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Fix a bug filtering by hash key if indexes hash key is the dicsriminator #1001

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Fix a bug filtering by hash key if indexes hash key is the dicsriminator #1001

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3 changes: 2 additions & 1 deletion pynamodb/models.py
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Original file line number Diff line number Diff line change
Expand Up @@ -665,7 +665,8 @@ def query(
# If this class has a discriminator attribute, filter the query to only return instances of this class.
discriminator_attr = cls._get_discriminator_attribute()
if discriminator_attr:
filter_condition &= discriminator_attr.is_in(*discriminator_attr.get_registered_subclasses(cls))
if index_name and discriminator_attr.attr_name != cls._indexes[index_name]._hash_key_attribute().attr_name: # Don't filter if discriminator is indexes hash key.
filter_condition &= discriminator_attr.is_in(*discriminator_attr.get_registered_subclasses(cls))

if page_size is None:
page_size = limit
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