ruby-on-rails – Date.today和Date.yesterday是相同的但不在控

参见英文答案 > Why does Date.yesterday counts as Date.today also?????????????????????????????????????2个
我已经查看了有关此主题的其他问题但似乎与我遇到的内容不相符.我有2个范围从今天和昨天查找记录,但它们都返回完全相同的记录.

scope :new_memberships_cash_today,->() {
where(:start_date => Date.today)
joins(:membership).sum('memberships.cost')}

scope :new_memberships_cash_yesterday,->() {
where(:start_date => Date.yesterday)
joins(:membership).sum('memberships.cost')}

在控制台Date.today和Date.yesterday中返回不同的值(即今天和昨天)

列start_date是一个日期字段,所以这应该工作不应该吗？以前有人遇到过这个吗？

谢谢