我正在将旧的项目数据库移至新的项目数据库。旧项目数据库的结构是单个MYSQL数据库，新项目是包含多个子域的多租户数据库。同样，新项目已经设置了RESTFUL API来接收来自旧项目的数据。因此，我的想法是在新项目中实现多连接，以便将两个数据库链接在一起，然后从旧项目中获取数据。例如，新项目sales表为空，而旧项目sales表已包含一些数据。现在，在我的新项目界面中，可能会有一个同步按钮，以便将数据从旧数据库移到新数据库中。在将数据发送到新项目之前，我需要传递API密钥吗？由于它是一个多租户结构。
这是我的配置/数据库
'mysql' => array(
'driver' => 'mysql',
'host' => 'aurora-2016-cluster.cluster-rtygfdfg.ap-southwest-1.rds.amazonaws.com',
'database' => 'newProject',
'username' => @$_ENV['DB_USER'] ?: '',
'password' => @$_ENV['DB_PASS'] ?: '',
'charset' => 'utf8',
'collation' => 'utf8_unicode_ci',
'prefix' => '',
),
# Our secondary database connection
'mysql2' => array(
'driver' => 'mysql',
'host' => 'localhost',
'database' => 'oldProject',
'username' => 'root',
'password' => '',
'charset' => 'utf8',
'collation' => 'utf8_unicode_ci',
'prefix' => '',
),
答案 0 :(得分：1)
在laravel中非常简单，打开您的config/databse.php文件
您将找到类似的代码
<?php
return [
/*
|--------------------------------------------------------------------------
| Default Database Connection Name
|--------------------------------------------------------------------------
|
| Here you may specify which of the database connections below you wish
| to use as your default connection for all database work. Of course
| you may use many connections at once using the Database library.
|
*/
'default' => env('DB_CONNECTION', 'mysql'),
/*
|--------------------------------------------------------------------------
| Database Connections
|--------------------------------------------------------------------------
|
| Here are each of the database connections setup for your application.
| Of course, examples of configuring each database platform that is
| supported by Laravel is shown below to make development simple.
|
|
| All database work in Laravel is done through the PHP PDO facilities
| so make sure you have the driver for your particular database of
| choice installed on your machine before you begin development.
|
*/
'connections' => [
'sqlite' => [
'driver' => 'sqlite',
'database' => env('DB_DATABASE', database_path('database.sqlite')),
'prefix' => '',
'foreign_key_constraints' => env('DB_FOREIGN_KEYS', true),
],
'mysql' => [
'driver' => 'mysql',
'host' => env('DB_HOST', '127.0.0.1'),
'port' => env('DB_PORT', '3306'),
'database' => env('DB_DATABASE', 'forge'),
'username' => env('DB_USERNAME', 'forge'),
'password' => env('DB_PASSWORD', ''),
'unix_socket' => env('DB_SOCKET', ''),
'charset' => 'utf8mb4',
'collation' => 'utf8mb4_unicode_ci',
'prefix' => '',
'prefix_indexes' => true,
'strict' => true,
'engine' => null,
],
'pgsql' => [
'driver' => 'pgsql',
'host' => env('DB_HOST', '127.0.0.1'),
'port' => env('DB_PORT', '5432'),
'database' => env('DB_DATABASE', 'forge'),
'username' => env('DB_USERNAME', 'forge'),
'password' => env('DB_PASSWORD', ''),
'charset' => 'utf8',
'prefix' => '',
'prefix_indexes' => true,
'schema' => 'public',
'sslmode' => 'prefer',
],
'sqlsrv' => [
'driver' => 'sqlsrv',
'host' => env('DB_HOST', 'localhost'),
'port' => env('DB_PORT', '1433'),
'database' => env('DB_DATABASE', 'forge'),
'username' => env('DB_USERNAME', 'forge'),
'password' => env('DB_PASSWORD', ''),
'charset' => 'utf8',
'prefix' => '',
'prefix_indexes' => true,
],
],
/*
|--------------------------------------------------------------------------
| Migration Repository Table
|--------------------------------------------------------------------------
|
| This table keeps track of all the migrations that have already run for
| your application. Using this information, we can determine which of
| the migrations on disk haven't actually been run in the database.
