Updating ruby on rails
Newly updated for Rails 5, the Ruby on Rails Tutorial book and screencast series teach you how to develop and deploy real, industrial-strength web applications with Ruby on Rails, the open-source web framework that powers top websites such as Twitter, Hulu, Git Hub, and the Yellow Pages.The Ruby on Rails Tutorial book is available for free online and is available for purchase as an ebook (PDF, EPUB, and MOBI formats).When using class names composed of two or more words, the model class name should follow the Ruby conventions, using the Camel Case form, while the table name must contain the words separated by underscores.Examples: is a reserved keyword used to designate a table using Single Table Inheritance (STI).Active Record was described by Martin Fowler in his book .In Active Record, objects carry both persistent data and behavior which operates on that data.Validation is a very important issue to consider when persisting to the database, so the methods You can learn more about validations in the Active Record Validations guide.Active Record callbacks allow you to attach code to certain events in the life-cycle of your models.
The Rails pluralization mechanisms are very powerful, being capable of pluralizing (and singularizing) both regular and irregular words.
The companion screencast series includes 14 individual lessons, one for each chapter of the Ruby on Rails Tutorial book.
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Active Record facilitates the creation and use of business objects whose data requires persistent storage to a database.
It is an implementation of the Active Record pattern which itself is a description of an Object Relational Mapping system.
Rails provides a domain-specific language for managing a database schema called migrations.