Rails ActiveRecord查询，其中“”，“ _”和“-”可互换
[英]Rails ActiveRecord query where “ ”, “_”, and “-” are interchangable
问题描述
My goal is to write a Model.find_by_name("foo-bar"), would return a record in the database with the name "foo bar"). 
我的目标是编写一个Model.find_by_name（“ foo-bar”），将在数据库中返回一个名称为“ foo bar”）的记录。 I'm struggling to find any information on how this might be accomplished. 我正在努力寻找有关如何实现此目标的任何信息。 I'm using postgresql. 我正在使用postgresql。 Thanks! 谢谢！
1 个解决方案
解决方案1
1 已采纳 2013-04-07 03:48:42
You could try using regular expressions to do this: 您可以尝试使用正则表达式来执行此操作：
to_match = "foo_bar".sub(/[ \-\_]/, '[ \-\_]')
Model.where("'name' ~ ?", to_match)
At least that's the general idea. 至少那是一般的想法。 These kinds of searches will be a lot slower on large tables. 在大型表上，这类搜索会慢很多。
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