摘要：
http://guides.rubyonrails.org/action_controller_overview.html The flash is a special part of the session which is cleared with each request. This mean 阅读全文
摘要：
今天存储数据的时候报错，发现是3435065640超出了常规int的存储长度， RangeError (3435065640 is out of range for ActiveRecord::Type::Integer with limit 4) http://dev.mysql.com/doc/ 阅读全文
摘要：
When you first started coding, errors were probably the last thing you wanted to see. After all, it’s not a far stretch to associate “error” with “I m 阅读全文
摘要：
Often, classes will have shared characteristics with other classes. Rewriting the same methods for each class over and over again can be pretty cumber 阅读全文
摘要：
When calling an instance method like withdraw_securely, the syntax generally looks something like this: One would therefore think it’s safe to assume 阅读全文
摘要：
https://www.digitalocean.com/community/tutorials/how-to-install-linux-nginx-mysql-php-lemp-stack-on-debian-7 https://www.digitalocean.com/community/tu 阅读全文
摘要：
# cat /etc/issue Debian GNU/Linux 8 \n \l #apt-get update 阅读全文
摘要：
http://guides.rubyonrails.org/association_basics.html#polymorphic-associations http://guides.rubyonrails.org/association_basics.html#polymorphic-assoc 阅读全文
摘要：
Your latest client is a bank, and they’ve tasked you with requiring customers to enter their password in order to make withdrawals. Currently, this is 阅读全文
摘要：
By encapsulating all the logic for an object, whether it’s a Dog or a User or an IceCreamShop, you are able to keep all of the logic and responsibilit 阅读全文