我想在Django過濾掉一些數據是這樣的:Django的:無法獲得再版類「django.db.models.query.datetimequeryset」
MyModel.objects.filter(tense="future").values_list('date_updated').datetimes('date_updateded', 'hour').annotate(updated_count=Count('name'))
我使用Pycharm進行調試,並pycharm顯示:
Django: unable to get repr for class 'django.db.models.query.datetimequeryset'
而且我得到這個在我的視圖(瀏覽器):
UnboundLocalError at /myview/
local variable 'sql' referenced before assignment
我該如何解決這個問題?
(我想基於「緊張」,得到一個小時的時間間隔內的時間,數名過濾;預期輸出是這樣的(日,updated_count))
編輯,添加回溯:
Traceback:
File "/home/ahmad/redvenv/redcloud/lib/python3.4/site-packages/django/core/handlers/base.py" in get_response 111. response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/home/ahmad/redvenv/redcloud/lib/python3.4/site-packages/django/contrib/auth/decorators.py" in _wrapped_view 21. return view_func(request, *args, **kwargs)
File "/home/ahmad/redvenv/redcloud/lib/python3.4/site-packages/django/views/decorators/csrf.py" in wrapped_view 57. return view_func(*args, **kwargs)
File "/home/ahmad/redvenv/redcloud/lib/python3.4/site-packages/django/views/generic/base.py" in view 69. return self.dispatch(request, *args, **kwargs)
File "/home/ahmad/redvenv/redcloud/lib/python3.4/site-packages/rest_framework/views.py" in dispatch 452. response = self.handle_exception(exc)
File "/home/ahmad/redvenv/redcloud/lib/python3.4/site-packages/rest_framework/views.py" in dispatch 449. response = handler(request, *args, **kwargs)
File "/home/ahmad/redvenv/redcloud/lib/python3.4/site-packages/rest_framework/decorators.py" in handler 50. return func(*args, **kwargs)
File "/home/ahmad/redvenv/redcloud/redcloud/docServer/docServer/api_views.py" in monitoring 456. data = ChartData.get_chart_data()
File "/home/ahmad/redvenv/redcloud/redcloud/docServer/docServer/api_views.py" in get_chart_data 445. data['onAudit'] = ObjectNode.on_session_data()
File "/home/ahmad/redvenv/redcloud/redcloud/docServer/docServer/models/graph.py" in on_session_data 176. return Audit.chart_data_formatter(loginCount)
File "/home/ahmad/redvenv/redcloud/redcloud/docServer/docServer/models/monitoring.py" in chart_data_formatter 34. list_of_data_items = [list(elem) for elem in chartData]
File "/home/ahmad/redvenv/redcloud/lib/python3.4/site-packages/django/db/models/query.py" in __iter__ 141. self._fetch_all()
File "/home/ahmad/redvenv/redcloud/lib/python3.4/site-packages/django/db/models/query.py" in _fetch_all 966. self._result_cache = list(self.iterator())
File "/home/ahmad/redvenv/redcloud/lib/python3.4/site-packages/django/db/models/sql/compiler.py" in results_iter 1130. for rows in self.execute_sql(MULTI):
File "/home/ahmad/redvenv/redcloud/lib/python3.4/site-packages/django/db/models/sql/compiler.py" in execute_sql 775. sql, params = self.as_sql()
File "/home/ahmad/redvenv/redcloud/lib/python3.4/site-packages/django/db/models/sql/compiler.py" in as_sql 133. grouping, gb_params = self.get_grouping(having_group_by, ordering_group_by)
File "/home/ahmad/redvenv/redcloud/lib/python3.4/site-packages/django/db/models/sql/compiler.py" in get_grouping 586. if sql not in seen:
Exception Type: UnboundLocalError at /myview/
Exception Value: local variable 'sql' referenced before assignment
請顯示完整的回溯。 – Alasdair
@Alasdair,已更新。 –