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huacnlee/safe_login.rb

Created February 23, 2011 15:21
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去掉字符里面的非法字符，用于处理用户名 a-z 0-9 - _
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safe_login.rb
def safe_login(str)
str.gsub(/[^a-z0-9\-_]/,'')
end
# Test
ruby-1.9.2-p0 > safe_login("asdlg1-24_1(*&(sdgsdg")
=> "asdlg1-24_1sdgsdg"
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