[aida] Dropdown menus

Janko Mivšek janko.mivsek at eranova.si
Mon Oct 15 14:09:04 CEST 2007


Dirk,

Dirk Verleysen wrote:

> I'm doing this and the updates to the domain are done but the WebElement 
> that should be refreshed is simply removed. When I refresh the page it's 
> returned on the browser with the updated fields.

Be sure that an updatable element is in the separate method and not 
simply one of the elements in a method. This method must also return 
just that element.

This is a rule for Ajax updatable elements - they must reside each in 
its own method.

Best regards
Janko

> 
> ----- Original Message ----- 
> From: "Janko Mivšek" <janko.mivsek na eranova.si>
> To: "AIDA/Web general discussion list" <aida na aidaweb.si>
> Sent: Monday, October 15, 2007 11:35 AM
> Subject: Re: [aida] Dropdown menus (was: addMenuAspect:...)
> 
> 
>> Dirk Verleysen wrote:
>>> Can I send an event after an item in the menu is selected ? I want 3 
>>> menus
>>> on 1 form and the collection of the 2nd menu is dependent on the 
>>> selection
>>> of the first menu. The collection of the 3th menu is created after you 
>>> know
>>> what was selected in the 2nd menu.
>> This is very common pattern and very nicely solved with Ajax updating of
>> an element containing all three menus. For that you use
>> onChangePostAndUpdate: on your menus:
>>
>> menusElement
>>   | e |
>>   e := WebElement new.
>>
>>   menu1 := WebMenu aspect: ....
>>   menu1 onCangePostAndUpdate: e.
>>   e add: menu1; addBreak.
>>
>>   menu2 := WebMenu aspect: ....
>>   menu2 onCangePostAndUpdate: e.
>>   e add: menu2; addBreak.
>>
>>   menu3 := WebMenu aspect: ....
>>   e add: menu3.
>>   ^e
>>
>> Janko
>>
>>> ----- Original Message ----- 
>>> From: "Janko Mivšek" <janko.mivsek na eranova.si>
>>> To: "AIDA/Web general discussion list" <aida na aidaweb.si>
>>> Sent: Monday, October 15, 2007 10:58 AM
>>> Subject: Re: [aida] addMenuAspect:collection:selectedToAspect:of:
>>>
>>>
>>>> Hi Dirk,
>>>>
>>>> Dirk Verleysen wrote:
>>>>
>>>>> Is there an example of this available ? I guess I can use this to 
>>>>> create
>>>>> a kind of dropdownlist ?
>>>> In HTML it called menu
>>>> http://www.w3.org/TR/REC-html40/interact/forms.html#h-17.6. In Aida
>>>> there is a WebMenu and here s short example of usage:
>>>>
>>>>
>>>> menu := WebMenu
>>>>   aspect: #name
>>>>   collection: self authors
>>>>   selectedToAspect: #author
>>>>   of: self.
>>>>
>>>> or with convenience method:
>>>>
>>>> anElement addMenuAspect:collection:selectedToAspect:of:
>>>>
>>>>
>>>> Here you select an author by name from self authors and save selected
>>>> object (not a name string!) to aspect #author (this calls
>>>> accessor/mutator #author and #author: ) of self. Note that if there is
>>>> author selected from before, it will be preselected.
>>>>
>>>>
>>>>> I use "anElement addMenuAspect: #name collection: self observee
>>>>> seasonColl selectedToAspect: #season of: self observee." but by the 
>>>>> time
>>>>> my HTML is generated my aspectToStore has become #name and my
>>>>> objectToStore is nil.
>>>> And this you already solved by yourself.
>>>>
>>>> Best regards
>>>> Janko
>> -- 
>> Janko Mivšek
>> AIDA/Web
>> Smalltalk Web Application Server
>> http://www.aidaweb.si
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>> Aida mailing list
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>>
> 
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-- 
Janko Mivšek
AIDA/Web
Smalltalk Web Application Server
http://www.aidaweb.si


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