Remove temporary columns from results

src/Builder.php

@@ -28,4 +28,33 @@ public function groupLimit($value, $column)
 
         return $this;
     }
+
+    /**
+     * Execute the query as a "select" statement.
+     *
+     * @param  array  $columns
+     * @return \Illuminate\Support\Collection
+     */
+    public function get($columns = ['*'])
+    {
+        $results = parent::get($columns);
+
+        if (! $this->groupLimit) {
+            return $results;
+        }
+
+        $column = last(explode('.', $this->groupLimit['column']));
+
+        $keys = [
+            'laravel_row',
+            '@laravel_partition := '.$this->grammar->wrap($column),
+            '@laravel_partition := '.$this->grammar->wrap('pivot_'.$column),
+        ];
+
+        foreach ($results as $result) {
+            unset($result->{$keys[0]}, $result->{$keys[1]}, $result->{$keys[2]});
+        }
+
+        return $results;
+    }
 }

tests/HasEagerLimitTest.php

@@ -14,6 +14,8 @@ public function testHasOne()
 
         $this->assertEquals(3, $users[0]->post->id);
         $this->assertEquals(6, $users[1]->post->id);
+        $this->assertArrayNotHasKey('laravel_row', $users[0]->post);
+        $this->assertArrayNotHasKey('@laravel_partition := `user_id`', $users[0]->post);
     }
 
     public function testMorphOne()
@@ -54,6 +56,7 @@ public function testBelongsToMany()
 
         $this->assertEquals([3, 2], $users[0]->roles->pluck('id')->all());
         $this->assertEquals([6, 5], $users[1]->roles->pluck('id')->all());
+        $this->assertArrayNotHasKey('@laravel_partition := `pivot_user_id`', $users[0]->roles[0]);
     }
 
     public function testMorphToMany()