This is huge for writing extensions that install routes.
The developer can set the block to do default behaviour
if the app that registered the extension has not, or does
not want to, customize the route.
example:
# MyFooExt
...
def self.registered(app)
app.get "/foo" do
do_foo_things
pass do
"You hit foo!"
end
end
end
At this point, as the user of MyFooExt, I can let the default
behaviour happen or override:
# MySinatraApp
require 'sinatra/my_foo_ext'
class MySinatraApp < Sinatra::Base
register MyFooExt
get "/foo" do
# MyFooExt has done do_foo_things
do_our_foo_things
"All foo things done"
end
end
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