At the Forge - Working with ActiveRecord
Although constraints in our database ensure that the data will always be valid, we generally want to perform such validation at the application level. Unfortunately, doing so is tricky or time consuming in many languages. ActiveRecord, the object-relational mapper at the heart of Ruby on Rails, makes it relatively easy to ensure that your users never have to see a database error. It comes with a number of validators, as well as an infrastructure for creating custom ones. Moreover, it comes with a number of routines that let us describe the relationships among different tables. With some small modifications to the controllers, views and models, we are able to create a custom application with valid data quickly.
Resources for this article: /article/8580.
Webinar: 8 Signs You’re Beyond Cron
11am CDT, April 29th
Join Linux Journal and Pat Cameron, Director of Automation Technology at HelpSystems, as they discuss the eight primary advantages of moving beyond cron job scheduling. In this webinar, you’ll learn about integrating cron with an enterprise scheduler.Join us!
- Not So Dynamic Updates
- New Products
- Users, Permissions and Multitenant Sites
- Security in Three Ds: Detect, Decide and Deny
- Flexible Access Control with Squid Proxy
- Tighten Up SSH
- Solving ODEs on Linux
- Non-Linux FOSS: MenuMeters
- DevOps: Everything You Need to Know
- diff -u: What's New in Kernel Development