#47: Add twig extensions to allow building of URLs from osid_Id objects.

config/services.yaml

@@ -38,6 +38,14 @@ services:
         arguments:
             $idAuthorityToShorten: '%app.osid.id.authority_to_shorten%'
 
+    App\Twig\OsidIdExtension:
+        tags:
+            - { name: 'twig.extension' }
+
+    App\Twig\NoWrapParentheticals:
+        tags:
+            - { name: 'twig.extension' }
+
     # Service aliases.
     osid.runtime:
         class: App\Service\Osid\Runtime

src/Twig/NoWrapParentheticals.php

@@ -0,0 +1,21 @@
+<?php
+
+namespace App\Twig;
+
+use Twig\Extension\AbstractExtension;
+use Twig\TwigFilter;
+
+class NoWrapParentheticals extends AbstractExtension
+{
+    public function getFilters(): array
+    {
+        return [
+            new TwigFilter('noWrapParentheticals', [$this, 'addNoWrapHtml']),
+        ];
+    }
+
+    public function addNoWrapHtml(string $input): string
+    {
+        return preg_replace('/\([^\)]+\)/', '<span style="white-space: nowrap">$0</span>', $input);
+    }
+}

src/Twig/OsidIdExtension.php

@@ -0,0 +1,40 @@
+<?php
+
+// src/Twig/AppExtension.php
+namespace App\Twig;
+
+use App\Service\Osid\IdMap;
+use Twig\Extension\AbstractExtension;
+use Twig\TwigFunction;
+
+class OsidIdExtension extends AbstractExtension
+{
+
+    /**
+     * @var \App\Service\Osid\IdMap
+     *   The IdMap service.
+     */
+    private $idMap;
+
+    /**
+     * Create a new instance of this service.
+     *
+     * @param \App\Service\Osid\IdMap
+     *   The IdMap service.
+     */
+    public function __construct(IdMap $idMap) {
+        $this->idMap = $idMap;
+    }
+
+    public function getFunctions(): array
+    {
+        return [
+            new TwigFunction('osidIdToString', [$this, 'osidIdToString']),
+        ];
+    }
+
+    public function osidIdToString(\osid_id_Id $id): string
+    {
+        return $this->idMap->toString($id);
+    }
+}