BOX UI Element File Uploader

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vinayV110

• January 03, 2018 03:16

Hi, 

How to validate file format before uploading file using BOX UI Element -Box Content Uploader?

 

Ref : https://developer.box.com/docs/box-content-uploader 


Regards, 

VinayV

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• 

  jcleblanc

  • January 04, 2018 07:21

  Hi VinayV,

   

  You could listen for the upload complete event (docs here), which will return an array of file objects (docs here). That should have enough information for you to validate the content that was uploaded.

   

  Thanks,

  Jon

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  Ranjith Kumar S

  • December 02, 2020 09:46

  Hi jcleblanc,

               But i want to validate the file type before upload complete. i have added a listener 'beforeupload' where i could retrieve the added files before upload, but i was not able to cancel the event in case of invalid file type. Check the code as below.

  uploader.on('beforeupload', (data) => {
  if (data != undefined) {
  var fileName = data[0].name;
  var ext = (-1 !== fileName.indexOf('.')) ? fileName.replace(/.*[.]/, '').toLowerCase() : '';
  var allowed = ['doc', 'docx', 'xls', 'xlsx', 'pdf'];

  if (!allowed.length) { return true; }

  for (var i = 0; i < allowed.length; i++) {
  if (allowed[i].toLowerCase() == ext) { return true; }
  }
  
  alert('This file types are not allowed to upload!');
  return false;
  }
  
  });

   

  It would be great if you could help me resolve this issue.

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