|
*/
'migrations' => 'migrations',
/*
|--------------------------------------------------------------------------
| Redis Databases
|--------------------------------------------------------------------------
|
| Redis is an open source, fast, and advanced key-value store that also
| provides a richer body of commands than a typical key-value system
| such as APC or Memcached. Laravel makes it easy to dig right in.
|
*/
'redis' => [
'client' => 'predis',
'default' => [
'host' => env('REDIS_HOST', '127.0.0.1'),
'password' => env('REDIS_PASSWORD', null),
'port' => env('REDIS_PORT', 6379),
'database' => env('REDIS_DB', 0),
],
'cache' => [
'host' => env('REDIS_HOST', '127.0.0.1'),
'password' => env('REDIS_PASSWORD', null),
'port' => env('REDIS_PORT', 6379),
'database' => env('REDIS_CACHE_DB', 1),
],
],
];
要遵循的步骤
第一步： 向数据库连接数组添加新的数据
'mysqlSecondConnection' => [
'driver' => 'mysql',
'host' => env('DB_HOST1', '127.0.0.1'),
'port' => env('DB_PORT1', '3306'),
'database' => env('DB_DATABASE2', 'secondDatabseName'),
'username' => env('DB_USERNAME2', 'secondDatabseUserName'),
'password' => env('DB_PASSWORD2', 'secondDatabsePassword'),
'unix_socket' => env('DB_SOCKET2', ''),
'charset' => 'utf8mb4',
'collation' => 'utf8mb4_unicode_ci',
'prefix' => '',
'strict' => false,
'engine' => null,
],
此后，您的文件可能看起来像
<?php
return [
/*
|--------------------------------------------------------------------------
| Default Database Connection Name
|--------------------------------------------------------------------------
|
| Here you may specify which of the database connections below you wish
| to use as your default connection for all database work. Of course
| you may use many connections at once using the Database library.
|
*/
'default' => env('DB_CONNECTION', 'mysql'),
/*
|--------------------------------------------------------------------------
| Database Connections
|--------------------------------------------------------------------------
|
| Here are each of the database connections setup for your application.
| Of course, examples of configuring each database platform that is
| supported by Laravel is shown below to make development simple.
|
|
| All database work in Laravel is done through the PHP PDO facilities
| so make sure you have the driver for your particular database of
| choice installed on your machine before you begin development.
|
*/
'connections' => [
'sqlite' => [
'driver' => 'sqlite',
'database' => env('DB_DATABASE', database_path('database.sqlite')),
'prefix' => '',
'foreign_key_constraints' => env('DB_FOREIGN_KEYS', true),
],
'mysql' => [
'driver' => 'mysql',
'host' => env('DB_HOST', '127.0.0.1'),
'port' => env('DB_PORT', '3306'),
'database' => env('DB_DATABASE', 'forge'),
'username' => env('DB_USERNAME', 'forge'),
'password' => env('DB_PASSWORD', ''),
'unix_socket' => env('DB_SOCKET', ''),
'charset' => 'utf8mb4',
'collation' => 'utf8mb4_unicode_ci',
'prefix' => '',
'prefix_indexes' => true,
'strict' => true,
'engine' => null,
],
'mysqlSecondConnection' => [
'driver' => 'mysql',
'host' => env('DB_HOST1', '127.0.0.1'),
'port' => env('DB_PORT1', '3306'),
'database' => env('DB_DATABASE2', 'secondDatabseName'),
'username' => env('DB_USERNAME2', 'secondDatabseUserName'),
'password' => env('DB_PASSWORD2', 'secondDatabsePassword'),
'unix_socket' => env('DB_SOCKET2', ''),
'charset' => 'utf8mb4',
'collation' => 'utf8mb4_unicode_ci',
'prefix' => '',
'strict' => false,
'engine' => null,
],
'pgsql' => [
'driver' => 'pgsql',
'host' => env('DB_HOST', '127.0.0.1'),
'port' => env('DB_PORT', '5432'),
'database' => env('DB_DATABASE', 'forge'),
'username' => env('DB_USERNAME', 'forge'),
'password' => env('DB_PASSWORD', ''),
'charset' => 'utf8',
'prefix' => '',
'prefix_indexes' => true,
'schema' => 'public',
'sslmode' => 'prefer',
],
'sqlsrv' => [
'driver' => 'sqlsrv',
'host' => env('DB_HOST', 'localhost'),
'port' => env('DB_PORT', '1433'),
'database' => env('DB_DATABASE', 'forge'),
'username' => env('DB_USERNAME', 'forge'),
'password' => env('DB_PASSWORD', ''),
'charset' => 'utf8',
'prefix' => '',
'prefix_indexes' => true,
],
],
/*
|--------------------------------------------------------------------------
| Migration Repository Table
|--------------------------------------------------------------------------
|
| This table keeps track of all the migrations that have already run for
| your application. Using this information, we can determine which of
| the migrations on disk haven't actually been run in the database.
