Hi, update_or_create adds auto_now fields to the update_fields passed to the model save in case of an update. However, it also adds any field overriding Field.pre_save() method. As a consequence any DateField will be added to update_field even if it is not an auto_now. Should the addition of fields to the update_fields be more restrictive and be limited to the auto_now and auto_now_add fields?
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