是否有一种简单的方法可以在查询中调用与数据库类似的东西？
“mystring”是否存在于[“string1”,“mystring”,“string2”] =>中.会回归真实
“mystring”是否存在于[“string1”,“string2”,“string3”] =>中.将返回false
解决方法
["string1","mystring","string2"].include? "mystring"
“mystring”是否存在于[“string1”,“mystring”,“string2”] =>中.会回归真实
“mystring”是否存在于[“string1”,“string2”,“string3”] =>中.将返回false
["string1","mystring","string2"].include? "mystring"
