[web-devel] Re: anybody have toy examples of using digestive functors formlets lib?

Hey guys, For the theming stuff: I was sort of thinking of running the entire form in a Reader monad, so you can configure the id and class attributes for all the different form elements. You can then style it using CSS. I hope to implement some of this stuff this weekend at BelHac, if I find some time... Cheers, Jasper On Sat, Nov 6, 2010 at 4:40 AM, Jeremy Shaw wrote:

Hello,

I have a attached a little demo that shows how I like to use digestive functors. The primary issue right now is that it does not work correctly if you try to put more than one formlet on a page. (due to an issue in my code). It is fixable -- I just have not had the time and need quite yet. Though, if you can skip the use of digestiveFunctorPart and use digestive-functors-hsp the 'normal' way.

To run the demo you will need:

 - lastest happstack from darcs  - lastest digestive-functors from git, https://github.com/jaspervdj/digestive-functors  - lastest digestive-functors-hsp from darcs, http://src.seereason.com/digestive-functors-hsp

Furthermore, you will need to edit the digestive-functors.cabal file and change, monads-fd to mtl < 2. That will change later this week when I switch happstack from mtl to monads-fd. (Or *you* could patch happstack to use monads-fd and send me a patch). If you do not make that change, then you will get an overlapping instance error regarding MonadPlus IO.

If you do not want to update to the lastest happstack, you will just have to look at the attached code and reverse engineer what you want to do. Though, I recommend upgrading to happstack from darcs. It will break your code, but I think I made all the code breaking changes for the next release, so you can get it over with now :p Or, if you are using it for a new project, you can start with the good stuff and not have to upgrade it later. The happstack crash course documents the darcs version of happstack.

I will eventually add a section to the happstack crash course on this technology. But until then, I hope this gets you started.

Note that the rendering is ugly because there is no CSS applied. You can use 'setAttr' in the digestive-functors-hsp library to set some class attributes and then apply some CSS to pretty things up. Also, jaspervdj mentioned something in the README about better ways to theme a form than what formlets offered. I have no idea what that refers too. But maybe it is better than using setAttrs.

Note that both digestive-functors and digestive-functors-hsp are very new. If you think something about them is wacky, please let us know. Don't assume that when meant for things to be stupid.

- jeremy

On Fri, Nov 5, 2010 at 6:32 PM, Thomas Hartman wrote:

...

anybody have toy examples of using digestive functor library? Especially with hsp, which is my usual templating system these days? A couple of people have recommended this library to me but I don't see any easy way to get started using it. Toy example would be great. Thanks a bunch! thomas.