TLDR:

I need a website that let's signed in users vote on each others photos, and stores that data on who voted for what in a database.

Background

I run a facebook group of about 2,000 members. This group is designed for analog (any non-digital format) photographers to swap high quality artistic prints with each oter. The community was essentially dead and the admin wanted to throw in the towel so I took over. We've made progress, the group growth jumped by over 500% in the first month after I took over.

Right now trading prints doesn't work well. People make a post using the facebook selling format, and those who are interested comment with the image they'd like to trade for. The problem is that the posts get limited visibility due to facebook's algorithms, and stale posts hang around. All of this reduces over all activity, and the majority of posts don't end up in a trade.

My solution is to do a trade event with everyone participating at the same time. Since facebook doesn't lend itself to this I'd like to whip up a quick site for the event. My time is so limited these days I really don't have the capacity to build something from scratch, and the group certainly doesn't have any other developers to help out with it (it skews heavily on the older side).

I'd like to find an open source project that lets users sign in (sign in using facebook would be a bonus) and upload/vote on images. After the voting closes, I'll write code to pair everyone up in a way that optimizes for everyone getting to make a trade. If Alice votes for Bob's image, and Bob votes for Alice's image, they would get paired up to make the swap.

I feel okay writing the code to map out swaps, but I'm pretty terrible at web design and especially at front end design. I've looked across github, but I wanted to reach out and see if anyone could recommend something that I might of missed.

I don't expect to have 2,000 members participate, I think it may be as few as under 100, so hopefully I won't need to worry about scale.

Thanks in advance for the help!

Recently I got for free an old Zeiss Super Ikonta 531/2, it's a medium format foldable camera from 1936. It was in decent shape but the lens was very foggy. Fungi can grow on lenses but I think it was just general dirt. Opening it was a bit tricky (I had to get watching-making tools, because the screws are very tiny) but I managed to clean the lenses quite well. I shot a first roll but the focus was off, so I had to make sure the front lens element was at the right distance, using some semi-transparent tape on the back of the camera to see the image.

Then I shot a second roll and developed it myself, which was also a first (it's not super hard though), I had no idea if the images would come out good, or even at all (wasn't even sure I loaded the developing tank correctly). Seeing the images come out of the tank for the first time is quite magical, and they came out great (some of them at least...) :

https://imgur.com/a/bF817x9

Even with my crappy development & scanning I can get high-res images that compete with my expensive digital camera. The lens (Tessar 105mm, f3.8) is quite sharp wide open (statue shot) and I even took a long exposure shot at night using a release cable. The process is very slow and focusing is hard, but it's quite fun and rewarding. These kind of cameras are very cheap but the rest (film, accessories, development, repairs, ...) not so much.