projects.mako.cc - selectricity/blob - app/controllers/sparklines_controller.rb

   1
   2 # Handles requests for sparkline graphs.
   3 #
   4 # You shouldn't need to edit or extend this, but you can read
   5 # the documentation for SparklinesHelper to see how to call it from
   6 # another view.
   7 #
   8 # AUTHOR
   9 #
  10 # Geoffrey Grosenbach[mailto:boss@topfunky.com]
  11 #
  12 # http://topfunky.com
  13 #
  14 class SparklinesController < ApplicationController
  15         layout nil
  16
  17         def index
  18                 # Make array from comma-delimited list of data values
  19                 ary = []
  20                 params['results'].split(',').each do |s|
  21                         ary << s.to_i
  22                 end
  23
  24                 send_data( Sparklines.plot( ary, params ),
  25                                         :disposition => 'inline',
  26                                         :type => 'image/png',
  27                                         :filename => "spark_#{params[:type]}.png" )
  28         end
  29
  30 end