Sinatra provides a helpful pair of special handlers for 404 and 500 errors. By default, Sinatra has an ugly “Not Found” and “Error” message, these allow you to customize them, and render your own pages.

It’s pretty simple:

# Render views/404.haml
not_found do
  haml :'404'
end
 
# Render views/500.haml
# @e holds whatever was thrown, in this example, a string, 
# but it could have an Error class of some sort.
error do
  @e = request.env['sinatra_error']
  haml :'500'
end
 
get '/' do
  raise "Error happened!"
end

Notice that I had to surround the templates in single quotes. This is because ruby syntax doesn’t let symbol’s first character be a number. By quoting it, it gets around that issue.

This entry was posted on Wednesday, September 10th, 2008 at 12:27 pm and is filed under Programming. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.