Required attachments if number column is a certain value

  • 1 March 2021
  • 2 replies

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I hope someone can help. I have a requirement to make the attachments control mandatory if one of two number columns >= x number:


IF numberColumn1 OR numberColumn2 >=4 THEN Attachments control is mandatory (a document must be attached to submit the form).


I can't seem to make this work with regular validation rules. Dose anyone have any guidance on how I could achieve this? 


Thanks in advance




Platform: SharePoint 2013 Enterprise On Prem

Nintex version: Nintex Forms 2013 ( )


Best answer by Nunezma 18 March 2021, 17:16

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2 replies

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@harryr You can do this by counting the number of attachments, see my example below:


If Witness equals yes then there must be at least 1 attachment


Validation rule:  Witness=="Yes"&&GetNumberOfAttachments("nf-form-input5")<1


JS:   function GetNumberOfAttachments(attCtrlClassName){
return NWF.FormFiller.Attachments.GetAttachedFilesCount(NWF.FormFiller.Functions.GetFillerDivObjectForControl(NWF$("#"+NWF$("." + attCtrlClassName + " .nf-attachmentsRow")[0].id)).data('controlid'))};





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Thanks both. 


I did manage to get this working using a mixture of other posts and muddling through it.


Step 1. Put this function in the custom JavaScript section in the Settings window.

function getNumberOfAttachments(attCtrlClassName){
return NWF.FormFiller.Attachments.GetAttachedFilesCount(NWF.FormFiller.Functions.GetFillerDivObjectForControl(NWF$("#"+NWF$("." + attCtrlClassName + " .nf-attachmentsRow")[0].id)).data("controlid"));


2. Then on the attachments control, I put in a validation rule that looks at two fields and checks if either (or) has matched a specific value for each:

or(greaterThanOrEqual(DepartmentsInvolved,2), or(greaterThanOrEqual(TotalProjectTeam2,5)) ) && getNumberOfAttachments("nf-form-input") <1


The above condition checks if field:DepartmentsInvolved is more than or equal to 2 or if field:TotalProjectTeam2 is greater than or equal to 5.


Apologies for not crediting the other posts but it was a mish mash of multiple browser tabs and a few nights sleep since then 🙂


Thanks for all the support on this.


I hope this helps someone else. Basically, you can reuse that JavaScript as it is and then assign a  rule to the attachments control to check for field values.