everything.inject {|sum, post| sum += post}

Now let's sum up all code-snippets, so you don't have to copy and past all the stuff if you wanna start from here.

require 'camping'

Camping.goes :Simple

module Simple::Controllers
class Index < R '/'
    def get
        render :index
    end
end

class Greeter < R '/greeter/(\w+)', '/greeter'
    def get message
        render message
    end
    def post
        @names = input.names
        render :greetings
    end
end

class Style < R '/styles.css'
    def get
        @headers["Content-Type"] =
                   "text/css; charset=utf-8"
        @body = %{
            body {
                background-color: #BDFFB0;
            }
            p.hello {
                color: red;
            }
        }
   end
end
end

module Simple::Views

def layout
    html do
        head do
            title 'my camping site'
            link :rel => 'stylesheet',
                 :type => 'text/css',
                 :href => '/styles.css',
                 :media => 'screen'
        end
        body do
            self << yield
        end
    end
end

def index
    p.hello "Welcome on my greeting-engine!"
    _greet
end

def greetings
    @names.split(", ").each do |n|
        p.hello ("Hello " + n + "!")
    end
    a("Back to input", :href => R(Index))
end

#Partials start here!
def _greet
    form :action => R(Greeter),
                 :method => 'post' do
        label 'Persons you wanna greet:',
                 :for => 'names'
        br
        input :name => 'names', :type => 'text'
        br
        input :type => 'submit',
                 :value => 'Greet!'
    end
end
end