How to use database for mail settings in Laravel

Question

I\'d like to keep users away from editing configuration files, so I\'ve made web interface in admin panel for setting up Mail server, username, password, port, encryption.. I w

Answer 1

To archive this I created CustomMailServiceProvider by extending Illuminate\Mail\MailServiceProvider so as to overwrite this method:

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

Here is the complete solution

1. I created CustomMailServiceProvider.php in app\Providers

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. I created CustomTransportManager.php in app/customs directory - NB: app/customs directory doesn't exist in default laravel 5 directory structure, I created it

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. And finally, I replaced 'Illuminate\Mail\MailServiceProvider', in config/app.php with 'App\Providers\CustomMailServiceProvider',

Answer 2

I configured as mentioned, however got the following error. While I tried your code found that from Laravel 5.4 share method is deprecated and instead informed to use singleton.

Call to undefined method Illuminate\Foundation\Application::share()

here is the below method using singleton instead using share method:

protected function registerSwiftTransport(){
    $this->app->singleton('swift.transport', function ($app){
        return new CustomTransportManager($app);
    });
}

Answer 3

@DigitLimit , method share() has been dropped since Laravel 5.4. I had to work-around this problem using other methods, and I am not sure they are perfect. Here is my registerSwiftTransport() method in CustomMailServiceProvider class.

Firstly, we need to determine if code is not executed while calling app through command line: "if(strpos(php_sapi_name(), 'cli') === false)". If we don't check that and don't prevent setting new params in this case, Artisan will throw us errors in command line. Secondly, we need to get settings from database somehow. I did it using my method getSettingValue(), where first argument is setting key, and second argument is default value if setting is not found. As you see, I assigned settings to $this->app['config']['mail']. After that, I used singleton() method:

protected function registerSwiftTransport(){
    if (strpos(php_sapi_name(), 'cli') === false) {
       $this->app['config']['mail'] = [
        'driver'        => Setting::getSettingValue('mail_driver', '****'),
        'host'          => Setting::getSettingValue('mail_host', '****'),
        'port'          => Setting::getSettingValue('mail_port', 25),
        'from'          => [
            'address'   => Setting::getSettingValue('mail_from_address', '****'),
            'name'      => Setting::getSettingValue('mail_from_name', '****'),
        ],
        'encryption'    => Setting::getSettingValue('mail_encryption', '***'),
        'username'      => Setting::getSettingValue('mail_username', '****'),
        'password'      => Setting::getSettingValue('mail_password', '****'),
     ];
   }

   $this->app->singleton('swift.transport', function ($app) { 
       return new Illuminate\Mail\TransportManager($app);
   });
}

Answer 4

I have added

$this->app['config']['services'] = [
        'mailgun' => [
            'domain' => $settings->mailgun_domain,
            'secret' => $settings->mailgun_secret,
        ]
        ];   

to CustomTransportManager __construct() to include mailgun API credentials that I'm using as mailing service