configs: overwrite via prepend, mode instead of duration_only (#715)

src/Twig/TimesheetConfigExtension.php

@@ -0,0 +1,42 @@
+<?php
+
+/*
+ * This file is part of the Kimai time-tracking app.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace App\Twig;
+
+use App\Configuration\TimesheetConfiguration;
+use Twig\Extension\AbstractExtension;
+use Twig\TwigFunction;
+
+class TimesheetConfigExtension extends AbstractExtension
+{
+    /**
+     * @var TimesheetConfiguration
+     */
+    protected $configuration;
+
+    public function __construct(TimesheetConfiguration $configuration)
+    {
+        $this->configuration = $configuration;
+    }
+
+    /**
+     * @return TwigFunction[]
+     */
+    public function getFunctions()
+    {
+        return [
+            new TwigFunction('is_duration_only', [$this, 'isDurationOnly']),
+        ];
+    }
+
+    public function isDurationOnly(): bool
+    {
+        return $this->configuration->isDurationOnly();
+    }
+}