如何在 Laravel 中使用数据库进行邮件设置

我想让用户远离编辑配置文件，所以我在管理面板中制作了 Web 界面，用于设置邮件服务器、用户名、密码、端口、加密。 我在 Laravel 4.2 中工作得很好，但是现在当应用程序被重写为 Laravel 5 时，出现错误：

Class 'Settings' not found in <b>F:\htdocs\app\config\mail.php</b> on line <b>18</b><br />

为此，我创建了一个服务提供者，制作了一个外观，将它们放在 config/app.php 中，Settings::get('var')/Settings::set('var')工作完美，但不适用于邮件设置。

配置/mail.php：

<?php return array(
            'driver' => Settings::get('mail_driver'),
            'host' => Settings::get('mail_host'),
            'port' => Settings::get('mail_port'),
            'from' => array('address' => Settings::get('mail_from_address'), 'name' => Settings::get('mail_from_name')),
            'encryption' => Settings::get('mail_encryption'),
            'username' => Settings::get('mail_username'),
            'password' => Settings::get('mail_password'),
            'sendmail' => Settings::get('mail_sendmail'),
            'pretend' => false,
            );

配置/app.php：

'providers' => [

    ...

    'App\Providers\SettingsServiceProvider',

    ...

'aliases' => [

    ...

    'Settings' => 'App\Custom\Facades\Settings',

<?php namespace App\Providers;

use Illuminate\Support\ServiceProvider;
use App\Custom\Settings;

class SettingsServiceProvider extends ServiceProvider {

/**
 * Bootstrap the application services.
 *
 * @return void
 */
public function boot()
{
    //
}

/**
 * Register the application services.
 *
 * @return void
 */
public function register()
{
    $this->app->singleton('settings', function()
    {
        return new Settings;
    });
}

}

<?php namespace App\Custom;

use App\Setting;

class Settings {
public function get($var) {

    try{
        $setting = Setting::first();                

    } catch(exception $e)
    {
        return false;
    }

    return $setting->$var;

}

public function set($var, $val) {

    try{
        $setting = Setting::first();
        $setting->$var = $val;              
        $setting->save();               

    } catch(exception $e)
    {
        return false;
    }

    return true;

}   
}

<?php

namespace App\Custom\Facades;

use Illuminate\Support\Facades\Facade;

class Settings extends Facade {

    protected static function getFacadeAccessor() { return 'settings'; }

}

有什么想法如何使用数据库实现 Laravel 邮件设置吗？

为了存档我创建的CustomMailServiceProvider通过扩展Illuminate\Mail\MailServiceProvider从而覆盖这个方法：

protected function registerSwiftTransport(){
    $this->app['swift.transport'] = $this->app->share(function($app)
    {
    return new TransportManager($app);
    });
}

这是完整的解决方案

1. 我在 app\Providers 中创建了 CustomMailServiceProvider.php

namespace App\Providers;

use Illuminate\Mail\MailServiceProvider;
use App\Customs\CustomTransportManager;

class CustomMailServiceProvider extends MailServiceProvider{

    protected function registerSwiftTransport(){
        $this->app['swift.transport'] = $this->app->share(function($app)
        {
            return new CustomTransportManager($app);
        });
    }
}

2. 我在 app/customs 目录中创建了 CustomTransportManager.php - 注意：默认的 laravel 5 目录结构中不存在 app/customs 目录，我创建了它

namespace App\Customs;

use Illuminate\Mail\TransportManager;
use App\Models\Setting; //my models are located in app\models

class CustomTransportManager extends TransportManager {

    /**
     * Create a new manager instance.
     *
     * @param  \Illuminate\Foundation\Application  $app
     * @return void
     */
    public function __construct($app)
    {
        $this->app = $app;

        if( $settings = Setting::all() ){

            $this->app['config']['mail'] = [
                'driver'        => $settings->mail_driver,
                'host'          => $settings->mail_host,
                'port'          => $settings->mail_port,
                'from'          => [
                'address'   => $settings->mail_from_address,
                'name'      => $settings->mail_from_name
                ],
                'encryption'    => $settings->mail_encryption,
                'username'      => $settings->mail_username,
                'password'      => $settings->mail_password,
                'sendmail'      => $settings->mail_sendmail,
                'pretend'       => $settings->mail_pretend
           ];
       }

    }
}

3. 最后，我替换了'Illuminate\Mail\MailServiceProvider',在 config/app.php 中'App\Providers\CustomMailServiceProvider',