Django的：無法獲得再版類「django.db.models.query.datetimequeryset」

Question

我想在Django過濾掉一些數據是這樣的：

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 

Answer 1

我認爲你碰到this bug，它在Django 1.8中修復。