[Seaside] Forms - Select List: action before submit button

[dirk newbold]

Thanks very much - I'll give it a go.

Cheers,

Dirk

On 6/12/07, Cédrick Béler <cbeler at enit.fr> wrote:
> dirk newbold a écrit :
> > All,
> >
> > http://ajax.asp.net/ajaxtoolkit/CascadingDropDown/CascadingDropDown.aspx
> >
> > I found the exact example I am trying to achieve as per this ajax link
> > above.
> >
> > I'm guessing Seaside has same deal but can't see to make anything work
> > - I'm new at all this.
> >
> > Thanks,
> >
> > Dirk
> I think you have to use the updater and onChange() event to realize
> that... in 3 different select...
> have a look at SUClassBrowser renderCategoriesOn: html...   or see
> implementors of #updater
> Also, there was a similar stuuf with SeasideAsync but if you use only
> scriptaculous, this should be somethink like (not tested):
>
> renderContentOn: html
> html div
>     id: 'box1';
>     with: [self renderBox1On: html].
> html div
>     id: 'box2';
>     with: [self renderBox2On: html].
> html div
>     id: 'box1';
>     with: [self renderBox3On: html].
>
>
> renderBox1On: html
>     html select
>         id: 'box1';
>         selected: self val1;
>         list: self list1;
>         callback: [:valBox1 | self val1 := valBox1]
>         onChange: (hmtl updater
>                             id: 'box2';    "on change,   update the box
> named box2"
>                             triggerFormElement: 'box1'   "also triger
> the action associated to that form element.... self val1 := valBox1
> ort whaterver..."
>                             callback: [:render | self renderBox2On:
> render].   " the box is redrawn with the rendering fonction renderBox3"
>                             onSuccess: (html updater   "don't forget to
> upadate the last box..."
>                                     id: 'box3';
>                                    callback: [:render | self
> renderBox3On: render])
>
> renderBox2On: html
>     html select
>         id: 'box2';
>         selected: self val2;
>         list: self list2;
>         callback: [:valBox2 | self val2 := valBox2]
>         onChange: (hmtl updater
>                             id: 'box2';
>                             triggerFormElement: 'box2';
>                             callback: [:render | self renderBox3On: render]
>
> renderBox3On: html
>     html select
>         id: 'box3';
>         selected: self val3;
>         list: self list3;
>         callback: [:valBox3 | self val3 := valBox3]
>         onChange: (hmtl request
>                             triggerFormElement: 'box2']  "only trigger
> the callback associated to id box3... no rendering needed..."
>
>
> hth
>
> Cédrick
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