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revised x
The Logger (revised)
The log file will show what is going on behind the scenes of a Rails request. Learn how to log messages, add tags, override formatting, and more.
(6 minutes)
Performance Testing
Learn how to add performance tests that automate benchmark and profile reports. Here I show how to find the bottlenecks to optimize a page. I also show how to compile Ruby with gcdata to get information about memory usage.
(16 minutes)
HABTM Checkboxes (revised)
A many-to-many association can be edited through check boxes in a form. Here I show how to do this with a has_many through association complete with clickable labels.
(6 minutes)
Debugging Ruby (revised)
This episode will show you how to debug a rails app using the "debugger" gem: set a breakpoint, inspect variables and change the executed code at runtime.
(7 minutes)
Hackers Love Mass Assignment (revised)
One of the most common security issues in a Rails application is the mass-assignment vulnerability which allows a user to set any attribute on the model. Learn how to prevent it in this episode.
(6 minutes)
SimpleForm (revised)
Easily generate complex forms with SimpleForm. Here I show how to convert bulky markup into a concise list of fields, customize it by passing options, and add error handling.
(9 minutes)
Bundler (revised)
Bundler makes it easy to manage Ruby Gem dependencies. Learn how to use it in a Rails application, see what's new in Bundler 1.1, convenient ways to run bundle exec, and how to fix gem compilation issues.
(9 minutes)
Subdomains (revised)
In Rails 3.1 subdomains are easier than ever to use. Here I show how to route a subdomain to a specific controller action, generate links, nest resources, and more.
(7 minutes)
PDFs with Prawn (revised)
Prawn is an excellent Ruby library for generating PDF documents. Here you will learn how to add it to a Rails application through a separate PDF renderer class.
(11 minutes)
Delayed Job (revised)
Long requests should be moved into a background process, and Delayed Job is one of the easiest ways to do this because it works with an Active Record database.
(8 minutes)