admin: fix upgrading deletion of tasks when listing
Signed-off-by: Jens Langhammer <jens.langhammer@beryju.org>
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@ -37,7 +37,11 @@ class TaskSerializer(PassiveSerializer):
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try:
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return super().to_representation(instance)
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except AttributeError:
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self.instance.delete()
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if isinstance(self.instance, list):
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for inst in self.instance:
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inst.delete()
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else:
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self.instance.delete()
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return {}
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