We need to build a pulldowns (select list boxes) on the front end (select
lists, check boxes etc) and do not want to write a getter for each one. We
simply want a generic method that we call throughout the application called
"getList(String s).
String s is a key into a types table that, when used for the query will
return everything needed in the list.
I thought this would be the simplest approach instead of having to write a
method that sets a string and passes it to a function that builds
List<SelectItem>.
It would be better to simply have the String s in the XHTML, that calls 1
method (used throughout the app) that will build and return the
List<SelectItem> based on the string (param) in the XHTML.
at first look it seems like <f:param> would work but I can not seem to get
this to work to pass any params to my backing bean.
L
Simon Kitching-3 wrote:
>
> I don't think you're going to be able to do this; it isn't natural JSF
> style. JSF el expressions don't support parameters.
>
> You should look at other approaches to resolve whatever your problem is.
>
> Regards,
>
> Simon
>
> Lisa wrote:
>>
>> I looked at the docs on this tag <f:param> but there were no examples on
>> how
>> to pass a String param to the getters in the value="#{bean.getMethod}"
>>
>> I want to pass a string to getMethod(String s) listed above. If you have
>> any specific examples on how to do this, it would be greatly appreciated.
>>
>>
>> L
>>
>>
>>
>> Lisa wrote:
>>> I want to build a SelectItem list by calling a method in my backing
>>> bean,
>>> but I want to be able to pass the backing bean a String (from the
>>> XHTML).
>>>
>>>
>>> ---
>>> This is what I currently have:
>>>
>>> <h:selectOneListbox
>>> rendered="#{carBean.listMode}"
>>> id="idSelectVehicleType"
>>> value="#{carBean.vehicleType}"
>>> size="1">
>>>
>>> <f:selectItems id="idCarBeanTypeList"
>>> value="#{carBean.vehicleTypeList}"/>
>>> </h:selectOneListbox>
>>>
>>> where vehicleTypeList is a method in CarBean.getVehicleTypeList()
>>>
>>> ---
>>> So I want to change the method signature to accept a String like so:
>>>
>>> CarBean.getVehicleTypeList(String s)
>>>
>>> and in the XHTML pass String s to CarBean.getVehicleTypeList(String s).
>>>
>>> Is this possible?
>>> value="#{carBean.vehicleTypeList("myString")}"
>>>
>>>
>>> thanks
>>>
>>>
>>> Lisa
>>>
>>
>
>
>
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