Class: CommodityScraper

Inherits:
Object
  • Object
show all
Defined in:
lib/commode.rb

Defined Under Namespace

Classes: Commodity

Class Method Summary collapse

Class Method Details

.prices ⇒ Object 



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# File 'lib/commode.rb', line 7

def self.prices
  uri = URI 'http://www.caseyresearch.com'

  doc = Nokogiri::HTML(open uri) 
  prices_table = doc.css '#block-casey_stocks-1 , #block-casey_stocks-1 .odd, #block-casey_stocks-1 , #block-casey_stocks-1 .even' 

  odd = doc.css('#block-casey_stocks-1 .odd')
  even = doc.css('#block-casey_stocks-1 .even') 
  table = odd.zip(even).flatten
  values = table.collect{|c| c.children[0].text rescue nil } 


  values_array = [] 
  values.each_slice(values.count/4 - 1) do |array| 
    values_array << array 
  end 

  commodities_data = values_array[0].zip(values_array[1],values_array[2],values_array[3]) 
  commodities = commodities_data.inject([]) do |array, c|
    array << Commodity.new(c[0], c[1], c[2], c[3]) 
  end 
  
  commodities
end