如何在Symfony 4中

时间:2019-07-12 15:12:31

标签: symfony4

我正在尝试使用Symfony 4自动创建数据库。以一种形式为我的数据库定义名称就足够了,然后我的控制器(或服务)自动使用该名称创建数据库,并使用已经创建的实体。

我正在使用Symfony 4.2和Mysql 5.7

我的doctrine.yaml

doctrine:
    dbal:
        default_connection: default
        connections:
            default:
                url: '%env(resolve:DATABASE_URL)%default'
                driver: 'pdo_mysql'
                server_version: '5.7'
                charset: utf8mb4
                default_table_options:
                    charset: utf8mb4
                    collate: utf8mb4_unicode_ci
            customer1:
                url: '%env(resolve:DATABASE_URL)%customer1'
                driver: 'pdo_mysql'
                server_version: '5.7'
                charset: utf8mb4
                default_table_options:
                    charset: utf8mb4
                    collate: utf8mb4_unicode_ci
            customer2:
                url: '%env(resolve:DATABASE_URL)%customer2'
                driver: 'pdo_mysql'
                server_version: '5.7'
                charset: utf8mb4
                default_table_options:
                    charset: utf8mb4
                    collate: utf8mb4_unicode_ci

    orm:
        auto_generate_proxy_classes: true
        default_entity_manager: gomyclic
        entity_managers:
            default:
                connection: default
                mappings:
                    Main:
                        is_bundle: false
                        type: annotation
                        dir: '%kernel.project_dir%/src/Entity/Main'
                        prefix: 'App\Entity\Main'
                        alias: Main
            customer1:
                connection: customer1
                mappings:
                    Customer1:
                        is_bundle: false
                        type: annotation
                        dir: '%kernel.project_dir%/src/Entity'
                        prefix: 'App\Entity'
                        alias: Customer1
            customer2:
                connection: customer2
                mappings:
                    Customer2:
                        is_bundle: false
                        type: annotation
                        dir: '%kernel.project_dir%/src/Entity'
                        prefix: 'App\Entity'
                        alias: Customer2

.env中的DATABASE_URL变量

DATABASE_URL=mysql://dbuser:dbsecret@127.0.0.1:3306/

还有我的控制器中的实际代码 修改doctrine.yaml文件的部分

use Symfony\Component\Yaml\Yaml;
use Symfony\Bundle\FrameworkBundle\Console\Application;
use Symfony\Component\HttpKernel\KernelInterface;
use Symfony\Component\Console\Input\ArrayInput;
use Symfony\Component\Console\Output\BufferedOutput;

        $path = __DIR__ . '/../../config/packages/doctrine.yaml';
        $database_name = 'mydatabase';
        $file = Yaml::parseFile($path);
        $dbal = [
            "url" => sprintf("%%env(resolve:DATABASE_URL)%%%s", strtolower($database_name)),
            "driver" => "pdo_mysql",
            "server_version" => "5.7",
            "charset" => "utf8mb4",
            "default_table_options" => [
                "charset" => "utf8mb4",
                "collate" => "utf8mb4_unicode_ci"
            ]
        ];
        $orm = [
            "connection" => strtolower($database_name),
            "mappings" => [
                ucfirst(strtolower($database_name)) =>  [
                    "is_bundle" => false,
                    "type" => "annotation",
                    "dir" => "%kernel.project_dir%/src/Entity",
                    "prefix" => "App\Entity",
                    "alias" => ucfirst(strtolower($database_name)),
                ]
            ]
        ];
        $file['doctrine']['dbal']['connections'][strtolower($database_name)] = $dbal;
        $file['doctrine']['orm']['entity_managers'][strtolower($database_name)] = $orm;
        $yaml = Yaml::dump($file, 8);
        file_put_contents($path, $yaml);

还有应该创建数据库并使用表来实现的部分

        $application = new Application($kernel);
        $application->setAutoExit(false);
        $input = new ArrayInput([
            'command' => 'doctrine:database:create',
            '--connection' => strtolower($database_name)
        ]);
        $output = new BufferedOutput();
        $application->run($input, $output);
        $content = $output->fetch();

        $application = new Application($kernel);
        $application->setAutoExit(false);
        $input = new ArrayInput([
            'command' => 'doctrine:schema:create',
            '--em' => strtolower($database_name)
        ]);
        $output = new BufferedOutput();
        $application->run($input, $output);
        $content = $output->fetch();

这样一来,我们就可以在同一个symfony应用程序上创建多个数据库,同时可以创建新数据库,而不必强迫手动编辑doctrine.yaml文件来创建新的dbal和orm。

通过现在运行代码,我得到了这两个错误:

Error thrown while running command
"doctrine:database:create --connection=mydatabase"
. Message:
"Doctrine ORM Connection named "mydatabase" does not exist."
Error thrown while running command
"doctrine:schema:create --em=mydatabase"
. Message:
"Doctrine ORM Manager named "mydatabase" does not exist."

通过在Internet上寻找解决方案,我知道我必须重新初始化容器,但是我没有找到一种方法来处理我的特殊情况,我希望有另一种方法可以使用Symfony4和Doctrine来完成此工作。

1 个答案:

答案 0 :(得分:0)

您已创建3个数据库连接:

  • 默认
  • customer1
  • customer2

并且错误消息显示“ mydatabase”不存在。正确,未配置。 doctrine:database:create在doctrine.yaml中寻找配置。

因此,您将必须动态更改配置,这是一个巨大的安全漏洞。

您的用例看起来很适合docker设置。使用docker,您可以创建具有所需功能的基础映像,然后为新数据库创建新的dockerfile,然后启动新的容器。

对于每个容器中的启动脚本,可以有一个sql脚本,该脚本可以根据需要通过doctrine migration初始化所有表。