Sinatra/Ruby new to programming - increasing an integer if a radio button is selected -

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i new , trying pretty simple not sure begin. need increase "vote" count of newly posted link 0 10 if radio button selected. here complete code have far, appreciated:

    require 'sinatra'     require 'data_mapper'     require 'haml'     require 'sinatra/reloader'     set :bind, '0.0.0.0'      datamapper::setup(:default,"sqlite3://#{dir.pwd}/example.db")      class link     include datamapper::resource     property :id, serial     property :title, string     property :url, text     property :bullet, boolean, :default => false     property :score, integer     property :points, integer, :default => 0     property :created_at, time      attr_accessor :score      def calculate_score       time_elapsed = (time.now - self.created_at) / 3600       self.score = ((self.points-1) / (time_elapsed+2)**1.8).real     end      def self.all_sorted_desc       self.all.each { |item| item.calculate_score }.sort { |a,b| a.score <=> b.score}.reverse     end   end    datamapper.finalize.auto_upgrade!    '/'     @links = link.all :order => :id.desc     haml :index   end    '/hot'     @links = link.all_sorted_desc     haml :index   end    '/:id'     @link = link.get params[:id]     haml :index   end    post '/'     l = link.new     l.title = params[:title]     l.url = params[:url]     l.bullet = params[:bullet]     l.created_at = time.now     l.save     redirect   end    put '/:id/vote/:type'     l = link.get params[:id]     l.points += params[:type].to_i     l.save     redirect   end    delete '/:id'     l = link.get params[:id]     l.destroy     redirect '/'   end    __end__    @@ layout   %html     %head       %link(rel="stylesheet" href="/css/bootstrap.css")       %link(rel="stylesheet" href="/css/style.css")     %body       .container          #main           .title learn sinatra           .options           %a{:href => ('/')} new           |           %a{:href => ('/hot')} hot           = yield    @@ index   #links-list     -@links.each |l|       .row         .span3           %span.span             %form{:action => "#{l.id}/vote/1", :method => "post"}                %input{:type => "hidden", :name => "_method", :value => "put"}                %input{:type => "submit", :value => "u"}           %span.points             #{l.points}           %span.span             %form{:action => "#{l.id}/vote/-1", :method => "post"}               %input{:type => "hidden", :name => "_method", :value=> "put"}               %input{:type => "submit", :value => "d"}           .span6             %span.link-title               %h3                 %a{:href => (l.url)} #{l.title}              %span.span               %form{:action => "#{l.id}", :method => "post"}                 %input{:type => "hidden", :name => "_method", :value=> "delete"}                 %input{:type => "submit", :value => "x"}   #add-link     %form{:action => "/", :method => "post"}       %input{:type => "text", :name => "title", :placeholder => "title"}       %input{:type => "text", :name => "url", :placeholder => "url"}       %input{:type => "radio", :name => "bullet", :value => "10"}       %input{:type => "submit", :value => "submit"}

you have define route function receives get/post request should trigger column update adds 1 vote count


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