From c4cd355f5b3802b8c1348bb205f5e7bc61b1b311 Mon Sep 17 00:00:00 2001
From: Matias Griese <matias@kunena.org>
Date: Thu, 20 Aug 2015 12:23:41 +0300
Subject: [PATCH] Add support for extending blueprints with its parent (single
 level only)

---
 system/src/Grav/Common/Data/Blueprints.php | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/system/src/Grav/Common/Data/Blueprints.php b/system/src/Grav/Common/Data/Blueprints.php
index 03db82263..629c089ec 100644
--- a/system/src/Grav/Common/Data/Blueprints.php
+++ b/system/src/Grav/Common/Data/Blueprints.php
@@ -45,7 +45,8 @@ class Blueprints
                     $grav = static::getGrav();
                     /** @var UniformResourceLocator $locator */
                     $locator = $grav['locator'];
-                    $filename = $locator($filename);
+                    $parents = $locator->findResources($filename);
+                    $filename = array_shift($parents);
                 }
             } else {
                 $filename = isset($this->search[$type]) ? $this->search[$type] : '';
@@ -73,6 +74,15 @@ class Blueprints
 
                     if (!$extendType) {
                         continue;
+                    } elseif ($extendType === '@parent') {
+                        $parentFile = array_shift($parents);
+                        if (!$parentFile || !is_file($parentFile)) {
+                            continue;
+                        }
+                        $blueprints = CompiledYamlFile::instance($parentFile)->content();
+                        $parent = new Blueprint($type.'-parent', $blueprints, $this);
+                        $blueprint->extend($parent);
+                        continue;
                     }
 
                     $context = is_string($extendConfig) || empty($extendConfig['context']) ? $this : new self(self::getGrav()['locator']->findResource($extendConfig['context']));