Displaying pdf from arraybuffer

Question

I am returning stream data from laravel dompdf from this code

 $pdf = \App::make('dompdf.wrapper');
 $pdf->loadHTML("<div>This is test</div>");
 return $pdf->stream();

And this is my JS ajax code

    $.ajax({
        type:"GET",
        url: "/display",
        responseType: 'arraybuffer'
    }).done(function( response ) {
        var blob = new Blob([response.data], {type: 'application/pdf'});
        var pdfurl = window.URL.createObjectURL(blob)+"#view=FitW";
        $("#pdfviewer").attr("data",pdfurl);
    });

Here is HTML to display pdf after ajax

<object id="pdfviewer" data="/files/sample.pdf" type="application/pdf" style="width:100%;height:500px;"></object>

I am getting below error

Failed to load PDF document

Please help to fix this. How to display pdf file.

Answer 1

jQuery.ajax() does not have a responseType setting by default. You can use a polyfill, for example jquery-ajax-blob-arraybuffer.js which implements binary data transport, or utilize fetch().

Note also, chrome, chromium have issues displaying .pdf at either <object> and <embed> elements, see Displaying PDF using object embed tag with blob URL, Embed a Blob using PDFObject. Substitute using <iframe> element for <object> element.

$(function() {

  var pdfsrc = "/display";

  var jQueryAjaxBlobArrayBuffer = "https://gist.githubusercontent.com/SaneMethod/" 
                         + "7548768/raw/ae22b1fa2e6f56ae6c87ad0d7fbae8fd511e781f/" 
                         + "jquery-ajax-blob-arraybuffer.js";

  var script = $("<script>");

  $.get(jQueryAjaxBlobArrayBuffer)
  .then(function(data) {
    script.text(data).appendTo("body")
  }, function(err) {
    console.log(err);
  })
  .then(function() {
    $.ajax({
      url: pdfsrc,
      dataType: "arraybuffer"
    })
    .then(function(data) {
      // do stuff with `data`
      console.log(data, data instanceof ArrayBuffer);
      $("#pdfviewer").attr("src", URL.createObjectURL(new Blob([data], {
            type: "application/pdf"
          })))
     }, function(err) {
          console.log(err);
     });

  });
});

Using fetch(), .arrayBuffer()

  var pdfsrc = "/display";

  fetch(pdfsrc)
  .then(function(response) {
    return response.arrayBuffer()
  })
  .then(function(data) {
    // do stuff with `data`
    console.log(data, data instanceof ArrayBuffer);
    $("#pdfviewer").attr("src", URL.createObjectURL(new Blob([data], {
        type: "application/pdf"
    })))
  }, function(err) {
      console.log(err);
  });

plnkr http://plnkr.co/edit/9R5WcsMSWQaTbgNdY3RJ?p=preview

version 1 jquery-ajax-blob-arraybuffer.js, jQuery.ajax(); version 2 fetch(), .arrayBuffer()