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Model Name in URL (revised)
A model's ID in the URL is not very helpful to the user. Consider adding the name which can also improve SEO. Learn how to override to_param, add a slug attribute, and make a catch all route for deep nesting.
(9 minutes)
Guest User Record
Instead of presenting a sign up form to the user, consider creating a temporary guest record so the user can try out the application without filling in their information up front. They can then become a permanent member afterwards.
(9 minutes)
A Tour of State Machines
Here I show how three popular state machine gems can be used to clean up a list of boolean/datetime fields. I also show a custom solution which keeps track of the history of events.
(12 minutes)
In-Place Editing
Edit an attribute in-place without leaving a page using the Best In Place gem. Learn how to add validations and support for various field types.
(8 minutes)
Multitenancy with Scopes
A multi-tenant application can be difficult to implement because the data for each tenant must be completely separate. Here I show how to do this using subdomains and default scopes in Active Record.
(12 minutes)
STI and Polymorphic Associations
Single Table Inheritance (STI) can help organize branching logic into separate classes, but a polymorphic association may be a better fit if there are unique database columns.
(14 minutes)
Time Zones (revised)
Active Support makes it easy to work with time zones. Learn how to add a Time Zone select field to a user form and watch out for the gotchas.
(7 minutes)
Active Record Reputation System
If you need to calculate an average user's rating or sum up a number of votes, consider using the activerecord-reputation-system gem. Here I will cover the basics and also briefly present a from-scratch solution.
(10 minutes)
Testing JavaScript with PhantomJS
PhantomJS allows us to test JavaScript without going through a browser window. Here I show how to do this using Capybara and Poltergeist. I also give some tips on handling database transactions and skipping javascript tests.
(10 minutes)
Semi-Static Pages (revised)
There are many ways to handle static pages in a Rails application. Here I show two approaches including one that uses a RESTful style PagesController to keep the content in the database
(8 minutes)