b0w3rb0w3r b0w3rb0w3r - 5 months ago 84
jQuery Question

Storing generated PDF files on the server

Using the

jsPDF
plugin, I am creating a
.pdf
file and generating a download based on a button click. I would like to save the file onto my server instead of initiating the download. So when the button is clicked I would like the file to be saved in :

/tmp/uploads/pdf/example.pdf


I am aware I need have to use
Jquery.Ajax
to post the file to the server. However, looking at the documentation and I didn't see any support for
.pdf
as a datatype.

My code:

$(document).on("click", "#PDF", function () {
var table = document.getElementById("result");
var tbl = window.sessionStorage.getItem("tbl");
var cols = [],
data = [];

function html() {
var doc = new jsPDF('p', 'pt');
var res = doc.autoTableHtmlToJson(table, true);
doc.autoTable(res.columns, res.data);
doc.save( tbl+".pdf");
}
html();
});


Based on this xml document saving example I tried the following:

var pdfDocument = doc.save( tbl+".pdf");
var pdfRequest = $.ajax({
url: "/tmp/uploads/pdf",
processData: false,
data: pdfDocument
});


This downloaded the file instead of saving it. How can I save the file?

Answer

I managed to fix this using FormData(), here's how I did it:

$(document).on("click", "#PDF", function () {
    var table = document.getElementById("result");
    var cols = [],
        data = [];

    function html() {
        var doc = new jsPDF('p', 'pt');
        var res = doc.autoTableHtmlToJson(table, true);
        doc.autoTable(res.columns, res.data);
        var pdf =doc.output(); //returns raw body of resulting PDF returned as a string as per the plugin documentation.
        var data = new FormData();
        data.append("data" , pdf);
        var xhr = new XMLHttpRequest();
        xhr.open( 'post', 'upload.php', true ); //Post to php Script to save to server
        xhr.send(data);

    }
    html();
});

upload.php

if(!empty($_POST['data'])){
    $data = $_POST['data'];
    $fname = "test.pdf"; // name the file
    $file = fopen("testa/pdf/" .$fname, 'w'); // open the file path
    fwrite($file, $data); //save data
    fclose($file);
} else {
    echo "No Data Sent";
}

The key part being var pdf =doc.output(); where you want to get the raw pdf data.