Laravel回滚特定的数据库

Question

我尝试使用php artisan migrate:rollback --database='system'回滚我的数据库系统php artisan migrate:rollback --database='system'

但似乎并不能像php artisan migrate --database='system

你不能帮我发现发生了什么事。

这是我的config / database.php

'connections' => [

    'sqlite' => [
        'driver' => 'sqlite',
        'database' => env('DB_DATABASE', database_path('database.sqlite')),
        'prefix' => '',
    ],

    'mysql' => [
        'driver'    => 'mysql',
        'host'      => env('DB_HOST', 'localhost'),
        'port'      => env('DB_PORT', '4444'),
        'database'  => env('DB_DATABASE', 'forge'),
        'username'  => env('DB_USERNAME', 'forge'),
        'password'  => env('DB_PASSWORD', ''),
        'charset'   => 'utf8',
        'collation' => 'utf8_unicode_ci',
        'prefix'    => '',
        'strict'    => false,
        'engine'    => null,
    ],

    'system' => [
        'driver' => 'mysql',
        'host' => env('SYSTEM_DB_HOST', 'localhost'),
        'port' => env('SYSTEM_DB_PORT', '4444'),
        'database' => env('SYSTEM_DB_DATABASE', 'forge'),
        'username' => env('SYSTEM_DB_USERNAME', 'forge'),
        'password' => env('SYSTEM_DB_PASSWORD', ''),
        'charset' => 'utf8',
        'collation' => 'utf8_unicode_ci',
        'prefix' => '',
        'strict' => false,
        'engine' => null,
    ],

这是我的.env文件。

#-----------------------------------------------------
# CLIENT DB CONNECTION
#-----------------------------------------------------
DB_CONNECTION=mysql
DB_HOST=127.0.0.1
DB_PORT=3306
DB_DATABASE=databaseNameClient
DB_USERNAME=homestead
DB_PASSWORD=secret

#-----------------------------------------------------
# SYSTEM DB CONNECTION
#-----------------------------------------------------
DB_CONNECTION=system
SYSTEM_DB_HOST=127.0.0.1
SYSTEM_DB_PORT=3306
SYSTEM_DB_DATABASE=databaseNameSystem
SYSTEM_DB_USERNAME=homestead
SYSTEM_DB_PASSWORD=secret

这是我尝试迁移时收到的消息错误：rollback --database ='system'：

[Symfony\Component\Debug\Exception\FatalThrowableError]
  Call to undefined method Illuminate\Database\Schema\MySqlBuilder::dddconnection()

我的堆栈跟踪的最后几行是：

#23 /vendor/symfony/console/Application.php(117): Symfony\Component\Console\Application->doRun(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#24 /vendor/laravel/framework/src/Illuminate/Foundation/Console/Kernel.php(107): Symfony\Component\Console\Application->run(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#25 /artisan(35): Illuminate\Foundation\Console\Kernel->handle(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#26 {main}  
[2018-04-17 00:51:07] local.ERROR: Symfony\Component\Debug\Exception\FatalThrowableError: Call to undefined method Illuminate\Database\Schema\MySqlBuilder::dddconnection() in /vendor/laravel/framework/src/Illuminate/Support/Facades/Facade.php:217

Answer 1

您不小心更改了供应商文件夹中的方法。

第1步。

删除供应商文件夹。

第2步。

跑

composer install

它将再次安装所有库并覆盖更改。

希望这可以帮助

Answer 2

如果不查看完整的错误日志，很难说，但是如果您通过提供特定的数据库连接来创建迁移方法，则还有其他选择

Schema::connection('mysql2')->create('some_table', function($table)
{
$table->increments('id'):
});

然后，只有php artisan migrate:rollback可以完美地工作。

Answer 3

If you look in your migrations table, then you’ll see each migration 
 has a batch number. So when you roll back, it rolls back each 
 migration that was part of the last batch.

If you only want to roll back the very last migration, then just 
increment the batch number by one. Then next time you run the rollback 
    command, it’ll only roll back that one migration as it’s in a “batch” of 
 its own.

有关更多信息，请访问url： 在Laravel中回滚一个特定的迁移

Answer 4

嗨，谢谢大家抽出宝贵时间回答我的问题。 我发现发生了什么事。 迁移后，在向下功能中我有一个功能拼写错误

         public function down()
{
    if (Schema::dddconnection('system')->hasTable('apiservices_categories_translations')) {
        Schema::connection('system')->dropIfExists('apiservices_categories_translations');
    }
}