php elasticsearch 联想搜索类目

## 创建索引和字段
```php
$params = [
            'index' => 'category',
            'body' => [
                "mappings" => [
                    'properties' => [
                        "id" => ["type" => "integer"],
                        "parent_id" => ["type" => "integer"],
                        "level" => ["type" => "integer"],
                        "name" =>  ["type" => "text", "analyzer" => "ik_max_word"],
                        "disable_flag" => ["type" => "integer"],
                        'children' => [
                            'type' => "nested",
                            "properties" => [
                                "id" => ["type" => "integer",'copy_to' => 'children_id'],
                            ]
                        ]
                    ]
                ]
            ]
        ];
        $info = app('es')->indices()->create($params);

    /**
     * @Author: 荷逸
     * @Description 联想搜索
     * @DateTime 2022-05-20
     */
    public function autocompleteSearch(CategoryRequest $request)
    {
        $keyword = $request->post('keyword');
        $params = [
            'index' => 'category',
            'body' => [
                'query' => [
                    "bool" => [
                        "should" => [
                            ["prefix" => [
                                'name.keyword' => [
                                    'value' => $keyword,
                                    'boost' => 10,
                                ]
                            ]],
                            ["match_phrase_prefix" => [
                                'name' => [
                                    'query' => $keyword,
                                    'boost' => 7,
                                ]
                            ]],
                            ["match" => [
                                'name' => [
                                    'query' =>  $keyword,
                                    'boost' => 6,
                                ],
                            ]],
                            ['wildcard' => [
                                'name.keyword' => [
                                    'value' =>  $keyword . '*',
                                    'boost' => 5,
                                ]
                            ]],
                        ]
                    ],
                ],
                '_source'=>[
                   'id','name'
                ],
                "size" => 10
            ],
        ];
        try {
            $res = app('es')->search($params)->asArray()['hits']['hits'];
            $data = collect($res)->pluck('_source')->all();
            return resReturn(1, $data);
        } catch (Exception $th) {
            return resReturn(0, $th->getMessage());
        }
    }