Error typo, I creates a new thread with the good description ;-) Le mardi 26 juin 2018 16:35:27 UTC+2, Nelson Varela a écrit : > > The following class is kinda weird: > class DataModel(DataModel): > > A class which inherits itself??? > > > > On Tuesday, June 26, 2018 at 11:31:24 AM UTC+2, [email protected] wrote: >> >> Hi all :-) >> >> I'd like to archive some data. >> >> I did that : >> >> class AbstractDataModel(models.Model): >> xxx >> >> class Meta: >> abstract = True >> >> >> def __iter__(self): >> >> return iter([self.xxx, self.yyy, self.zzz, self.aaa, >> self.qqq, self.mode_bbb]) >> >> >> class DataModel(DataModel): >> >> pass >> >> >> class DataModelArchive(DataModel): >> # >> https://stackoverflow.com/questions/21699707/python-how-to-copy-all-attibutes-from-base-class-to-derived-one >> def __init__(self, source=None): >> if source is not None: >> self.__dict__.update(source.__dict__) >> >> >> But when I want to access data in DataModelArchive, like >> DataModelArchive.objects.all() for example, >> I get >> >> Traceback (most recent call last): >> File "/home/.../tests.py", line 1090, in test_archive >> print(DataModelArchive.objects.all()) >> File >> "/home/.../venv/lib/python3.6/site-packages/django/db/models/query.py", >> line 248, in __repr__ >> data = list(self[:REPR_OUTPUT_SIZE + 1]) >> File >> "/home/.../venv/lib/python3.6/site-packages/django/db/models/query.py", >> line 272, in __iter__ >> self._fetch_all() >> File >> "/home/.../venv/lib/python3.6/site-packages/django/db/models/query.py", >> line 1179, in _fetch_all >> self._result_cache = list(self._iterable_class(self)) >> File >> "/home/.../venv/lib/python3.6/site-packages/django/db/models/query.py", >> line 63, in __iter__ >> obj = model_cls.from_db(db, init_list, row[model_fields_start: >> model_fields_end]) >> File "/home/.../lib/python3.6/site-packages/django/db/models/base.py", >> line 507, in from_db >> new = cls(*values) >> TypeError: __init__() takes from 1 to 2 positional arguments but 11 were >> given >> >> What am I doing wrong ? >> >> Thx >> >>
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