摘要：
另外一个：=====================2){this.value=this.value.split('.')[0]+'.'+this.value.split('.')[1]}"> "return onlyNumber(event);", :style => "ime-mode:dis... 阅读全文
摘要：
首先看 transaction 方法ActiveRecord::TransactionsPublicClassmethods #Filevendor/rails/activerecord/lib/active_record/transactions.rb,line187 187:deftransaction(&block) 188:self.class.transaction(&block) 189:end 可以看出他是调用类方法，类方法代码如下：#Filevendor/rails/activerecord/lib/active_record/transactions.rb,l 阅读全文