Client side file upload checks

Klaus

Thu, 16 Apr 2015 00:45:49 +0200

Working on the quota plugin for #RedDAV I was looking for some client side possibilities. Right now you first upload a file just to get to know that the file was too big or your quota was full, etc and that it failed. The screenshot shows a quick poc how we could check on client side for upload limits before actually uploading files. This cannot replace the quota plugin, but would improve user experience and reduce unnecessary transferred data I think.

You select the files you want to upload and it will calculate on the client side already a total filesize and this we could check against various limits like php upload limit, free quota, etc. and already inform the user before starting to upload anything. The example also displays some information of all selected files. If it is an image it even shows a preview.

@RedDAV Developers+

[+] show all 7 comments

Thomas Willingham

Thu, 16 Apr 2015 00:50:08 +0200

Ha! 99bottles.pl is in my dav too.

Habeas Codice

Thu, 16 Apr 2015 08:48:00 +0200

What do you have in mind for the server side? The new accounting system has significant flexibility. I can work up some examples in the documentation if you give me a jump off point...

Mike Macgirvin

Thu, 16 Apr 2015 10:45:31 +0200

Sounds to me like all it needs from the server is a js var containing the remaining quota.

Habeas Codice

Thu, 16 Apr 2015 15:05:32 +0200

Possibly, it's this part that makes me wonder if there's more:

Working on the quota plugin

This cannot replace the quota plugin, but

When I hear quota, my mind brings forth images of per-folder limits or maybe even per-person-per-folder limits. It should be possible to implement any scheme one could come up with, with a little work. At any rate, using the existing service class limits for the next few weeks is advisable, I just was wondering if there is more in store for the future, so I don't accidentally cut out any functionality someone might need in a rush to get a release. I also would like to include as many real-world examples as possible in the documentation to make it easier for people to build on what I've made.

If it is just like the existing limits, then nothing will really change. I will eventually deprecate the service limit functions, but the compatibility layer will exist for a while anyway. The replacement will also be a one-line function call as well, it'll just be much more powerful.

Klaus

Fri, 17 Apr 2015 01:06:49 +0200

The "quota plugin" only contains the checks that are already available now in RedDAV so far. It is just implemented as a SabreDAV server plugin and checks these limits much earlier in the process and for all requests going through WebDAV. It should be easily extended to support your advanced accounting system.
The solution in the screenshot is an optional information to the member to get informed that an upload will fail before sending it to the server just to get error message then about limits.

Habeas Codice

Fri, 17 Apr 2015 01:14:59 +0200

ahh sabredav plugin not redmatrix plugin, gotcha

Klaus

Fri, 17 Apr 2015 01:31:10 +0200

Information overkill... It got way too much information to display in a useable way, but the functionality works

It displays and checks now PHP limits for post_max_size for the total size of all selected files and upload_max_filesize for the filesize limit of a single file. If a file is bigger than the upload_max_filesize this file is marked with a red border.
Service class, free storage limits or other accounting stuffs could be added, too if required.
Works quite good so far, but I haven't tested this JavaScript Files object in other browsers yet.

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