bug #2999 Fix support for IteratorAggregate in the filter filter (fabpot)

This PR was merged into the 1.x branch.

Discussion
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Fix support for IteratorAggregate in the filter filter

Commits
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084be27 fixed support for IteratorAggregate in the filter filter

Author: fabpot

src/Extension/CoreExtension.php

@@ -1696,6 +1696,10 @@ function twig_array_filter($array, $arrow)
         return array_filter($array, $arrow);
     }
 
+    while ($array instanceof \IteratorAggregate) {
+        $array = $array->getIterator();
+    }
+
     return new \CallbackFilterIterator($array, $arrow);
 }
 

test/Twig/Tests/Fixtures/filters/filter.test

@@ -18,8 +18,15 @@
 {% for k, v in it|filter((v) => v > offset) -%}
     {{ k }} = {{ v }}
 {% endfor %}
+
+{% for k, v in ita|filter(v => v > offset) -%}
+    {{ k }} = {{ v }}
+{% endfor %}
 --DATA--
-return ['it' => new \ArrayIterator(['a' => 1, 'b' => 2, 'c' => 5, 'd' => 8])]
+return [
+    'it' => new \ArrayIterator(['a' => 1, 'b' => 2, 'c' => 5, 'd' => 8]),
+    'ita' => new IteratorAggregateStub(['a' => 1, 'b' => 2, 'c' => 5, 'd' => 8]),
+]
 --EXPECT--
 1 = 5
 3 = 4
@@ -34,3 +41,6 @@ d = 8
 
 c = 5
 d = 8
+
+c = 5
+d = 8