Question

我正在使用Blue-imp文件上传来上传文件，一切看起来效果都很好。我将用户数据基于userId保存到用户目录，但是当我尝试从数据库中删除数据时，它会删除$ name变量，即文件名。

这意味着具有相同文件名的文件的所有用户都将从数据库中删除。如何设置uploadHander.php文件中的删除按名称和userId删除？或者通过插入ID？

类CustomUploadHandler扩展了UploadHandler {

protected function handle_form_data($file, $index) {
    $file->description = $_REQUEST['description'][$index];
    $file->userId = $_REQUEST['userId'][$index];
    $file->location = $_REQUEST['location'][$index];
    $file->customId = $_REQUEST['customId'][$index];
}

protected function handle_file_upload($uploaded_file, $name, $size, $type, $error,
    $index = null, $content_range = null) {
    $file = parent::handle_file_upload(
    $uploaded_file, $name, $size, $type, $error, $index, $content_range
    );


    if (empty($file->error)) {

        $sql = 'INSERT INTO `'.$this->options['db_table']
            .'` (`name`, `size`, `type`, `userId`, `description`,`location`,`customId`,`url`)'
            .' VALUES (?, ?, ?, ?, ?, ?,?,?)';
        $query = $this->db->prepare($sql);
        $query->bind_param(
            'sissssss',
            $file->name,
            $file->size,
            $file->type,
            $file->userId,
            $file->description,
            $file->location,
            $file->customId,
            $file->url
        );
        $query->execute();
        $file->id = $this->db->insert_id;

    }
    return $file;
}

protected function set_additional_file_properties($file) {
    parent::set_additional_file_properties($file);
    if ($_SERVER['REQUEST_METHOD'] === 'GET') {
        $sql = 'SELECT  `type`, `description`,`location`,`userId`,`customId`,`url` FROM `'
            .$this->options['db_table'].'` WHERE `name`=? and `id`=?';
        $query = $this->db->prepare($sql);
        $query->bind_param('ss', $file->name,$file->id);
        $query->execute();
        $query->bind_result(
            $type,
            $description,
            $location,
            $userId,
            $customId,
            $url

        );
        while ($query->fetch()) {
             $file->type = $type;
             $file->description = $description;
             $file->location = $location;
             $file->userId = $userId;
             $file->customId=$customId;
             $file->url=$url;

        }
    }
}

public function delete($print_response = true) {
    $response = parent::delete(false);
    foreach ($response as $name => $deleted) {
        if ($deleted) {
            $sql = 'DELETE FROM `'.$this->options['db_table'].'` WHERE `name`=? AND `id`=?';
            $query = $this->db->prepare($sql);
            $query->bind_param('ss',$name,$id);


            $query->execute();

        }
    } 
    return $this->generate_response($response, $print_response);
}

}

$ upload_handler = new CustomUploadHandler（$ options）;

Answer 1

我在您的代码中发现了一个错误

$query->bind_param('ss',$name,$id);

使用

query->bind_param('si',$name,$id);

$ id是一个整数，你用字符串定义它。

希望这对你有用。

使用此代码==＆gt;

public function delete($print_response = true) { 
    $response = parent::delete(false);
    foreach ($response as $name => $deleted) {
        if ($deleted) {
            $sql = 'DELETE FROM `'.$this->options['db_table'].'` WHERE `name`=? AND `id`=?';
            $query = $this->db->prepare($sql);
            $query->bind_param('si',$name,$id);
            $query->execute();
        }
    } 
    return $this->generate_response($response, $print_response);
}

使用附加变量从数据库中删除Blue-imp文件上载

1 个答案: