Re: [flexcoders] Re: Flex 1.5 - n checkboxes

Mon, 07 Nov 2005 16:33:33 -0800

Thanks, Matt. I was working on such a loop, but I like that valueCommitted idea better. But I haven't been able to figure out how to trigger valueCommitted for the checkboxes, since there is no focus to be lost.

- Richard

On 11/3/05, Matt Chotin <[EMAIL PROTECTED]> wrote:

So there will be an array on your document called role and you could loop through it and grab the name and selected state.

 

Var selectedRoles:Array = [];

For (var i:Number=0; I < role.length; i++)

{

  If (role[i].selected)

  {

    selectedRoles.push([role[i].label);

  }

}

 

But yes, it's better to store these things in a Model or just update the user directly:

 

<mx:CheckBox id="role" label="{rolesList.currentItem}" selected="{user.hasRole(rolesList.currentItem)}" valueCommitted="user.setRole(event.target.getRepeaterItem(), event.target.selected)" />

 

Matt

 

From: flexcoders@yahoogroups.com [mailto:flexcoders@yahoogroups.com] On Behalf Of Richard Rodseth
Sent: Wednesday, November 02, 2005 4:40 PM
To: flexcoders@yahoogroups.com
Subject: Re: [flexcoders] Re: Flex 1.5 - n checkboxes

 

No, my requirements are simple. An "Edit User" panel with checkboxes for all the roles the user has.

I have the check boxes rendering as follows

         <mx:Repeater id="rolesList" dataProvider="{allroles}">

            <mx:CheckBox id="role" label="{rolesList.currentItem}" selected="{user.hasRole(rolesList.currentItem)}" />

        </mx:Repeater>

Now, I need to submit the form, and call user.setRoles() with an array of the the checked roles. Right now there roles are just strings, but they should probably be Role objects.
Presumably I will need a submit handler that iterates over the checkboxes looking at their selected state and building the array of checked ones. I don't know how to do that yet, but I'm sure I can figure it out.
It would be nifty if there was a more automatic way to do this.

Thanks,
Richard

On 11/2/05, Brendan Meutzner <[EMAIL PROTECTED]> wrote:

Hi Richard,

I recently completed a project in which we had to dynamically build
form selection elements based on different control types (eg.
checkboxes, radio buttons, etc...).  The data model we worked with
provided us with the string name of the control type to use, and the
appropriate data structure to populate the control type(s).  Solution
I came up with was to (as you mention you might have to do) create the
form elements using actionscript, more specifically the createChild
method.  I created a custom instance of each control type, and added
some additional properties to it, the most important being the data
property it needed to affect.  Inside the custom control, I had my
change event directly modify the data property that was passed in.
Because the reference was passed in, this essentially "bound" that
change to the data model it came from.  Problem solved.

Your requirements may be slightly different as it sounds like you
already know what type of control you need to render.  In this case, I
would imagine you could use a repeater tag and have it's children be
the custom "check box" you're creating, and pass in the object
property reference that needs to be changed.

Hope this helps you...


Brendan


--- In flexcoders@yahoogroups.com, Richard Rodseth <[EMAIL PROTECTED]> wrote:
>
> Yes, as I mentioned, I am using the repeater tag. But the data
provider for
> it is the list of all possible roles. I'm interested in the process of
> mapping the checked items to an array of objects (strings or value
objects).
> I'm guessing there's no way around using Actionscipt to populate the
form
> from the model and vice versa.
>
> - Richard
>
> On 11/2/05, Matt Chotin <[EMAIL PROTECTED]> wrote:
> >
> >  Check out the Repeater tag.
> >
> >   ------------------------------
> >
> > *From:* flexcoders@yahoogroups.com
[mailto:flexcoders@yahoogroups.com] *On
> > Behalf Of *Richard Rodseth
> > *Sent:* Wednesday, November 02, 2005 9:07 AM
> > *To:* flexcoders@yahoogroups.com
> > *Subject:* [flexcoders] Flex 1.5 - n checkboxes
> >
> >  Is there a slick way to bind a variable number of checkboxes to
an array
> > of value objects in a data model?
> >
> > Example: user has an array of roles. Display a list of checkboxes
> > I see how to use repeaters to render the checkboxes, but I'm
unclear on
> > the best way to capture the user selections.
> >
> > Thanks
> >
> >
> >
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