Invalid characters in attachment file is crashing Forms and Workflow

I suggest you to send your case to Support​

Hi Fernando,

Yes, I saw it, thank you! But the thread ends with some kind of fórum about if this is a Nintex bug or not, and no clear answer about how to fix it.

For my it's clear this is a bug. It crashes the form and the Workflow never starts... I have a customer complaining about it, and there's no easy solution, only custom Javascrip? If we need to solve all Nintex issues by JavaScript, then is really Nintex Forms usefull (more code than form parametrization has no sense for me).

Kind regards.

Did you ever find a fix for this? I have a similar issue where items that have these attachments do not start the workflow.  Just wondering if you tried writing a validation rule in the form?

Invalid characters will result in error, it will result in the error you displayed in the post above.   The current work around is to use JavaScript to prevent invalid characters being entered into the attachment field.  If you search around the forum you'll find other posts surrounding how to implement this.

Thanks!

Mike

Hi Adrian,

Actually I know this is not a polite resolution, but at the moment it was the easy way I've found:

1 .- I created a single line control, to store a string with the sum of all the attachment names (str1+str2+str3...). This is necessary to have a form field that we can use in our validation rule.

2.- I hide this control from the JavaScript code (It's only for validation proposals):

   $('.Form_Attachments_Name').hide();

3.- I added a listener to my attachment control, capturing all changes on it (new attachments, for instance)

$('table.nf-attachmentsTable').parent().attr('onchange', 'AttachmentChanged()');

4.- I created a function to get the sum of all the attachment names and set the created single line control with the result.

function AttachmentChanged(){

   var attachNames= $(".nf-attachmentsTable span");

   var SumOfNames="";

   $.each(attachNames, function( index, value ) {

      debugger;

      SumOfNames+= value.innerText;   });

   NWF$('#'+Form_Attachments_Name).val(SumOfNames);

}

5.- I created some validation rules over the attachment control, looking like this one (one for each non-authorized char):

This is running well on my form:

Complicated? YES, AND THIS THE KIND OF STUFF THAT NINTEX IS FORCING ME TO DO IGNORING THIS ISSUES.

If you have a better solution, it would be great to know (please share it!)

Best regards.