What’s 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?
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 the quit
command,
the debugger lets Rails get back to what it was doing. The
quit
command exits the debugger
and shuts down the application.