NameError at week/2012/48/ 全局名称 '_get_next_prev_month' 未定义答案

【问题标题】：NameError at week/2012/48/ global name '_get_next_prev_month' is not definedNameError at week/2012/48/ 全局名称 '_get_next_prev_month' 未定义
【发布时间】：2012-11-13 12:51:45
【问题描述】：

我正在尝试使用 weekarchive 视图，但出现以下错误：

NameError at /archive/week/2012/48/
global name '_get_next_prev_month' is not defined 
Request Method: GET
Request URL:    http://localhost:8000/archive/week/2012/48/
Django Version: 1.4.2
Exception Type: NameError
Exception Value:    
global name '_get_next_prev_month' is not defined
Exception Location: /job/views.py in get_next_week, line  79
Python Executable:  /jobenv/bin/python
Python Version: 2.7.3

这是我的视图继承自的子类：

class BetterWeekArchiveView(WeekArchiveView):

def get_next_week(self, date):
    """
    Get the next valid week.
    """
    from datetime import timedelta
    next = date + timedelta(days=7)
    return _get_next_prev_month(self, next, is_previous=False, use_first_day=False)

def get_previous_week(self, date):
    """
    Get the previous valid week.
    """
    from datetime import timedelta
    prev = date - timedelta(days=7)
    return _get_next_prev_month(self, prev, is_previous=True, use_first_day=False)

def get_dated_items(self):
    """
    Return (date_list, items, extra_context) for this request.
    Inject next_week and previous_week into extra_context.
    """
    result = super(BetterWeekArchiveView, self).get_dated_items()
    extra_context = result[2]
    date = extra_context['week']

    extra_context.update({
        'next_week': self.get_next_week(date),
        'previous_week': self.get_previous_week(date),
    })
    return result

这是视图：

class week_archive(BetterWeekArchiveView):
   model=Job
   allow_future =True
   allow_empty=True
   paginate_by=12
   date_field='datemade'
   template_name='task/task_archive_week'

   def get_queryset(self):
       return Job.objects.filter(author=self.request.user)

我从How do I paginate WeekArchiveView? 得到了这个 BetterWeekArchiveView()

我做错了什么？

【问题讨论】：

标签： python django django-templates python-2.7 django-views

【解决方案1】：

似乎我错过了导入，我在源代码中找到了 _get_next_prev_month 的定义：Django-source-file 这应该是一个最小的工作示例：

class BetterWeekArchiveView(WeekArchiveView):
    from django.views.generic.dates import _get_next_prev_month
    def get_next_week(self, date):
       """
        Get the next valid week.
        """
        from datetime import timedelta
        next = date + timedelta(days=7)
        return _get_next_prev_month(self, next, is_previous=False, use_first_day=False)

    def get_previous_week(self, date):
       """
       Get the previous valid week.
       """
       from datetime import timedelta
       prev = date - timedelta(days=7)
       return _get_next_prev_month(self, prev, is_previous=True, use_first_day=False)

    def get_dated_items(self):
        """
        Return (date_list, items, extra_context) for this request.
        Inject next_week and previous_week into extra_context.
        """
        result = super(BetterWeekArchiveView, self).get_dated_items()
        extra_context = result[2]
        date = extra_context['week']

        extra_context.update({
         'next_week': self.get_next_week(date),
          'previous_week': self.get_previous_week(date),
          })

         return result

【讨论】：