Test Your Knowledge
Quiz
Whatâs the easiest way to present debugging information in a Rails view?
Where can you find information about how quickly different aspects of a request were handled?
How can you test routing from the console?
How do you tell your program to support the Ruby debugger?
How do you let your program continue when you exit the Ruby debugger?
Answers
The
debug
method makes it easy to present the complete contents of an object in a mostly readable YAML representation..Rails includes a lot of timing information in its development log, which is available both in the terminal window for
script/server
and in the log/development.log file.You can test simple routes by calling
app.url_for
. If you need to test named routes,include ActionController:UrlWriter
and then try calling the path methods.By adding
require "ruby-debug"
to the config/environments/development.rb file.When you use the
cont
command, rather than thequit
command, the debugger lets Rails get back to what it was doing. Thequit
command exits the debugger and shuts down the application.
Get Learning Rails: Live Edition now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.