Yii2 Elasticsearch 扩展——如何处理类型映射?

Yii2 Elasticsearch extension - how do I handle type mapping?

我希望能够在我的 ES 索引中存储一个 json 对象。这是我尝试存储的示例(这是一个序列化模型,一个发送到 ES 的请求主体):

"{"id":218,"name":"Test2","category_id":1,"address":"Pushkin street","phone":null,"site":null,"location":{"lat":64,"lon":70},"city":"Heaven","description":"Super company","tags":["#test1","#test2"]}"

当我尝试存储它时(当然是通过扩展),这是 ES returns:

的错误
"{"error":{"root_cause":[{"type":"mapper_parsing_exception","reason":"failed to parse [location]"}],"type":"mapper_parsing_exception","reason":"failed to parse [location]","caused_by":{"type":"illegal_argument_exception","reason":"unknown property [lat]"}},"status":400}"

如果没有特定的类型映射,我似乎无法这样做,就像在文档中那样: https://www.elastic.co/guide/en/elasticsearch/reference/1.4/mapping-object-type.html

但是,我似乎找不到在模型内部提供该映射的方法。扩展的文档并没有真正说明它。 所以,我的问题是:我是否需要它,如果需要,怎么做?

感谢所有反馈。

我假设您的模型是 \yii\elasticsearch\ActiveRecord。您需要描述其属性:

public function attributes()
{
  return [
    'name',
    'category_id',
    'address',
    'phone',
    'site',
    'location',
    'city',
    'description',
    'tags'
  ];
}

不要忘记配置 index()type()。在下面的例子中 typemy_address.

然后你需要create an index with proper field mapping。您的映射应如下所示:

"mappings" : {
  "my_address" : {
    "properties" : {
      "name" : { "type" : "string"},
      "category_id" : { "type" : "integer"},
      "address" : { "type" : "string"},
      "phone" : { "type" : "string"},
      "site" : { "type" : "string"},
      "location" : { "type" : "geo_point"},
      "city" : { "type" : "string"},
      "description" : { "type" : "string"},
      "tags" : { "type" : "string"}
    }
  }
}

注意三件事:

  1. 位置类型为 geo_point
  2. 标签声明为 string。这也将允许它们成为字符串数组。
  3. 我没有包含 id 字段。如果它是唯一的,我建议您将您的 yii 模型的 id 设置为必要的值 ($model->primaryKey = '123')。否则,您的 ES 模型会将其内部 ID 设置为 AVDXmfJ3Ou7LzqD1DDMj 之类的内容,并且还有一个 id 字段,这不是很方便。

我鼓励您仔细查看映射 - 在配置字符串分析的准确方式时,它们非常重要。

更新:您并没有真正描述模型中任何地方的映射。在迁移中执行 - 类似于在 SQL.

中创建表

如果您使用 ElasticSearch ActiveRecord ,您可以为 setupMapping 定义一个方法

Class BookIndex extends yii\elasticsearch\ActiveRecord
{
    /**
     * sets up the index for this record
     *
     */
    public static function setUpMapping()
    {
        $db = static::getDb();

        //in case you are not using elasticsearch ActiveRecord so current class extends database ActiveRecord yii/db/activeRecord
        // $db = yii\elasticsearch\ActiveRecord::getDb();

        $command = $db->createCommand();

        /*
         * you can delete the current mapping for fresh mapping but this not recommended and can be dangrous.
         */

        // $command->deleteMapping(static::index(), static::type());

        $command->setMapping(static::index(), static::type(), [
            static::type() => [
                // "_id" => ["path" => "id", "store" => "yes"],
                "properties" => [
                    'name'           => ["type" => "string"],
                    'author_name'    => ["type" => "string"],
                    'publisher_name' => ["type" => "string"],
                    'created_at'     => ["type" => "long"],
                    'updated_at'     => ["type" => "long"],
                    'status'         => ["type" => "long"],

                ],
            ],
        ]);
    }
}

稍后您只需在需要应用新映射的任何时候调用此方法即可。