From 226dc8a6def7e40c23949d07e9e44c26176c1ea0 Mon Sep 17 00:00:00 2001
From: Tom Bamford <tom@halfmesh.com>
Date: Mon, 19 Mar 2018 23:00:28 +0100
Subject: [PATCH 1/3] Creates add_attribute twig function

Replicates the Drupal twig function create_attribute for patternlab
https://www.drupal.org/docs/8/theming/twig/functions-in-twig-templates#create_attribute
---
 dist/functions/create_attribute.function.php | 12 ++++++++++++
 1 file changed, 12 insertions(+)
 create mode 100644 dist/functions/create_attribute.function.php

diff --git a/dist/functions/create_attribute.function.php b/dist/functions/create_attribute.function.php
new file mode 100644
index 0000000..72e0874
--- /dev/null
+++ b/dist/functions/create_attribute.function.php
@@ -0,0 +1,12 @@
+<?php
+
+$function = new Twig_SimpleFunction(
+  'create_attribute',
+  function ($attributes = []) {
+    if (isset($attributes) && isset($attributes['class'])) {
+      $classes = join(' ', $attributes['class']);
+      return ' class="' . $classes .'"';
+    }
+  },
+  array('is_safe' => array('html'))
+);
\ No newline at end of file

From ff39b8fe14ce78afd08154fa2ad8dfb407b5cb42 Mon Sep 17 00:00:00 2001
From: Tom Bamford <tom@halfmesh.com>
Date: Tue, 20 Mar 2018 13:07:59 +0100
Subject: [PATCH 2/3] Loops through each attribute

---
 dist/functions/create_attribute.function.php | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/dist/functions/create_attribute.function.php b/dist/functions/create_attribute.function.php
index 72e0874..a13b07f 100644
--- a/dist/functions/create_attribute.function.php
+++ b/dist/functions/create_attribute.function.php
@@ -3,9 +3,8 @@
 $function = new Twig_SimpleFunction(
   'create_attribute',
   function ($attributes = []) {
-    if (isset($attributes) && isset($attributes['class'])) {
-      $classes = join(' ', $attributes['class']);
-      return ' class="' . $classes .'"';
+    foreach ($attributes as $key => $value) {
+      print ' ' . $key . '="' . join(' ', $value) . '"';
     }
   },
   array('is_safe' => array('html'))

From 287b04b20e091cd17b58257e77a4908026c14b2b Mon Sep 17 00:00:00 2001
From: Kent Richards <kent@kentrichards.net>
Date: Sun, 29 Dec 2019 21:21:43 -0800
Subject: [PATCH 3/3] Use \Drupal\Core\Template\Attribute for create_attribute

Uses `\Drupal\Core\Template\Attribute` as the basis for
`create_attribute()`.

See: https://github.com/pattern-lab/plugin-drupal-twig-components/pull/10#issuecomment-403172065
---
 dist/functions/create_attribute.function.php | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

diff --git a/dist/functions/create_attribute.function.php b/dist/functions/create_attribute.function.php
index a13b07f..addc45a 100644
--- a/dist/functions/create_attribute.function.php
+++ b/dist/functions/create_attribute.function.php
@@ -1,11 +1,11 @@
 <?php
+/**
+ * @file
+ * Add "create_attribute" function for Pattern Lab.
+ */
 
-$function = new Twig_SimpleFunction(
-  'create_attribute',
-  function ($attributes = []) {
-    foreach ($attributes as $key => $value) {
-      print ' ' . $key . '="' . join(' ', $value) . '"';
-    }
-  },
-  array('is_safe' => array('html'))
-);
\ No newline at end of file
+use \Drupal\Core\Template\Attribute;
+
+$function = new Twig_SimpleFunction('create_attribute', function ($attributes = []) {
+  return new Attribute($attributes);
+});