Precentage proxy for Ruby's Numeric class

Just a little something i did, cause it usually takes me about 15 minutes to calculate a percentage conversion.
is anyone else checking/calculating dates in irb/console?
"Elad, in 2 weeks you have a dentist appointment!"
"mmm.... "


script/runner 'puts 2.weeks.from_now'


hehe,
but the method today's post is about, is the percent_from i did, so here it is.


class Numeric
def precent_from(num = 100)
self.to_f * (num.to_f / 100.0)
end
end


which comes out as:


>> 40.precent_from(1000)
=> 400.0
>> 6.precent_from(1000)
=> 60.0


Site Mapping

One of the basic elements for each medium sized web-sites and above, is the site map.
when using rails, mapping in not so easy because the object oriented routing which makes it hard to distinct between regular actions and some "maintenance" actions.

I decided to prepare a small library (for now, extensions will be welcomed) which contains 3 basic mapping functions.

The first 2 are pretty custom made for my current project and will be irrelevant for the most of you, but the third is brought to you straight from the oven.

def site_map(path = RAILS_ROOT + "/app/controllers/")
collector = Hash.new
tree = Dir.entries(path).delete_if {|entry| entry.slice(0,1) == "."}
tree = tree.delete_if {|entry| entry.include?('application_controller.rb')}
unless tree.empty?
for element in tree
element = element.gsub('_controller', '')
if element.include?('.rb')
element = element.gsub('.rb', '')
collector['File-' + element] = element.camelize
else
collector['Dir-' + element] = site_map(path + '/' + element)
end
end
end
return collector
end


as you probably noticed, the site_map method returns a Hash.
regular controllers are returned with a key in this format. 'File-', so ClientsController for example will be issued a 'File-Clients' key.
Sub folders will be hashed as well and the same, except that the directory element's key will be in the format of 'Dir-'

Enjoy.