1
返回我有这个疑问,当在MySQL命令行运行给出了正确的结果,但不是在通过铁轨多列不由的ActiveRecord在Rails3中
查询执行:
SELECT t1.id, t1.event_id, t2.content, t2.created_at, t3.title FROM t1
INNER JOIN t2 ON t2.id = t1.event_id
INNER JOIN t3 ON t3.id = t2.id
WHERE (t1.id in (SELECT id FROM t4 WHERE attr = 20))
ORDER BY t1.created_at DESC
LIMIT 15
我用
t1.find_by_sql "<above_sql_query>"
但它只返回那些涉及t1的列。其结果是一个数组:
[#<t1 id: 3, event_id: 3>]
我也试图与
t1.find(:all, :select => "<select attributes as above>", :joins => "as above", :conditions => "as above", :limit => 15, :order => "t1.created_at DESC")
,但仍然给出了同样的结果,只返回关于T1的属性。请帮助我找到执行该命令的最佳方式。
感谢,公关