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Code Issues 30 Releases Wiki Activity

Fixed #34518 -- Fixed crash of random() template filter with an empty list.

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David Sanders 2023-04-26 22:17:57 +10:00 committed by GitHub
parent 18a7f2c711
commit 7d0e566208
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2 changed files with 9 additions and 1 deletions
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5
django/template/defaultfilters.py
View File

@ -628,7 +628,10 @@ def length_is(value, arg):
@register.filter(is_safe=True)
def random(value):
"""Return a random item from the list."""
return random_module.choice(value)
try:
return random_module.choice(value)
except IndexError:
return ""
@register.filter("slice", is_safe=True)

5
tests/template_tests/filter_tests/test_random.py
View File

@ -24,3 +24,8 @@ class RandomTests(SimpleTestCase):
"random02", {"a": ["a&b", "a&b"], "b": [mark_safe("a&b"), mark_safe("a&b")]}
)
self.assertEqual(output, "a&b a&b")
@setup({"empty_list": "{{ list|random }}"})
def test_empty_list(self):
output = self.engine.render_to_string("empty_list", {"list": []})
self.assertEqual(output, "")