misc: fix |count filter for None values (#53924)
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@ -2565,6 +2565,10 @@ def test_lazy_formdata_count_as_len_filter(pub):
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tmpl = Template('{{ form_var_value|count }}')
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assert tmpl.render(context) == '4'
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tmpl = Template('{{ form_var_value|count }}')
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assert tmpl.render({}) == '0'
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assert tmpl.render({'form_var_value': None}) == '0'
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def test_rounding_and_abs_conditions_django(pub, variable_test_data):
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for true_condition_value in (
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@ -687,6 +687,8 @@ def filter_value(queryset, value):
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def count(queryset):
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if hasattr(queryset, 'get_value'):
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queryset = queryset.get_value() # unlazy
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if queryset is None:
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return 0
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return len(queryset)
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