Yii2-elasticsearch的簡單使用

首先自己先根據GitHub上的yii2-elasticsearch進行安裝，對elasticsearch一些基本的檔案內容要大體有些了解，可以進官網進行查看檔案，這里就不過多介紹，直接上有關Yii2原始碼部分，一看就懂，git???????GitHub - yiisoft/yii2-elasticsearch: Yii 2 Elasticsearch extensionYii 2 Elasticsearch extension. Contribute to yiisoft/yii2-elasticsearch development by creating an account on GitHub.https://github.com/yiisoft/yii2-elasticsearch/model部分：

<?php

namespace app\models\es_models;

use yii\elasticsearch\ActiveRecord;


class Document extends ActiveRecord
{
    public static function index()
    {
        return 'document';//設定檔案名稱，不設定默認帶s結尾
    }

    //指定檔案型別
    public static function type()
    {
        return '_doc';
    }

    //指定檔案屬性
    public function attributes()
    {
        return ['id', 'title','content','status','author'];
    }

    public static function getMapping()
    {
        return [
                    'properties' => [
                        'id'=> ['type' => 'integer'],
                        'title'=> ['type' => 'text','analyzer'=>'ik_smart'],
                        'content'=> ['type' => 'text','analyzer'=>'ik_smart'],
                        'status'=> ['type' => 'integer'],
                        'author'=> ['type' => 'text','analyzer'=>'ik_smart'],
                    ]
               ];
    }

    /**
     * Create this model's index
     */
    public static function createIndex()
    {
        $db = static::getDb();
        $command = $db->createCommand();
        $command->createIndex(static::index(), [
            'mappings' => static::getMapping(),
        ]);
    }

    public function checkIndex()
    {
        $db = self::getDb();
        $command = $db->createCommand();
        if (!$command->indexExists(self::index())) {
            return false;
        }else{
            return true;
        }
    }

}

控制器部分：

<?php

namespace app\controllers;

use app\models\es_models\Document;
use yii\web\Controller;
use Yii;

class EsSearchController extends Controller
{
    //創建Index
    public function actionCreateIndex()
    {
        $es = new Document();
        if(!$es->checkIndex()){
            $es::createIndex();
            echo '創建成功';
            die;
        }
        echo '已創建';die;
    }

    //搜索
    public function actionEsSearch()
    {
        $page = Yii::$app->request->get('page') ?: 1;
        $page_size = Yii::$app->request->get('pageSize') ?: 10;
        $keyword = Yii::$app->request->get('keyword') ?: '';
        $offset = ($page - 1) * $page_size;
        $es = new Document();
        //此處組裝query有點小坑，可以根據es檔案把json轉為陣列，不然容易出錯
        //此處的條件相當于where status in (1,2) and (title like '%keyword%' or content like '%keyword%')
        $query = [
            'bool' => [
                'must' => [
                    [
                        'terms' => [
                            'status' => [1,2],
                        ],
                    ],
                    [
                        'bool' => [
                            'should' => [
                                [
                                    'match' => [
                                        'title' => [
                                            'query' => $keyword,
                                            'boost' => 1, //權重
                                        ],
                                    ]
                                ],
                                [
                                    'match' => [
                                        'content' => [
                                            'query' => $keyword,
                                            'boost' => 1, //權重
                                        ],
                                    ]
                                ],
                            ],
                        ],
                    ],
                ],
            ],
        ];

        $hightlight = [
            "pre_tags" => ['<span class="text-danger">'],//要高亮的顏色css的class
            "post_tags" => ['</span>'],
            "fields" => [
                'content' => new \stdClass(),
                'title' => new \stdClass()
            ]
        ];
        $es_data = $es::find()
            ->source(['id', 'title', 'content', 'status','author'])
            ->query($query)
            ->highlight($hightlight)
            ->offset($offset)
            ->limit($page_size)
            ->asArray()
            ->all();
        echo json_encode($es_data);//打完收工
        exit;
    }

    //搞點資料測驗
    public function actionSetEsContent()
    {
        $Document = new Document();
        $Document->id = 1; // setting primary keys is only allowed for new records
        $Document->title = '大佬'; // attributes can be set one by one
        $Document->content = '大佬6666';
        $Document->status = 1;
        $Document->author = '牛皮';
        $res = $Document->save();
    }
}

先執行創建index的方法：

可以看到kibana后臺界面已經成功創建出document，（kibana是es的可視化界面可以在官網查看安裝檔案，安裝對應es版本即可）

下一步我們執行創建假資料的介面actionSetEsContent，改變資料執行多幾遍搞多幾條資料，開發時可以寫一個同步文章的命令列介面，定時執行把文章更新到es，

此時kibana里已經有一條資料，

最后我們執行搜索介面actionEsSearch

打完收工，，，，