Entire Site
Free Trial
Safari Books Online is a digital library providing on-demand subscription access to thousands of learning resources.
- Create BookmarkCreate Bookmark
- Create Note or TagCreate Note or Tag
- DownloadDownload
- PrintPrint
Chapter 7. Active Record Associations > The has_many Association
7.4. The has_many Association
Just like it sounds, the has_many association allows you to define a relationship in which one model has many other models that belong to it. The sheer readability of code constructs such as has_many is a major reason that people fall in love with Rails.
The has_many class method is often used without additional options. If Rails can guess the type of class in the relationship from the name of the association, no additional configuration is necessary. This bit of code should look familiar by now:
