José Miguel José Miguel - 6 months ago 323
jQuery Question

Can't download a PDF generated with TCPDF using AJAX

I want to get a PDF of an HTML file, I am using TCPDF to generate the PDF and AJAX to send the information. Right now, I am only trying to get a PDF of one SVG on the page, when I get this done I will do the rest.

The problem is that TCPDF generates the PDF but instead of downloading it, it passes it to the javascript cosole. When I don't use AJAX it works perfect.

Here is the AJAX code:

// Get the d3js SVG element
var tmp = document.getElementById("elemPD5graf");
var svg = tmp.getElementsByTagName("svg")[0];

// Extract the data as SVG text string
var svg_xml = (new XMLSerializer).serializeToString(svg);

var j = jQuery.noConflict();
var parameters = { datos : svg_xml };
j.ajax({
type: 'POST',
url: 'generarPDF.php',
data : parameters,
success: function(result) {
console.log(result);
}
});


And here is the PHP code:

<?php
// Include the main TCPDF library (search for installation path).
require_once('..\tcpdf\tcpdf.php');
// create new PDF document
$pdf = new TCPDF(PDF_PAGE_ORIENTATION, PDF_UNIT, PDF_PAGE_FORMAT, true, 'UTF-8', false);

// set default header data
$pdf->SetHeaderData(PDF_HEADER_LOGO, PDF_HEADER_LOGO_WIDTH, PDF_HEADER_TITLE.' 058', PDF_HEADER_STRING);

// set header and footer fonts
$pdf->setHeaderFont(Array(PDF_FONT_NAME_MAIN, '', PDF_FONT_SIZE_MAIN));
$pdf->setFooterFont(Array(PDF_FONT_NAME_DATA, '', PDF_FONT_SIZE_DATA));

// set default monospaced font
$pdf->SetDefaultMonospacedFont(PDF_FONT_MONOSPACED);

// set margins
$pdf->SetMargins(PDF_MARGIN_LEFT, PDF_MARGIN_TOP, PDF_MARGIN_RIGHT);
$pdf->SetHeaderMargin(PDF_MARGIN_HEADER);
$pdf->SetFooterMargin(PDF_MARGIN_FOOTER);

// set auto page breaks
$pdf->SetAutoPageBreak(TRUE, PDF_MARGIN_BOTTOM);

// set image scale factor
$pdf->setImageScale(PDF_IMAGE_SCALE_RATIO);

// ---------------------------------------------------------

// set font
$pdf->SetFont('helvetica', '', 10);

// add a page
$pdf->AddPage();

// NOTE: Uncomment the following line to rasterize SVG image using the ImageMagick library.
//$pdf->setRasterizeVectorImages(true);
$svg2 = $_POST['datos'];

$pdf->ImageSVG($file='@'.$svg2, $x=15, $y=30, $w='', $h='', $link='http://www.tcpdf.org', $align='', $palign='', $border=1, $fitonpage=false);

// ---------------------------------------------------------

//Close and output PDF document
$pdf->Output('nuevo.pdf', 'D');
//============================================================+
// END OF FILE
//============================================================+
?>


Thanks in advance for the help.

Answer
$returnValue = $pdf->Output($name, $destination);

$destination can take one of the following values:

I: send the file inline to the browser (default). The name given by name is used when one selects the "Save as" option on the link generating the PDF.

D: send to the browser and force a file download with the name given by name.

F: save to a local server file with the name given by name.

S: return the document as a string (name is ignored).

FI: equivalent to F + I option

FD: equivalent to F + D option

E: return the document as base64 mime multi-part email attachment (RFC 2045)

Check the documentation for more information.

The error Unable to create output file means that TCPDF can't write your document to your folder. Provide a valid path in $name.

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