Adds chunk method to query builder to parse sorts (spatie#299)

This PR adds the chunk function to ensure parse sorts before enforceOrderBy method is executed on chunk queries.

Author: marcoocram

src/QueryBuilder.php

@@ -101,6 +101,13 @@ public function simplePaginate($perPage = null, $columns = ['*'], $pageName = 'p
         return parent::simplePaginate($perPage, $columns, $pageName, $page);
     }
 
+    public function chunk($count, callable $callback)
+    {
+        $this->parseSorts();
+
+        return parent::chunk($count, $callback);
+    }
+
     /**
      * Add the model, scopes, eager loaded relationships, local macro's and onDelete callback
      * from the $builder to this query builder.

tests/SortTest.php

@@ -109,6 +109,18 @@ public function it_can_sort_a_query_with_custom_select()
         $this->assertQueryExecuted('select "id", "name" from "test_models" order by "id" desc limit 15 offset 0');
     }
 
+    /** @test */
+    public function it_can_sort_a_chunk_query()
+    {
+        $this
+            ->createQueryFromSortRequest('-name')
+            ->chunk(100, function ($models) {
+                //
+            });
+
+        $this->assertQueryExecuted('select * from "test_models" order by "name" desc limit 100 offset 0');
+    }
+
     /** @test */
     public function it_can_guard_against_sorts_that_are_not_allowed()
     {