Class: DataGrid::Summaries

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

Overview

Grid summaries

Class Method Summary collapse

Class Method Details

.average(a) ⇒ Object 



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# File 'lib/data_grid/summaries.rb', line 7

def self.average(a)
  result = 0 
  unless a.blank?
    a.each{|p| result += p.to_f} 
    result /= a.size
  end
  result.to_s
end

.sum(a) ⇒ Object 



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# File 'lib/data_grid/summaries.rb', line 16

def self.sum(a)
  result = 0
  a.each{|p| result += p.to_f} unless a.blank?
  result.to_s
end

.sum_price(a) ⇒ Object 



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# File 'lib/data_grid/summaries.rb', line 22

def self.sum_price(a)
  result = 0
  unless a.blank?
    a.each do |p|
      result += p.match(/\-*\d+\,\d+/)[0].gsub(',', '.').to_f if p.match(/\d+\,\d+/) and p.match(/\d+\,\d+/)[0] 
    end
  end
  result = sprintf("%.2f", result.to_f.round(2)).to_s 
  result
end