Fixes #15608: Avoid caching values of null fields in search index
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@ -59,9 +59,10 @@ class SearchIndex:
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@staticmethod
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def get_field_value(instance, field_name):
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"""
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Return the value of the specified model field as a string.
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Return the value of the specified model field as a string (or None).
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"""
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return str(getattr(instance, field_name))
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if value := getattr(instance, field_name):
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return str(value)
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@classmethod
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def get_category(cls):
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