Welcome: new controller showing initial help...

...especially in case your config is still missing.

application/controllers/WelcomeController.php

@@ -0,0 +1,20 @@
+<?php
+
+use Icinga\Module\Director\ActionController;
+
+class Director_WelcomeController extends ActionController
+{
+    public function indexAction()
+    {
+        $this->getTabs()->add('welcome', array(
+            'url' => $this->getRequest()->getUrl(),
+            'label' => $this->translate('Welcome')
+        ))->activate('welcome');
+        if (! $this->Config()->get('db', 'resource')) {
+            $this->view->errorMessage = sprintf(
+                $this->translate('No database resource has been configured yet. Please %s to complete your config'),
+                $this->view->qlink($this->translate('click here'), 'director/settings')
+            );
+        }
+    }
+}

application/views/scripts/welcome/index.phtml

@@ -0,0 +1,11 @@
+<div class="controls">
+<?= $this->tabs ?>
+</div>
+
+<div class="content">
+<h1><?= $this->translate('Welcome to the Icinga Director') ?></h1>
+<?php if ($this->errorMessage): ?>
+<p class="error"><?= $this->errorMessage ?></p>
+<?php endif ?>
+Nothing to see here yet. We will point you to the most common tasks later on.
+</div>

library/Director/ActionController.php

@@ -105,7 +105,12 @@ abstract class ActionController extends Controller
     protected function db()
     {
         if ($this->db === null) {
-            $this->db = Db::fromResourceName($this->Config()->get('db', 'resource'));
+            $resourceName = $this->Config()->get('db', 'resource');
+            if ($resourceName) {
+                $this->db = Db::fromResourceName($resourceName);
+            } else {
+                $this->redirectNow('director/welcome');
+            }
         }
 
         return $this->db;

public/css/module.less

@@ -56,3 +56,15 @@ table.log-properties {
         color: white;
     }
 }
+
+p.error {
+    color: white;
+    padding: 1em 2em;
+    background-color: @colorCriticalHandled;
+    border: 3px solid @colorCritical;
+
+    a {
+        color: inherit;
+        font-weight: bold;
+    }
+}