Yii2将文件保存到Oracle BLOB [英] Yii2 saving file to Oracle BLOB

问题描述

问题是我无法将文件保存到Blob.它的工作原理没有任何错误，临时文件已创建，我可以从中读取.我检查了它是否要绑定-是的，它具有正确的资源值和 \ PDO :: PARAM_LOB 数据类型.

Problem is that i can't save file to blob. It works without any error, temp file is created and i can read from it. I checked if it goes to bind - yes it goes with right resource value and with \PDO::PARAM_LOB data type.

我有一个ActiveRecord类:

I have an ActiveRecord class:

class News extends ActiveRecord
{
    public function rules()
    {
        return [
            [
                ['image'],
                'image',
                'extensions' => 'png jpg',
                'maxSize' => 1024 * 300,
            ]
        ];
    }

    public function beforeSave($insert)
    {
        $fileInfo = UploadedFile::getInstance($this, 'image');
        $this->image = fopen($fileInfo->tempName, 'r+');
        return parent::beforeSave($insert);
    }

}

表格:

CREATE TABLE NEWS
(
    RN NUMBER(17,0) PRIMARY KEY NOT NULL,
    IMAGE BLOB
);

显示此查询的日志:

INSERT INTO "NEWS" ("IMAGE") VALUES (:qp4) RETURNING "RN" INTO :qp8

那么它实际上并没有绑定它或什么?

So it didn't actually bind it or what?

推荐答案

PDO_OCI似乎正在以旧式方式与Oracle一起使用，因此您需要首先开始事务插入 EMPTY_BLOB()，然后将变量与指向文件的指针绑定，执行语句并提交.

It appears that PDO_OCI is working with Oracle in old-style way, so you need to start a transaction insert EMPTY_BLOB() first, then bind variable with pointer to file, execute statement and commit.

我已经完成了更新，因为我不想手动进行完整查询.首先，我将指向文件的指针写入 save()方法的 $ this-> file 中，并调用 $ model-> save&&$ model-> saveImage()在控制器中.

I've done it with update, because i don't want to make full query manually. First i write pointer to file into $this->file in save() method and call $model->save && $model->saveImage() in controller.

public function saveImage()
{
    if (!$this->file) {
        return true;
    }
    $table = self::tableName();
    $rn = $this->rn;
    $command = Yii::$app->getDb()->createCommand(
        "UPDATE $table SET IMAGE=EMPTY_BLOB() WHERE RN=:rn RETURNING IMAGE INTO :image"
    );
    $command->bindParam(':rn', $rn, \PDO::PARAM_STR);
    $command->prepare();
    $command->bindParam(':image', $this->file, \PDO::PARAM_LOB);
    return $command->execute();
}

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