mysql - 如何使用 yii 模型插入 mysql 空间点？

Question

我有一个从 mysql 表生成的模型类型，该表具有地址数据以及名为“坐标”的空间 POINT 字段。创建或更新模型时，我想对地址进行地理编码并将纬度和经度坐标存储在 POINT 字段中。

我的理解是执行此操作的方法是在模型的 beforeSave 方法中对地址进行地理编码。我已经这样做了，并且在关联数组中有坐标。现在我的问题是如何将这些数据插入到我的坐标字段中？这就是我正在尝试的:

public function beforeSave()
{
    $singleLineAddress = $this->getSingleLineAddress();
    $coords = Geocoder::getCoordinates($singleLineAddress);

    // WORKS: using the following line works to insert POINT(0 0)
    //$this->coordinates = new CDbExpression("GeomFromText('POINT(0 0)')");

    // DOESN'T WORK: using the following line gives an error
    $this->coordinates = new CDbExpression("GeomFromText('POINT(:lat :lng)')",
        array(':lat' => $coords['lat'], ':lng' => $coords['lng'] ));

    return parent::beforeSave();
}

当我这样做时，出现以下错误:

CDbCommand failed to execute the SQL statement: SQLSTATE[HY093]: Invalid parameter number: number of bound variables does not match number of tokens. The SQL statement executed was: INSERT INTO place (city, state, name, street, postal_code, phone, created, coordinates) VALUES (:yp0, :yp1, :yp2, :yp3, :yp4, :yp5, UTC_TIMESTAMP(), GeomFromText('POINT(:lat :lng)'))

Answer 1

如果您使用的是 Yii 2，请对 @dlnGd0nG 的回答进行小幅修改

$this->coordinates = new yii\db\Expression("GeomFromText(:point)",
    array(':point'=>'POINT('.$coords['lat'].' '.$coords['lng'].')'));