[Seaside] Seaside: children problem

[Rajeev Lochan]

hi,
Have you defined/declared menu as an instance variable in class Site (I hope
thats the class n ame for the first set of code). It would be clear if you
can provide that info.

The error you have got is due to the fact that the method
children
^ Array with: menu

is not triggered properly.

Update if you still encounter any problem,
Hope that helps,
Rajeev

On Dec 29, 2007 5:48 PM, an organic <seasidebeginner at gmail.com> wrote:

> Hello,
>
> i am new with seaside and i want make this demo:
>
> class Site root component:
>
> children
>     ^ Array with: self menu
>
> renderContentOn: html
>     html div class: 'site'; with: [
>         html div class: 'menu'; with: self menu.
>         ]
>
> initialize
>     super initialize.
>
>     menu := Menu2 new.
>
> +canberoot and accessors for menu
>
>
> class Menu2 instance variables: items
> initialize
>     super initialize.
>     items := OrderedCollection new.
>     items
>         add: (Item new value: '1').
>     items
>         add: (Item new value: '2').
>     items
>         add: (Item new value: '3')
>
> renderContentOn: html
>     html
>         unorderedList: [items do: [:item | html div class: 'a'; with:
> (SubMenu new item: item) ]]
>
> class Item instanceVar value
> renderContentOn: html
>     html text: value.
>
>
>
> WAComponent subclass: #SubMenu
>     instanceVariableNames: 'item itemEditor'
>     classVariableNames: ''
>     poolDictionaries: ''
>     category: 'Pom'
>
> editItem: aItem
>     self itemEditor item: aItem copy.
>     (self call: self itemEditor)
>         ifTrue: [aItem copyFrom: self itemEditor item]
>
> initialize
>     super initialize.
>
>     itemEditor := ItemEditor new.
>
> renderContentOn: html
>     html
>         listItem: [html text: ' a ' , self item value.
>             html anchor
>                 callback: [self editItem: self item];
>                  with: 'e']
>
> and itemEditor, i think editors is fine.
>
> i think problem is in menu2 when i create new object subMenu because when
> i click on 'e' and i want edit item i get error:
>
> Possible Causes
>
>    - you do not implement #children correctly
>    - you do not backtrack #children correctly
>    - you do not implement #states correctly
>
> Stack Trace
>
>    1. thisContext<http://localhost:8080/seaside/site?_s=sVPLwysvyCJwWnRw&_k=aILgLVQn&3>
>    WARenderContinuation>>componentsNotFound:self<http://localhost:8080/seaside/site?_s=sVPLwysvyCJwWnRw&_k=aILgLVQn&4>a
>    WARenderContinuation aCollection<http://localhost:8080/seaside/site?_s=sVPLwysvyCJwWnRw&_k=aILgLVQn&5>an
>    Array(a SubMenu)
>    2. thisContext<http://localhost:8080/seaside/site?_s=sVPLwysvyCJwWnRw&_k=aILgLVQn&6>WARenderContinuation>>unprocessedCallbacks:
>    self<http://localhost:8080/seaside/site?_s=sVPLwysvyCJwWnRw&_k=aILgLVQn&7>a
>    WARenderContinuation aCollection<http://localhost:8080/seaside/site?_s=sVPLwysvyCJwWnRw&_k=aILgLVQn&8>an
>    Array(a WAActionCallback)owners<http://localhost:8080/seaside/site?_s=sVPLwysvyCJwWnRw&_k=aILgLVQn&9>an
>    Array(a SubMenu) each<http://localhost:8080/seaside/site?_s=sVPLwysvyCJwWnRw&_k=aILgLVQn&10>a
>    WAActionCallback
>    3. thisContext<http://localhost:8080/seaside/site?_s=sVPLwysvyCJwWnRw&_k=aILgLVQn&11>
>    WARenderContinuation>>processCallbacks: self<http://localhost:8080/seaside/site?_s=sVPLwysvyCJwWnRw&_k=aILgLVQn&12>a
>    WARenderContinuation aRequest<http://localhost:8080/seaside/site?_s=sVPLwysvyCJwWnRw&_k=aILgLVQn&13>a
>    WARequest GET /seaside/sitelastPosition<http://localhost:8080/seaside/site?_s=sVPLwysvyCJwWnRw&_k=aILgLVQn&14>
>    0 callbackStream<http://localhost:8080/seaside/site?_s=sVPLwysvyCJwWnRw&_k=aILgLVQn&15>a
>    WACallbackStreameach<http://localhost:8080/seaside/site?_s=sVPLwysvyCJwWnRw&_k=aILgLVQn&16>a
>    WAToolFrame
>    4. thisContext<http://localhost:8080/seaside/site?_s=sVPLwysvyCJwWnRw&_k=aILgLVQn&17>[]
>    in WARenderContinuation>>handleRequest: {[self processCallbacks: aRequest]}
>    self<http://localhost:8080/seaside/site?_s=sVPLwysvyCJwWnRw&_k=aILgLVQn&18>a WARenderContinuation
>    aRequest<http://localhost:8080/seaside/site?_s=sVPLwysvyCJwWnRw&_k=aILgLVQn&19>a
>    WARequest GET /seaside/site r<http://localhost:8080/seaside/site?_s=sVPLwysvyCJwWnRw&_k=aILgLVQn&20>
>    nil
>    5. thisContext<http://localhost:8080/seaside/site?_s=sVPLwysvyCJwWnRw&_k=aILgLVQn&21>
>    BlockContext>>on:do: self<http://localhost:8080/seaside/site?_s=sVPLwysvyCJwWnRw&_k=aILgLVQn&22>[]
>    in WARenderContinuation>>handleRequest: {[self processCallbacks: aRequest]}
>    exception<http://localhost:8080/seaside/site?_s=sVPLwysvyCJwWnRw&_k=aILgLVQn&23>an
>    ExceptionSet handlerAction<http://localhost:8080/seaside/site?_s=sVPLwysvyCJwWnRw&_k=aILgLVQn&24>[]
>    in WARenderContinuation>>withNotificationHandler: {[:n | n]}handlerActive<http://localhost:8080/seaside/site?_s=sVPLwysvyCJwWnRw&_k=aILgLVQn&25>
>    true
>
>
>
> I hope it's quite clear. Thnx for help
>
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>
>


-- 
Rajeev Lochan

Co-founder, AR-CAD.com

http://www.ar-cad.com
+91 9243468076 (Bangalore)
080 65355873
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