problems with database registration ends null or logout

Well, I have the following problem: every time the cycle passes, I save each variable in the database but I can not do it. It saves me either an empty record or a record with the code, the type of order and the date in another registry. I already have a CRUD created

This is more or less what I want

           if line.start_with?('UNH')               
               clave     = line[0..4]
              guadar variable clave  em mi base de datos y seguir en el mismo regitro hasta leer la ultima variable
           end            

      if line.start_with?('DTM137')
         clave  = line[0..5]
         fechag = line[6...14]
         guardar fecha dentro del mismo registro
      end

 this is my code

           File.foreach('ojo.txt').with_object([]) do |line, result|

            if line.start_with?('UNH')
               clave     = line[0..4]
               result << "#{clave} ORDEN DE COMPRA"    
            end            

          if line.start_with?('BGM')
              clave     = line[0..2]
              codigooc = line[6...26]

               if line.include?('BGM2') 
                  region = 'ORDEN DE COMPRA '
               else                    
                  region = 'ORDEN DE COMPRA SUGERIDA'
               end

               if cajas = '1'  
                  region = 'CANCELACION'
               end

              if cajas = '9'
                 region = 'ORIGINAL'
              end

              if cajas = '6'
                 region = 'PROPUESTA'
              end 

              result << "#{clave} codigo #{region}, #{@codigooc}"

              Encabezado.create!(numero_oc: codigooc, tipo_oc: region)

          end



      if line.start_with?('DTM137')
          #line.delete(' ')
          clave     = line[0..5]
          fechag = line[6...14]
          result << "#{clave} ,FECHA DE GENERACION MENSAJE #{fechag}"

      end




    if line.start_with?('DTM ')
        clave    = line[0..2]
        fechaen = line[5...13]
        result << "#{clave} , FECHA DE ENTREGA: #{fechaen}"
                       #Encabezado.create!(fechaen: fechaen)
    end



    if line.start_with?('DTM157')# 
       fechalist = line[6...14]
       clave = 'DTM157'
       result << "#{clave} , FECHA DE LISTA DE PRECIOS: #{fechalist}"

    end

      if line.start_with?('NADBY')              
        clave     = line[0..4]
        comprador = line[6...-1]            
        result << "#{clave} , codigo comprador #{comprador}"
      end

     if line.start_with?('NADSU')
        clave     = line[0..4]
        comprador = line[6...-1]
        result << "#{clave} , codigo proveedor #{comprador}"
     end

    if line.start_with?('CTAOC')               
       clave     = line[0..4]
       comprador = line[5...-1]
       result << "#{clave} , INFORMACION PROVEEDOR #{comprador}"
    end

    if line.start_with?('PAT')
       clave     = line[0..2]
       tpago = line[5]
       dentrega = line[7..8]
       dpagar = line [-3..-1]
        result << "#{clave} , codigo #{tpago} , condiciones normales #{tpago} , dias para entrega #{dentrega}  , Dias para pagar #{dpagar} "
    end


       if line.start_with?('TODNC')
          clave     = line[0..4]
          flete1 = 'flete por cuenta del vendedor sin costo'
               else
          flete2 = 'flete por cuenta del comprador'
        result << "#{clave} #{flete2}"
       end

        if line.start_with?('LOC')
          clave     = line[0..2]
          lugar = line[5]
          codigolugar = line[6...-1]
          result << "#{clave} direccion de entrega #{codigolugar}"
        end

image of the database and how to keep the empty records or save what should be a record in two ... try to put the other fields and do not take them