|
*/
'migrations' => 'migrations',
/*
|--------------------------------------------------------------------------
| Redis Databases
|--------------------------------------------------------------------------
|
| Redis is an open source, fast, and advanced key-value store that also
| provides a richer body of commands than a typical key-value system
| such as APC or Memcached. Laravel makes it easy to dig right in.
|
*/
'redis' => [
'client' => 'predis',
'default' => [
'host' => env('REDIS_HOST', '127.0.0.1'),
'password' => env('REDIS_PASSWORD', null),
'port' => env('REDIS_PORT', 6379),
'database' => env('REDIS_DB', 0),
],
'cache' => [
'host' => env('REDIS_HOST', '127.0.0.1'),
'password' => env('REDIS_PASSWORD', null),
'port' => env('REDIS_PORT', 6379),
'database' => env('REDIS_CACHE_DB', 1),
],
],
];
第2步：在mysqlSecondConnection数组中配置数据库名称
IF THIS PROJECT IS TEAM COLLABRATING DONT FORGET TO ADD THE NEW ATTRIBUTES IN .ENV FILE
步骤3： 现在我们完成了配置数据库
第4步：
打开需要与mysqlSecondConnection数据库进行交互的模型
并添加
属性
protected $connection ='mysqlSecondConnection';
此后，该模式可能类似于：
我认为它是Post.php
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
/**
* Class Cat
*
* @package App
*/
class Post extends Model
{
/**
* The connection name for the model.
*
* @var string
*/
protected $connection ='mysqlSecondConnection';
/**
* The attributes that aren't mass assignable.
*
* @var array
*/
protected $guarded = ['id'];
/**
* The table associated with the model.
*
* @var string
*/
protected $table = 'posts';
/**
* The primary key for the model.
*
* @var string
*/
protected $primaryKey = 'id';
/**
* The "type" of the auto-incrementing ID.
*
* @var string
*/
protected $keyType = 'int';
/**
* The attributes that are mass assignable.
*
* @var array
*/
protected $fillable = ['name','title','desc'];
/**
* The attributes that should be hidden for arrays.
*
* @var array
*/
protected $hidden = [];
/**
* @var array
*/
protected $dates = ['created_at','updated_at'];
}
多数民众赞成
现在是测试部分
在路由文件夹中打开您的web.php文件
并粘贴以下代码
Route::get('/testSecondConnection', function ()
{
$posts= App\Post::all();
dd($posts);
});
现在导航至yourApplication/testSecondConnection
现在看到转储中的connection属性
编辑
我实际上忘记添加另一种通过DB Facade版本的方法
只需将连接名称传递到DB方法内的connection
使用此功能时不会检查模型
对于$connection模型中的Post属性
$dbVersion = \DB::connection('mysqlSecondConnection')->table('posts')->get();
dd($dbVersion);
为But which method is more efficient?编辑
好问题伴侣
情况1：
例如：
如果在项目的所有情况下都将mysqlSecondConnection用于Post模型，则
将此添加到您的模型
protected $connection ='mysqlSecondConnection';
这很好，并且
注意$connection属性将在Eloquent立面中的DB上起作用
情况2：
`例如：'
如果您仅使用很少的查询和对该mysqlSecondConnection的调用
您不需要添加
protected $connection ='mysqlSecondConnection';
Post模型
DB Facade Version
$dbVersion = \DB::connection('mysqlSecondConnection')->table('posts')->get();
dd($dbVersion);
Eloquent Version
$eloquentVersion = Post::on('mysqlSecondConnection')->get()
dd($eloquentVersion);
您可能会感到疑问，为什么数据库模型未在后模型中使用mysqlSecondConnection
解决方案：
使用DB外观
它将进入config/datbase.php
用于default数组
用于连接数据库
'default' => env('DB_CONNECTION', 'mysql'),
希望它能帮助您并使其看起来清晰