`block in read_file': undefined method `center' for nil:NilClass (NoMethodError) from version_2.rb:11:in `each_line' from version_2.rb:11:in `read_file' from version_2.rb:7:in `initialize' from version_2.rb:69:in `new' from version_2.rb:69:in `<main>'

gistfile1.txt

class UtilitiesStats

  attr_accessor :all_cust

  def initialize data
    self.all_cust = []
    read_file data
  end

  def read_file data
    File.open( data , "r").each_line do |line|
      data = line.split("|")

      cust_id, elect_or_gas, disconnect_doc, move_in_date, move_out_date, bill_year, bill_month, span_days, meter_read_date, 
      meter_read_type, consumption, exception_code = data 

      if cust_exist = all_cust.detect {|k| k[cust_id]}
        next if cust_exist['CustID']
        index = all_cust.index(cust_exist)
        all_cust[index][cust_id] << { 
                        elect_or_gas: elect_or_gas, disconnect_doc: disconnect_doc, move_in_date: move_in_date,
                        move_out_date: move_out_date, bill_year: bill_year, bill_month: bill_month,
                        span_days: span_days, meter_read_date: meter_read_date, meter_read_type: meter_read_type, consumption: consumption,
                        exception_code: exception_code
                      }
        
      else
        all_cust << { cust_id => [{ 
                        elect_or_gas: elect_or_gas, disconnect_doc: disconnect_doc, move_in_date: move_in_date,
                        move_out_date: move_out_date, bill_year: bill_year, bill_month: bill_month,
                        span_days: span_days, meter_read_date: meter_read_date, meter_read_type: meter_read_type, consumption: consumption,
                        exception_code: exception_code
                      }]
                    }

      end
      c = 15 #nbr of characters with string in center for prettier output
      print "#{cust_id.center(c)}| #{elect_or_gas.center(c)}| #{disconnect_doc.center(c)}| #{move_in_date.center(c)}| #{move_out_date.center(c)}| #{bill_year.center(c)}| #{bill_month.center(c)}| #{span_days.center(c)}| #{meter_read_date.center(c)}| #{meter_read_type.center(c)}| #{consumption.center(c)}| #{exception_code.center(c)}\n" 
    end
  end

u = UtilitiesStats.new "./pulse_data.txt"