From 0637df2aa8181fdee4ffab8cbeb3cd8992977580 Mon Sep 17 00:00:00 2001
From: Jonas Staudenmeir <mail@jonas-staudenmeir.de>
Date: Sat, 26 May 2018 00:59:59 +0200
Subject: [PATCH] Fix loadMissing() relationship parsing

---
 src/Illuminate/Database/Eloquent/Collection.php          | 9 ++++++++-
 .../Database/EloquentCollectionLoadMissingTest.php       | 4 ++--
 2 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/src/Illuminate/Database/Eloquent/Collection.php b/src/Illuminate/Database/Eloquent/Collection.php
index 4114d8afe3d6..ad2a7a115c57 100755
--- a/src/Illuminate/Database/Eloquent/Collection.php
+++ b/src/Illuminate/Database/Eloquent/Collection.php
@@ -4,6 +4,7 @@
 
 use LogicException;
 use Illuminate\Support\Arr;
+use Illuminate\Support\Str;
 use Illuminate\Contracts\Support\Arrayable;
 use Illuminate\Database\Eloquent\Relations\Pivot;
 use Illuminate\Contracts\Queue\QueueableCollection;
@@ -79,7 +80,13 @@ public function loadMissing($relations)
                 $key = $value;
             }
 
-            $path = array_combine($segments = explode('.', $key), $segments);
+            $segments = explode('.', explode(':', $key)[0]);
+
+            if (Str::contains($key, ':')) {
+                $segments[count($segments) - 1] .= ':'.explode(':', $key)[1];
+            }
+
+            $path = array_combine($segments, $segments);
 
             if (is_callable($value)) {
                 $path[end($segments)] = $value;
diff --git a/tests/Integration/Database/EloquentCollectionLoadMissingTest.php b/tests/Integration/Database/EloquentCollectionLoadMissingTest.php
index 93942538b0a4..b04d832bd01b 100644
--- a/tests/Integration/Database/EloquentCollectionLoadMissingTest.php
+++ b/tests/Integration/Database/EloquentCollectionLoadMissingTest.php
@@ -52,12 +52,12 @@ public function testLoadMissing()
 
         \DB::enableQueryLog();
 
-        $posts->loadMissing('comments.parent:id.revisions', 'user:id');
+        $posts->loadMissing('comments.parent.revisions:revisions.comment_id', 'user:id');
 
         $this->assertCount(2, \DB::getQueryLog());
         $this->assertTrue($posts[0]->comments[0]->relationLoaded('parent'));
         $this->assertTrue($posts[0]->comments[1]->parent->relationLoaded('revisions'));
-        $this->assertFalse(array_key_exists('post_id', $posts[0]->comments[1]->parent->getAttributes()));
+        $this->assertFalse(array_key_exists('id', $posts[0]->comments[1]->parent->revisions[0]->getAttributes()));
     }
 
     public function testLoadMissingWithClosure()