How to show a warning before every file upload?

đź’» Development
#1

Hello everyone,

I would like to develop an app which asks the user to confirm every upload they do (both drag&drop and by the upload button) in a dialog as like this:

“Are you sure you want to upload this file into folder [foldername]?”

How can I accomplish that in my app’s JavaScript? Is there an event for file uploads that can be consumed?
Am I supposed to use the package nextcloud/event-bus? If so, which event can I subscribe to?
The targeted NextCloud version is 17 and above.

I couldn’t find any information about this in the docs, so I hope someone could kindly help me :slight_smile:

Thank you very much!

Alex

#2

There aren’t many events on the event bus right now and there is certainly none for uploads on Nextcloud 17

#3

Thanks for your reply. Any other idea how I could solve this issue?

#4

@PVince81 maybe you have an idea?

#5

I don’t think there is any event for this.
Also what you’d need is not only an event but also a way to block the normal flow of uploads, basically “cancelling” the upload from your event handler.

In any case, you could have a look at server/file-upload.js at master · nextcloud/server · GitHub which is the file that handles uploads.
For drag and drop, see server/filelist.js at master · nextcloud/server · GitHub and server/filelist.js at master · nextcloud/server · GitHub. You’ll likely need to patch that code somehow.

1 Like
#6

@alberto93
Do you really need a warning for uploading to cloud on a cloud platform?
You also do not have an info on cow milk packages that it is cow breast milk normally for a calf from mixed of hundreds breastfeeding female cows.

#7

@PVince81 Thank you for your help! I will check it out.