I want to generate a report (which must be in XLSX format). I have run the code in the SYNOPSIS of Excel::Writer::XLSX successfully. If I run the exact same code in the context of a Dancer2 route, the resulting file is incomplete. The file is created, the file is a valid zip file and can be opened in a zip program, but it only contains one of the several files and folders that make up this file type. There are no errors returned from any of the methods.

I have found the file handle property of the workbook object and called flush() on it, I have tried waiting a few seconds after workbook close. No joy.

This is the code that works:

use Excel::Writer::XLSX;
 
# Create a new Excel workbook
my $workbook = Excel::Writer::XLSX->new( 'perl.xlsx' );
 
# Add a worksheet
$worksheet = $workbook->add_worksheet();
 
#  Add and define a format
$format = $workbook->add_format();
$format->set_bold();
$format->set_color( 'red' );
$format->set_align( 'center' );
 
# Write a formatted and unformatted string, row and column notation.
$col = $row = 0;
$worksheet->write( $row, $col, 'Hi Excel!', $format );
$worksheet->write( 1, $col, 'Hi Excel!' );
 
# Write a number and a formula using A1 notation
$worksheet->write( 'A3', 1.2345 );
$worksheet->write( 'A4', '=SIN(PI()/4)' );
 
$workbook->close();
[download]

This is the code that doesn't (other methods and uses hidden):

use Dancer2;

post '/report' => sub {

# Create a new Excel workbook
my $workbook = Excel::Writer::XLSX->new( 'perl.xlsx' );
 
# Add a worksheet
my $worksheet = $workbook->add_worksheet();
 
#  Add and define a format
my $format = $workbook->add_format();
$format->set_bold();
$format->set_color( 'red' );
$format->set_align( 'center' );
 
# Write a formatted and unformatted string, row and column notation.
my $col = my $row = 0;
$worksheet->write( $row, $col, 'Hi Excel!', $format );
$worksheet->write( 1, $col, 'Hi Excel!' );
 
# Write a number and a formula using A1 notation
$worksheet->write( 'A3', 1.2345 );
$worksheet->write( 'A4', '=SIN(PI()/4)' );
 
$workbook->close();

    template 'ok';
};
[download]

I'm aware I could generate an ODS instead and give that to the Excel-wielding masses, but I'd like to try and fix this first. Thanks!

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