Perish

摘要： 首先是不为空validates :name,presence:{message:'blank is not allowed'}唯一性：validates :name,uniqueness:{message:'already exist!',case_sensitive: false}#case_sensitive区分大小写长度：validates :name,length:{in: 6..20,message:'must in 6-20 byte'} 格式：validates :name,format:{with: /[a-z]/,message 阅读全文