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Eager Loading (revised)
One way to improve performance is to reduce the number of database queries through eager loading. Here I demonstrate this and compare the difference between the "includes" and "joins" methods.
(7 minutes)
Full-Text Search in PostgreSQL
Postgres offers full-text searching right out of the box. This episode shows how to write queries from scratch, apply tools like Texticle and pg_search, and optimize performance through indexes.
(16 minutes)
Migrating to PostgreSQL
Postgres is a feature-packed relational database that every Rails developer should consider using. Here you will learn how to install it, add it to a new application, and transition from an existing SQLite app using the "taps" gem.
(8 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)
Virtual Attributes (revised)
Virtual attributes are a clean way to add form fields that do not map directly to the database. Here I show how to handle validations, associations, and more.
(11 minutes)
Embedded Association
Learn how to set up a one-to-many or many-to-many association which is entirely embedded into a single column through a string or bitmask.
(14 minutes)
Include vs Joins
The :include and :joins options for the find method can be a little confusing because they are so similar. In this episode I show specifically when to use which option.
(11 minutes)
Searchlogic
Searchlogic makes searching models easier than ever with its assortment of named scopes. In this episode I show you how to create simple and advanced searches.
(13 minutes)
Tree Based Navigation
The acts_as_tree plugin provides many methods for handling a tree based association. In this episode I show how to build a navigation system with tabs, subpages, and breadcrumbs.
(11 minutes)
Integrating Active Merchant
In this episode I show how to add Active Merchant's functionality to a Rails application to make a fully-functional checkout process.
(18 minutes)