How long did it take you the first time, and how long did it take you to remake? If you break down by part it's helpful too, like how long the rails portion took, how long it took to convert to Elixir and then implement Vue, etc.
That's a great question, and one I'm going to struggle to answer. Like I said, it was my first Rails project, and I wasn't even attempting to have any sort of tests. The project was developed piecemeal, and then reworked a few times (e.g. adding polymorphism for the different video types, tiny bit of meta programming etc.)
Converting to Phoenix I found pretty straightforward, however, that was _after_ I had spent 3ish weeks going through the Programming Elixir & Phoenix books, so you'd want to factor in time to get up to speed with the language. I found working with Vue very straightforward, I found setting up the browserify development environment with Phoenix & Vue _hard_. Well, tricky anyway. For example, starting up the node processes to watch & rebuild the assets, reload the code in the browser, and getting that to start & stop automatically when you run `mix phoenix.server`, things like that took ages for me to work out, but it'd be way quicker now.
I also found Ecto a bit of a mind-bender to begin with. I'm certainly not holding up my code as a paragon of "the right way to do things" ;) Working out a neat way to do polymorphism in Elixir took me a little time. It's my first functional language so that all took time to get up to speed with (and even then I'm no expert)
Finally, using a client-side framework is total overkill for what is essentially a bog standard client-side app. But I wanted to get to grips a bit with Vue, websockets, and I really wanted to play with Elixir (I'd love to get work in it someday).
You can see the entire git-history if you want to see _roughly_ how long I was spending. I'd still be quicker to build in Rails I'm sure, but, I'd say once I was practiced at Elixir it'd be roughly the same amount of time building in either, and the websocket & ease of integration of JavaScript tooling (pre Rails 5) is definitely better with Phoenix. Converting the Vue was easy though, that just ported as-is (definitely a benefit of only talking JSON)
Anyway, sorry not to be able to give a proper answer.
