Re: [web-devel] Re: Runtime Hamlet template parsing/rendering

On Fri, Aug 6, 2010 at 2:06 PM, Michael Snoyman wrote:

On Fri, Aug 6, 2010 at 3:13 AM, Simon Michael wrote:

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On 8/5/10 12:57 AM, Michael Snoyman wrote:

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Thanks for the input everyone. I've just pushed the new Hamlet runtime code to github[1]. Instead of using data-object, I've created a new datatype: HamletData[2]. Runtime templates support *almost* the entirety of valid Hamlet documents;

Excellent! With the following kludgery I was able to change hamlet files and see the effect immediately. A boon for development. Useful parse errors in the browser too. It's not all smooth of course. Including other hamlets and integrating RT and non-RT hamlets seems a lot of work.

It's true that none of this interoperation will be automatic, but it's possible. Regarding: including other hamlets, you just need to parse them first and then include them in your HamletData. Regarding integrating RT and non-RT: I would say your best bet it to do that via Html (). In other words, apply the template to the URL rendering function, resulting in a Html () value, and then embed that in the template you desire.

For the moment, RT templates are definitely second-class citizens, but if people have ideas of how to improve them, I'd be happy to hear it.

Michael

I had a sudden inspiration yesterday of how to improve runtime Hamlet templates. This should give you a lot of the benefits of compile-time templates without requiring a recompile for every change. I've written this up in a blog post[1]. Michael [1] http://www.snoyman.com/blog/entry/typesafe-runtime-hamlet/