Merge pull request #6 from takeit/docs

added twig extension

Author: takeit

Resources/config/services.yml

@@ -3,6 +3,7 @@ parameters:
     takeit_amp_html.amp_controller.class: Takeit\Bundle\AmpHtmlBundle\Controller\AmpViewController
     takeit_amp_html.routing_loader.class: Takeit\Bundle\AmpHtmlBundle\Routing\Loader\AmpLoader
     takeit_amp_html.param_converter.resolve_entity_converter.class: Takeit\Bundle\AmpHtmlBundle\Request\ParamConverter\ResolveEntityParamConverter
+    takeit_amp_html.twig_extension.class: Takeit\Bundle\AmpHtmlBundle\Twig\AmpExtension
 
 services:
     takeit_amp_html.amp_subscriber:
@@ -30,3 +31,10 @@ services:
         arguments:
             - {'Takeit\Bundle\AmpHtmlBundle\Model\AmpInterface': "%takeit_amp_html.configuration.model.class%"}
             - "@?doctrine"
+
+    takeit_amp_html.twig_extension:
+        class: "%takeit_amp_html.twig_extension.class%"
+        public: false
+        arguments: ['%takeit_amp_html.configuration.routing%']
+        tags:
+            - { name: twig.extension }

Twig/AmpExtension.php

@@ -0,0 +1,61 @@
+<?php
+
+/*
+ * This file is part of the takeit/AmpHtmlBundle package.
+ *
+ * (c) Rafał Muszyński <rmuszynski1@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Takeit\Bundle\AmpHtmlBundle\Twig;
+
+/**
+ * AMP Twig Extension.
+ */
+class AmpExtension extends \Twig_Extension
+{
+    /**
+     * @var array
+     */
+    private $config;
+
+    /**
+     * @param array $config
+     */
+    public function __construct(array $config)
+    {
+        $this->config = $config;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getFilters()
+    {
+        return array(
+            new \Twig_SimpleFilter('amp_path', array($this, 'ampFilter')),
+        );
+    }
+
+    /**
+     * Returns an AMP path.
+     *
+     * @param $path Path
+     *
+     * @return string
+     */
+    public function ampFilter($path)
+    {
+        return $this->config['prefix'].$path;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getName()
+    {
+        return 'takeit_amp_extension';
+    }
+}

spec/Twig/AmpExtensionSpec.php

@@ -0,0 +1,38 @@
+<?php
+
+/*
+ * This file is part of the takeit/AmpHtmlBundle package.
+ *
+ * (c) Rafał Muszyński <rmuszynski1@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace spec\Takeit\Bundle\AmpHtmlBundle\Twig;
+
+use PhpSpec\ObjectBehavior;
+use Takeit\Bundle\AmpHtmlBundle\Twig\AmpExtension;
+
+/**
+ * @mixin AmpExtension
+ *
+ * @author Rafał Muszyński <rmuszynski1@gmail.com>
+ */
+class AmpExtensionSpec extends ObjectBehavior
+{
+    function let()
+    {
+        $this->beConstructedWith(['prefix' => '/some/prefix']);
+    }
+
+    function it_is_initializable()
+    {
+        $this->shouldHaveType(AmpExtension::class);
+    }
+
+    function it_is_a_twig_extension()
+    {
+        $this->shouldHaveType('Twig_Extension');
+    }
+}