[Haskell-beginners] Options for creating a multiple select form via Yesod

Michael Snoyman michael at snoyman.com
Fri Jun 10 07:05:40 CEST 2011

Hi Michael,

There's nothing jQuery or Javascript specific about a multi-select
field: it's just a normal select field with a "multiple" attribute. I
would recommend taking the selectField code from yesod-form and
modifying it to be multi-select. I'll likely do this myself
eventually, but it could be a good learning experience in Yesod (and a
great introduction to contributing to the framework if you're so


On Thu, Jun 9, 2011 at 8:29 PM, Michael Litchard <michael at schmong.org> wrote:
> I'm trying to create a multiple select form, as illustrated on the following:
> http://api.jquery.com/selected-selector/
> Here's the options I see possible:
> (1) Write a jQuery widget.
> (2) Use plain javascript via Julius
> (3) Use the low-level functions in Yesod.Form to write a widget
> (4) Use a pre-existing function that does what I need, but am not
> aware of this functionality
> (1) has appeal as it looks like something small I can contribute to
> the project. It will take me some extra time to figure out the
> details. But, I had a look at the other jQuery widgets and they seem
> to provide an approachable model to follow.
> (2) This looks like the most straight-forward approach. I'm just
> learning javascript so would have to figure out how to capture values
> in Haskell from the form.
> (3) This looks like the most difficult way. I don't think I know
> enough about the low-level functions in Yesod.Form to be able to
> accomplish this in a timely manner.
> (4) This is the best scenario. There's already a way to do this right
> now, and I just haven't identified it. If this is the case, I would
> appreciate being pointed in the right direction.
> Until informed otherwise, I'm evaluating options 1 and 2. All feedback
> welcomed. Thanks to all who made Yesod possible.
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