Address CSV to PDF letter

Upload a spreadsheet of addresses to generate a PDF of letters.
Expects first row to contain titles: fullname, address_line_1, address_line_2, address_line_3, city, county, postcode
Can also take comma separated address in column name: single_line_address
{!! Form::open([ 'url' => 'voucher/csv_to_interest', 'id' => 'csv_to_interest_form', 'enctype' => 'multipart/form-data']) !!}
Empty name replace {!! Form::text('empty_name_replace', null, ['id' => 'empty-name-replace']) !!}
Template select letter style. {!! Form::select('letter_style', $letter_styles, null, ['id' => 'letter-select']) !!}
{!! Form::close() !!}
@if(!empty($letters)) @foreach($letters as $letter) {{ $letter }}
@endforeach @endif