Add chooser upload form

[teixas]

Supersedes #66.

Added new tabs at chooser for audio and video uploads.

Got code from documents upload code:
https://github.com/wagtail/wagtail/blob/b9c470df37ee971ad6d60827e631e36897b168e6/wagtail/documents/templates/wagtaildocs/chooser/chooser.html#L31 and https://github.com/wagtail/wagtail/blob/1f2b6fb449781fba0bcd313cca0158812a9bb1e6/wagtail/documents/views/chooser.py#L123

[thibaudcolas]

This is working well @teixas! I haven’t reviewed the tests yet, only spotted two things to fix so far.

One of the two things I spotted is an issue that’s also with the document chooser (wagtail/wagtail#6126), so would be good to fix this here in the same way that it will be fixed in Wagtail.

If you have time to fix some or all of those issues (and add corresponding tests) in your PR then great, otherwise I might try to pick it up at some point (can’t commit to anything).

[thibaudcolas]

I don’t really get in what scenario this view would ever be request with GET rather than POST? I couldn’t test it, but doesn’t seem worth blocking the PR for that.

[teixas]

I think this is required for rendering form before 'post'ing it.

edit:
oh nevermind! The upload form is rendered by chooser view

[thibaudcolas]

This would need to implement the changes done to the chooser view, adding a way to modify its queryset and enforcing permissions:

    media_files = permission_policy.instances_user_has_any_permission_for(
        request.user, ['change', 'delete']
    )
    # allow hooks to modify the queryset
    for hook in hooks.get_hooks('construct_media_chooser_queryset'):
        media_files = hook(media_files, request)

[thibaudcolas]

This isn’t going to work as-is, it overrides media_files defined above. Needs to be:

Suggested change

	media_files = Media.objects.order_by('-created_at')
	media_files = media_files.order_by('-created_at')

[teixas]

I've fixed all issues and also removed code regarding GET request as well as (unnecessary) respective tests.

[thibaudcolas]

This looks good to me at a high level – I should be able to get it merged on Friday this week after a more thorough look.

[thibaudcolas]

Thank you @Eixas, looking great! I spotted a couple things but I can address them myself.

[thibaudcolas]

This isn’t going to work as-is, it overrides media_files defined above. Needs to be:

Suggested change

	media_files = Media.objects.order_by('-created_at')
	media_files = media_files.order_by('-created_at')

[thibaudcolas]

Thank you @teixas :) It’s great to see this feature finally implemented and merged in – now working on a 0.6.0 release!