在一个项目中，有时候需要连接多个数据库
laravel 是否可以连接多个数据库？ laravel 数据库是如何设置 如何使用的？
首先找到 config/database.php 这个文件
<?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', 'bhc_region_c'),
/*
|--------------------------------------------------------------------------
| 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' => [
'region_c' => [
'driver' => 'mysql',
'write' => [
'host' => env('REGION_C_DB_HOST', '127.0.0.1'),
'username' => env('REGION_C_DB_USERNAME', 'root'),
'password' => env('REGION_C_DB_PASSWORD'),
'port' => env('REGION_C_DB_PORT', '3306'),
],
'read' => [
'host' => env('SLAVE_REGION_C_DB_HOST', '127.0.0.1'),
'username' => env('SLAVE_REGION_C_DB_USERNAME', 'root'),
'password' => env('SLAVE_REGION_C_DB_PASSWORD'),
'port' => env('SLAVE_REGION_C_DB_PORT', '3306'),
],
'database' => env('REGION_C_DB_DATABASE'),
'charset' => 'utf8mb4',
'collation' => 'utf8mb4_unicode_ci',
'prefix' => '',
'strict' => true,
'engine' => null,
'options'=> [
PDO::ATTR_EMULATE_PREPARES => true
],
],
'anhao_four' => [
'driver' => 'mysql',
'host' => env('ANHAO_FOUR_DB_HOST', '127.0.0.1'),
'port' => env('ANHAO_FOUR_DB_PORT', '3306'),
'database' => env('ANHAO_FOUR_DB_DATABASE', 'forge'),
'username' => env('ANHAO_FOUR_DB_USERNAME', 'forge'),
'password' => env('ANHAO_FOUR_DB_PASSWORD', ''),
'unix_socket' => env('ANHAO_FOUR_DB_SOCKET', ''),
'charset' => 'utf8mb4',
'collation' => 'utf8mb4_unicode_ci',
'prefix' => '',
'strict' => false,
'engine' => null,
'options'=> [
PDO::ATTR_EMULATE_PREPARES => 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 set of commands than a typical key-value systems
| such as APC or Memcached. Laravel makes it easy to dig right in.
|
*/
/**
* 是否开启sql语句日志
*/
'enableQueryLog' => env('ENABLE_QUERY_LOG', false),
];
namespace App\Models\BhcRegionC;
use Illuminate\Database\Eloquent\Model as BaseModel;
class Model extends BaseModel
{
const CREATED_AT = 'gmt_created';
const UPDATED_AT = 'gmt_modified';
protected $connection = 'region_c'; // 连接 region_c 连接
}
class Model extends BaseModel
{
const CREATED_AT = 'gmt_created';
const UPDATED_AT = 'gmt_modified';
protected $connection = 'anhao_four'; // 连接 region_c 连接
}