Rails查询日期

Question

我看到heroku中的当前错误（谁正在使用pgsql）

2011-08-16T23:18:58+00:00 app[web.1]: ActiveRecord::StatementInvalid (PGError: ERROR:  syntax error at or near "end"
2011-08-16T23:18:58+00:00 app[web.1]: LINE 1: ...".* FROM "deals" WHERE (start <= '2011-08-16' AND end > '201...
2011-08-16T23:18:58+00:00 app[web.1]:                                                              ^
2011-08-16T23:18:58+00:00 app[web.1]: : SELECT "deals".* FROM "deals" WHERE (start <= '2011-08-16' AND end > '2011-08-16')):
2011-08-16T23:18:58+00:00 app[web.1]:   app/helpers/deals_helper.rb:7:in `currently_active'
2011-08-16T23:18:58+00:00 app[web.1]:   app/controllers/users_controller.rb:11:in `home'

这是由

生成的

d = Deal.where(["start <= ? AND end > ?", today, today])

我仍然想继续在sqlite3上开发。但我希望这可以在pgsql上运行。有任何想法吗？

Answer 1

试试这个：

d = Deal.where(["start <= '?' AND end > '?'", today, today])

Answer 2

我想是的：

d = Deal.where(["'start' <= ? AND 'end' > ?", today, today])

Answer 3

???

d = Deal.where(['start <= ? AND end > ?', today, today])