[Seaside] Validating inputs before calling callback using AJAX serialization

[Paul DeBruicker]

In your Seaside callback: could you do a

html anchor
    callback:[:val | self validateWith: [:v | self validateOutsideInput: v]
thenExecute: [:v | self myOriginalCallbackMethods: v] for: val]


and 

validateWith: validationBlock thenExecute: callbackBlock for: submittedValue
   (validationBlock cull: submittedValue) ifTrue:[callbackBlock cull:
submittedValue]


?

I don't really understand what happens when callbacks are executed from the
seaside perspective that would want you to keep it from executing.  The pile
of stuff I don't understand grows daily though :)

Hope this helps


Paul




Esteban A. Maringolo wrote
> Hi all,
> 
> I'm trying to find a clean and "proper" way of dealing with the validation
> of user entered values in forms _before_ they hit the callback block.
> 
> And based on such validation result be able to respond one script or
> another.
> 
> Let's say I have something like
> 
> html textInput
>   onChange: (html jQuery ajax serializeThis);
>   script: (html jQuery script: [:s | "fancy things that modify the web UI"
> ];
>   callback: [:value | self doSomethingWithValue: value]
> 
> The problems with that are:
> a) I can't "sanitize" the input before it reaches the callback block, I
> have to do it within the callback block.
> b) I have no way to return one script for a successful validation, and one
> for a failing one.
> 
> I'd like something like
> 
> A)
> html textInput
>   onChange: (html jQuery ajax
>     serializeThisValidating: validationBlock
>     successScript:  [:s | "fancy things that modify the web UI" ]
>     failureScript:  [:s | "modify the web UI reporting the failure" ]);
>   callback: [:value | self doSomethingWithValue: value]
> 
> or...
> B)
> html textInput
>   onChange: (html jQuery ajax serializeThis);
>   callback: [:value | self doSomethingWithValue: value ]
>   validation: aBlock
>   successScript: [:s | "fancy things that modify the web UI" ]
>   failureScript:   [:s | "modify the web UI reporting the failure" ].
> 
> 
> I think that the A option is the best alternative, since all the "special
> handling" will happen in the context of the JQAjax and maybe a special
> kind
> of JSAjaxCallback).
> 
> Also I don't know how this would work in the context of _several_
> validated
> callbacks, but I plan to make it work in the context of #serializeThis
> only.
> 
> But I'm sure there is a simpler way of achieving this, since I tend to
> make
> things complicated.
> 
> Any suggestions?
> 
> 
> Esteban A. Maringolo
> 
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