File upload doesn't happen on inline entity form submit

Committed a fix.

I had the same problem in the last branch of the module

I've also found this bug in 7.x-1.1 - image will not uploaded if user simply selected image without clicking 'Upload' button.

i can confirm this issue: no files uploaded without using 'Upload' button.

it seems that this issue happens because the file.js script from Drupal core file module doesn't get called.
here is a patch that adds this js file.

p.s. imho the solution should be an auto upload script, as without using 'Upload' button, there's no possibility to add/upload other files (multiple values) for referenced entity.
imagine 10 references with 10 files to upload each.
or maybe a compatibility (check) with an multiupload widget.

for example, here is an Commerce kickstart issue about this : #1714932-5: Improve usability of uploading files in attribute form.

it seems critical for Required File/Images fields.

Without using the Upload button, the referenced entity couldn't be saved and the file form element gets empty (Browse... again and again).

I ended up using AutoUpload module (https://drupal.org/project/autoupload) and I recommend it.

Committed, thanks.

I'm still having this issue. I tested 7.x-1.3 and dev. But both have the problem.
Uploads are only saved when clicking the upload button.

The same problem is reproducible using 7.x-1.5 version (tested with image and file fields)

After some test I've found a way to reproduce the bug. At first you've to enable jquery_update and set two different jquery versions as default and administrative pages. This will trigger the bug. After setting the same version on jquery update I've solved the problem.

@FiNeX: Are you saying the problem is being caused by a jQuery conflict due to using jQuery_Update?

@zuuperman: Are you using jquery_update too?

@Damien: it looks so

The problem is in old version of jquery.form.js. It works with 3.50, but doesn't with 2.69 (see https://www.drupal.org/node/2266303).

So, does anyone have a fix?

I need jquery_update for many reasons.
Is there a particular version i should be using for admin?

I've been using jquery 1.7 fairly successfully for some time now.

@joelpittet thanks, i'll give that a shot.
I've had serious issues with Views UI + jquery 1.7 in the past, so I may have to figure out how to manually override jquery_update on specific pages.

Okay, so there's no work left on this side. Thanks for letting us know.