在 Ruby 中使用正则表达式如果条件
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Using regex in Ruby if condition
提问by Exupery
I'm trying to use regex as the conditional in a Ruby (1.9.2) if statement but it keeps returning true even when the regex evaluates to nil
我试图在 Ruby (1.9.2) if 语句中使用正则表达式作为条件，但即使正则表达式计算为 nil，它也会一直返回 true
if (params[:test] =~ /foo/)
return "match"
else
return "no match"
end
The above returns "match" even when Rails.logger.info(params[:test])shows test as set to "bar"
即使Rails.logger.info(params[:test])显示测试设置为，上面也会返回“匹配”"bar"
回答by Zed
if params[:test] =~ /foo/
# Successful match
else
# Match attempt failed
end
Works for me. Debug what is in params[:test]
对我来说有效。调试里面的东西params[:test]
