Comments on: ErlyWeb Tutorial: Life In the Intersection of FP and Dynamic HTML http://yarivsblog.com/articles/2007/02/23/erlyweb-tutorial-life-in-the-intersection-of-fp-and-dynamic-html/ Adventures in Open Source Erlang Fri, 16 May 2008 04:48:39 +0000 http://wordpress.org/?v=2.5.1 By: Aidan http://yarivsblog.com/articles/2007/02/23/erlyweb-tutorial-life-in-the-intersection-of-fp-and-dynamic-html/#comment-21900 Aidan Tue, 10 Apr 2007 22:40:14 +0000 https://admin.yarivsblog.com/articles/2007/02/23/erlyweb-tutorial-life-in-the-intersection-of-fp-and-dynamic-html/#comment-21900 wow, that's a really elegant solution. I'm just coming back to look at Erlyweb(db, etc) again after having spent a bit of time figuring out Erlang properly. I'm amazed with how clean, simple and flexible it is. I'll try to contribute something a bit more useful once I've gotten my head around all the stuff it can do :) wow, that’s a really elegant solution.

I’m just coming back to look at Erlyweb(db, etc) again after having spent a bit of time figuring out Erlang properly. I’m amazed with how clean, simple and flexible it is.

I’ll try to contribute something a bit more useful once I’ve gotten my head around all the stuff it can do :)

]]> By: Brian Olsen http://yarivsblog.com/articles/2007/02/23/erlyweb-tutorial-life-in-the-intersection-of-fp-and-dynamic-html/#comment-13769 Brian Olsen Sat, 03 Mar 2007 20:35:43 +0000 https://admin.yarivsblog.com/articles/2007/02/23/erlyweb-tutorial-life-in-the-intersection-of-fp-and-dynamic-html/#comment-13769 I was debating that in my head, using something like Mod = element(1, Rec) as a way to infer what module should be used. But, my assumption relied on the possibility that it would fit in as a utility within ErlyDB, and the programming model that ErlyDB poses. Either way, the idea is valuable. :) I was debating that in my head, using something like Mod = element(1, Rec) as a way to infer what module should be used. But, my assumption relied on the possibility that it would fit in as a utility within ErlyDB, and the programming model that ErlyDB poses.

Either way, the idea is valuable. :)

]]> By: Yariv http://yarivsblog.com/articles/2007/02/23/erlyweb-tutorial-life-in-the-intersection-of-fp-and-dynamic-html/#comment-13384 Yariv Fri, 02 Mar 2007 02:18:15 +0000 https://admin.yarivsblog.com/articles/2007/02/23/erlyweb-tutorial-life-in-the-intersection-of-fp-and-dynamic-html/#comment-13384 I like the idea... but I think that instead of generating such functions with ErlyDB, it would be easier to provide a function in erlyweb_util such as follows <code><br /> get_view_closure(Rec) -><br />   Mod = element(1, Rec),<br />   fun(Field) -><br />     erlydb_base:field_to_iolist(Mod:Field(Rec))<br />   end.<br /> </code> It does the trick without any code generation. I like the idea… but I think that instead of generating such functions with ErlyDB, it would be easier to provide a function in erlyweb_util such as follows


get_view_closure(Rec) ->
  Mod = element(1, Rec),
  fun(Field) ->
    erlydb_base:field_to_iolist(Mod:Field(Rec))
  end.

It does the trick without any code generation.

]]> By: Brian Olsen http://yarivsblog.com/articles/2007/02/23/erlyweb-tutorial-life-in-the-intersection-of-fp-and-dynamic-html/#comment-13037 Brian Olsen Wed, 28 Feb 2007 20:04:48 +0000 https://admin.yarivsblog.com/articles/2007/02/23/erlyweb-tutorial-life-in-the-intersection-of-fp-and-dynamic-html/#comment-13037 Just an idea, generated after posting my last comment: since this is such a good approach, maybe to save a few keystrokes and make this good idea as a standard, maybe a function that returns a function similar to what you wrote would be useful? make_field_strings(module, Record) -> fun(Field) -> erlydb_base:field_to_iolist(Module:Field(Record)) end. then controller functions return: {data, language:make_field_strings(Language)} (forgive the poor naming of the function :)) Just an idea, generated after posting my last comment: since this is such a good approach, maybe to save a few keystrokes and make this good idea as a standard, maybe a function that returns a function similar to what you wrote would be useful?

make_field_strings(module, Record) ->
fun(Field) ->
erlydb_base:field_to_iolist(Module:Field(Record))
end.

then controller functions return:

{data, language:make_field_strings(Language)}

(forgive the poor naming of the function :))

]]> By: Brian Olsen http://yarivsblog.com/articles/2007/02/23/erlyweb-tutorial-life-in-the-intersection-of-fp-and-dynamic-html/#comment-13034 Brian Olsen Wed, 28 Feb 2007 19:54:47 +0000 https://admin.yarivsblog.com/articles/2007/02/23/erlyweb-tutorial-life-in-the-intersection-of-fp-and-dynamic-html/#comment-13034 What an interesting approach. I originally came up with a hacked together approach to handle the undefined problem, but your approach is much more concise (given in-depth knowledge in erlydb :) ) What an interesting approach. I originally came up with a hacked together approach to handle the undefined problem, but your approach is much more concise (given in-depth knowledge in erlydb :) )

]]> By: AJxn http://yarivsblog.com/articles/2007/02/23/erlyweb-tutorial-life-in-the-intersection-of-fp-and-dynamic-html/#comment-12601 AJxn Tue, 27 Feb 2007 04:22:05 +0000 https://admin.yarivsblog.com/articles/2007/02/23/erlyweb-tutorial-life-in-the-intersection-of-fp-and-dynamic-html/#comment-12601 (or functions generated by ErlyDB) directly. Do do this, we can go the “traditional” Misstyped "To" as "Do", and that is the only "fault" i found :) (or functions generated by ErlyDB) directly. Do do this, we can go the “traditional”

Misstyped “To” as “Do”, and that is the only “fault” i found :)

]]> By: ludo http://yarivsblog.com/articles/2007/02/23/erlyweb-tutorial-life-in-the-intersection-of-fp-and-dynamic-html/#comment-12111 ludo Sat, 24 Feb 2007 05:07:32 +0000 https://admin.yarivsblog.com/articles/2007/02/23/erlyweb-tutorial-life-in-the-intersection-of-fp-and-dynamic-html/#comment-12111 Again a great tutorial! I really like your style to propose a simple problem and solve it part by part, doing and correcting mistakes along the path to the final solution. Thanks. Again a great tutorial!
I really like your style to propose a simple problem and solve it part by part, doing and correcting mistakes along the path to the final solution.
Thanks.

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