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username = serializers.CharField(source='user__username', readonly=True) - так пробовал ?The serializer field might be named incorrectly and not match any attribute or key on the `User` instance.
Original exception text was: 'User' object has no attribute 'user__username'.Z
YYYY-MM-DD HH:mmDT
The serializer field might be named incorrectly and not match any attribute or key on the `User` instance.
Original exception text was: 'User' object has no attribute 'user__username'.DT
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username = serializers.CharField(source='user__username', readonly=True) - так пробовал ?source='user.username'DT
source='user.username'I
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