Elm and Yesod

[Evan Czaplicki]

Hi everyone,

We were recently discussing integrating Elm and Yesod in this reddit thread. tazjin has already made significant steps in this direction (see Quasi.hs, Yesod.hs, and an example) which I am really excited about. I just wanted to let everyone know what was going on so far and provide a place for further suggestions and discussion.

Best,

Evan

[Michael Snoyman]

I share your excitement, this looks really good! One change I could
imagine is providing a QQ and TH function that combines elm/elmFile
with elmWidget and exporting that from the .Yesod module. I'm hoping I
get more of a chance to look into this over the next few days.

Michael

[Greg Weber]

I whipped up shakespearean templates for Elm. I did this while eating
breakfast: it is really easy to make a pass-through shakespeare
template.
https://github.com/yesodweb/shakespeare/tree/master/shakespeare-elm
I even got the test suite running, although it still has javascript in
the files.

I put a dependency on Elm, although at the moment it is not needed.
There is a ToElm typeclass for the conversion.
In the future for the javascript based templates we are planning on
moving from text-based insertion to JSON based insertion.
You might have different ideas for Elm.

With this and the Widget instance one should be able to quasi-quote as usual:

toWidget [elm| ... ]

[Vincent Ambo]

That's really nice, I knew there was a way to create own shakespeare templates but had not bothered to dive into it yet.

Would you mind if we actually merged this into the upstream elm package?

[Greg Weber]

yes, please put this in the elm repo and take ownership. Currently
there is no real Elm dependency, which would make it easy to keep in
the shakespeare repo. However, I have a feeling this might change in
the future.

[Vincent Ambo]

Okay, it's on its way: https://github.com/tazjin/Elm/commit/e0aa5c5885f7deb7ef5945fa58e1ab9a6dfaa517

Next up: Widget instance. 

[Evan Czaplicki]

I'd be happy to put this in the Elm repo. I'm talking to Vincent about this now. Thank you! You guys work at a truly furious pace :)

Best,

Evan