adding twig helper for routing and more

Templating/ChillTwigHelper.php

@@ -0,0 +1,62 @@
+<?php
+/*
+ * 
+ */
+namespace Chill\MainBundle\Templating;
+
+use Twig\Extension\AbstractExtension;
+use Twig\TwigFilter;
+use Twig\Environment;
+
+/**
+ * 
+ */
+class ChillTwigHelper extends AbstractExtension
+{
+    public function getFilters()
+    {
+        return [
+            new TwigFilter('chill_print_or_message', [$this, 'printOrMessage'], [
+                'needs_environment' => true,
+                'is_safe' => ['html', 'html_attrs']
+            ]),
+        ];
+    }
+    
+    /**
+     * Print `value` inside a template, or, if $value is empty, 
+     * print $message.
+     * 
+     * The template can be customized. The template is a full path to another
+     * template, or one of the key belows: 
+     * 
+     * - 'default' ;
+     * - 'blockquote' ;
+     * 
+     * @param Environment $twig
+     * @param string $value
+     * @param string $message
+     * @param string $template
+     * @return string
+     */
+    public function printOrMessage(
+        Environment $twig,
+        $value, 
+        $message = 'No value', 
+        $template = 'default'
+    ) {
+        switch ($template) {
+            case 'default':
+            case 'blockquote':
+                $t = '@ChillMain/Extensions/PrintOrMessage/'.$template.'.html.twig';
+                break;
+            default:
+                $t = $template;
+        }
+        
+        return $twig->render($t, [
+            'value' => $value,
+            'message' => $message
+        ]);
+    }
+}