Laravel ElasticSearch Builder Class

ProductBuilder.php

<?php

namespace App\Elastic\Builders;

use App\Elastic\ElasticEngine;
use App\Models\Tag;

class ProductBuilder extends ElasticEngine
{
    /**
     * @param mixed $query_string 
     * @return $this 
     */
    function queryProductName($query_string)
	{
		$query_string = strtolower(preg_replace('/^\s+|\s+$|\s+(?=\s)/', '', $query_string));
		$this->must_query->put('simple_query_string',
            [
				'query' => $query_string,
                'analyzer' => 'standard',
				'fields' => ['name_*'],
				'default_operator' => 'and'
			]
		);
		return $this;
	}  

    /**
     * @param mixed $query_string 
     * @return $this 
     */
    function queryProductFull($query_string)
	{
		$query_string = strtolower(preg_replace('/^\s+|\s+$|\s+(?=\s)/', '', $query_string));
		$this->must_query->put('simple_query_string',
            [
				'query' => $query_string,
                'analyzer' => 'standard',
				'fields' => ['name_*', 'tags'],
				'default_operator' => 'and'
			]
		);
		return $this;
	}  
	/**
	 * Create a match all tags filter
	 *
	 *
	 * @param array(int) $tags An array of tag id (integers)
	 *
	 * @return tag filter array
	 * @author
	 **/
	function filterAllTags (array $tags)
	{
		$count = count($tags);
		$this->filter->push([
			'terms_set' => [
				'tags' => [
					'terms' => $tags,
					'minimum_should_match_script' => [
						'source' => "{$count}",
					],
				]
			]
		]);
		return $this;
	}
	/**
	 * Create a match any tag filter
	 *
	 *
	 * @param array(int) $tags An array of marker id (integers)
	 *
	 * @return tag filter array
	 * @author
	 **/
	function filterAnyTag (array $tags)
	{
		$this->filter->push([
			'terms' => [
				'campaign_tags' => $tags,
			]
		]);
		return $this;
	}
	/**
	 * Create a region filter
	 *
	 *
	 * @param (string) $region A region (string)
	 *
	 * @return region filter array
	 * @author
	 **/
	function filterRegion ($region)
	{
		$this->filter->push([
			'term' => [
				'region' => $region,
			]
		]);
		return $this;
	}    
	/**
	 * @param int $size
	 * @return $this
	 */
	function aggTags($size = 10)
	{
		$this->aggregations->put('tags',
            [
                'terms' => [
                    'field' => 'tags',
                    'size' => $size,
                ]
            ]
		);

        return $this;
	}
    
    function formatTags($agg)
    {
        $buckets = $agg['buckets'];
        $return = [];
        foreach ($buckets as $bucket) {
            // look up the tag by id
            $tag = Tag::find($bucket['key']);
            // if a tag is not present then we will skip adding to the array
            if ($tag) {
                $return[] = [
                    'id' => $bucket['key'],
                    // 'tag_category' => $tag->category,
                    'tag_name' => $tag->name,
                    'count' => $bucket['doc_count']
                ];
            }
        }
        return $return;
    }
}