[英]'ManyToManyDescriptor' object has no attribute 'add'
ranges = list(ranges)
report.date_from = form.instance.date_from
report.date_to = form.instance.date_to
report.assigned_range.add(ranges)
我收到错误
AttributeError at /create_stock_turnover_report
'ManyToManyDescriptor' object has no attribute 'add'
但我不明白为什么我的数据库模型是这样的
assigned_range = models.ManyToManyField(to=assigned_range, blank=True, null=True)
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