thingspeak/app/helpers/application_helper.rb

module ApplicationHelper

  def is_a_number?(s)
    s.to_s.strip.gsub(/,/, '.').match(/\A[+-]?\d+?(\.\d+)?\Z/) == nil ? false : true
  end

  def parsefloat(number)
    return number.to_s.gsub(/,/, '.').to_f
  end

  # shortcut for capitalize
  def T(symbol)
    t(symbol).capitalize
  end

  # shortcut for titleize
  def TT(symbol)
    t(symbol).titleize
  end

end