Fixed BC break in AdDSwiftMailerTransportPass

Author: Nyholm

DependencyInjection/Compiler/AddSwiftMailerTransportPass.php

@@ -24,7 +24,7 @@
 class AddSwiftMailerTransportPass implements CompilerPassInterface
 {
     /**
-     * {@inheritDoc}
+     * {@inheritdoc}
      */
     public function process(ContainerBuilder $container)
     {
@@ -34,22 +34,23 @@ public function process(ContainerBuilder $container)
             $definition = $container->getDefinition($id);
             $mailerId = (string) $definition->getArgument(0);
 
-            if (
-                $container->hasAlias($mailerId . '.transport.real') ||
-                $container->hasDefinition($mailerId . '.transport.real')
-            ) {
-                $definition->addMethodCall(
-                    'setTransport',
-                    array(new Reference($mailerId . '.transport.real'))
-                );
-            } elseif (
-                $container->hasAlias($mailerId . '.transport') ||
-                $container->hasDefinition($mailerId . '.transport')
-            ) {
-                $definition->addMethodCall(
-                    'setTransport',
-                    array(new Reference($mailerId . '.transport'))
-                );
+            // Try to fetch the transport for a non-default mailer first, then go with the default swiftmailer
+            $possibleServices = array(
+                $mailerId.'.transport.real',
+                $mailerId.'.transport',
+                'swiftmailer.transport.real',
+                'swiftmailer.transport',
+            );
+
+            foreach ($possibleServices as $serviceId) {
+                if ($container->hasAlias($serviceId) || $container->hasDefinition($serviceId)) {
+                    $definition->addMethodCall(
+                        'setTransport',
+                        array(new Reference($serviceId))
+                    );
+
+                    break;
+                }
             }
         }
     }