记在 config/app.php 中添加新的服务提供者:

'providers' => [
    // ...
    Laravel\Scout\ScoutServiceProvider::class,
    App\Providers\ElasticqueryServiceProvider::class,
],

并在 config/scout.php 或 .env (SCOUT_DRIVER=elasticquery) 中将驱动更改为“elasticquery”

毕竟，您可以通过 https://www.elastic.co/guide/en/elasticsearch/reference/current/full-text-queries.html 中的任何查询进行搜索:

$query = [
    'simple_query_string' => [
        'query' => 'findme',
        'fields' => [
            'title^5',
            'description',
        ],
    ],
];
$posts = Posts::search($query)->get();

// also you can use default ElasticsearchEngine query
$posts = Posts::search('findme')->where('user_id', 1)->get();