Ruby on Rails Screencasts

Episode #152 – Mar 09, 2009 – 55 comments

Rails 2.3 Extras

This episode finishes up this series on Rails 2.3. Here you will learn about several smaller additions in 2.3. (9 minutes)

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Episode #388 – Oct 20, 2012 – 120 comments

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)

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Episode #103 – Nov 12, 2012 – 95 comments

Site-Wide Announcements (revised)

Here I show how to add an announcement message at the top of every page in the application and allow the user to permanently hide it. This is all done test-first and even includes testing the JavaScript behavior. (11 minutes)

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Episode #389 – Oct 27, 2012 – 112 comments

Multitenancy with PostgreSQL

PostgreSQL Schemas can help create a multi-tenant app by keeping data separate at the database layer. Integrating with migrations can be tricky though, so watch this episode for the full details. (11 minutes)

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Episode #63 – Dec 16, 2012 – 85 comments

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)

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Episode #59 – Aug 04, 2012 – 135 comments

Optimistic Locking (revised)

There is a chance one user will unintentionally override someone else's changes if they update a record near the same time. One solution is to use optimistic locking. The updated_at column can also be used for this as shown. (8 minutes)

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Episode #140 – Dec 15, 2008 – 45 comments

Rails 2.2 Extras

This episode finishes up the Rails 2.2 series by showing a few miscellaneous additions that I find useful. (4 minutes)

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Episode #394 – Nov 25, 2012 – 81 comments

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)

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