#2768 added line numbers in spreadsheet export

[symmetrically]

Closes #2768

[benwbrum]

I've reproduced the test failure locally; here's what we see at field_based_spec:133:

. print page.text NoMethodError at /export/table_csv

undefined method `input_type' for nil:NilClass

To access an interactive console with this error, point your browser to: /__better_errors app/controllers/concerns/export_service.rb, line 676

---

671 end 
672 
673 
674 def cell_data(array, data_cells, transcription_field_flag, count, position, spreadsheet_count) 
675 if transcription_field_flag > 
676 result = array.select { |element| element.transcription_field.input_type == 'spreadsheet' } 
677 end 
678 array.each do |cell| 
679 index = index_for_cell(cell) 
680 target = transcription_field_flag ? index : index *2 
681 if cell.transcription_field.input_type == "spreadsheet" && spreadsheet_count == 1 

App backtrace

• app/controllers/concerns/export_service.rb:676:in `block in cell_data'