File Upload on multi-page form

[james-dimmer]

When using a file upload on a multi-page form, the value of the file upload does not persist throughout navigation through the pages or submission. There is a further issue if the field is mandatory which is also explained in the section below.

Reproduction

Bug summary

We have created a form that has 2 pages, page 1 includes a file upload.

If you complete page 1 by uploading file A, then go to the next page, and then go back to the first page. We then experience an issue whereby file A is listed as a "Current file" yet with the file upload field being mandatory the user is prompted to upload another file.

After uploading another file (file B) to get past the validation on the file upload field, only file B is submitted with the form, and file A is completely lost.

Specifics

This happens when using Umbraco Forms 7.0.6 on Umbraco 7.12.3

Steps to reproduce

1. Create a new form with 2 pages
2. Add a mandatory short answer and a mandatory file upload to page 1
3. Add a long answer to page 2
4. View the form on the frontend, completing the first page with a short answer and an uploaded file (file A)
5. Click through to the next page of the form
6. Click previous to go back to the first page of the form
7. File A which was uploaded from step 4 will be listed under current files
8. When trying to click through to the next page of the form you are prompted to upload another file even though there is one listed as a "Current file"
9. After uploading another file (file B) to get around the issue on point 8, when clicking through and submitting the form, file A is not submitted. Only file B is present when checking the form entries in the backoffice

Expected result

When going back to the first page the validation should be aware of the "Current files" and if there are any the validation should pass.

After uploading file B and submitting the form, for both file A and file B to be present when checking form entries in the backoffice.

Actual result

When going back to the first page the validation fails prompting the user to upload another file even if there is a "Current file"

As 2 files have now been uploaded and submitted to the form, they should both appear on this entry in the backoffice

[sattapaal]

i think there is more than one problem with uploads. im on forms 8.2, if you also have two uploads on the same page, upload 2 files, go next step, go back, upload one file, leave the other, the uploaded file is shown, but the one left is gone. it could be related to this problem.

[RyanTuckNZ]

Hey guys, this is quite a big one for us, has there been any movement on these issues?

We're on Umbraco 8.1.0 with UmbracoForms 8.5.2 and are experiencing both of these issues

Cheers

[elit0451]

The incorrect validation of mandatory file upload fields on multi-page form has been fixed and is due in the next release 🎊

While when it comes to the issue with "2 files being uploaded and submitted to the form but not appearing on the submitted entry" - this behaviour seems consistent with other examples we have, ex: store the most recent version and overwrite the old, so we consider this the correct behaviour.