Salut Volker,
(1) sorry to say this, but i need exactly an altering rendering
of different controls. My job is to bring an Excel-Sheet
into a web application, so -hello- the source (was) excel.
Finally, it is not a true table that needs to be transfered.
It is called a sheet, with a head, some groups of multiple-choice
questions, that may consist of radio or check boxes and/or
text fields, separated by some (sub) sections, that
last not least will span over some colums.
The layout of that sheet is data driven, somewhere in
two database tables (the definition) and some other
the values. The contents of questions may vary from
associated context.
So what we did, we defined a couple (~~6) template
viewer, that define some viewer, that i have to switch-on/off
in dependency of the viewer-type, that is availiable for each row.
(2) Now to your argumentation:
Volker Weber-5 wrote:
>
> Or how would you expect e.g. exel to render a column in one row but
> not in the next?
>
>From the technical point of view, your comment is
not absolutly correct, cause each row does contain
exactly the same content as the other rows. By using the
rendered attribute i only tell the presentation layer not to
show theses elements on screen, but -in fact- they exist!!!
-finally this is my view, but not yours and you coded it!! -
(3) So maybe the tc:sheet is not the appropriate way for a viewer,
but ok, i am flexible. I decided to use a tc:sheet, cause it
give me a common layout for indentation, but maybe a facelet
could do this too.
The question is now, which kind of tag (or combination
of tags) could be useful, to implement the viewer.
If do remeber of a tc:forEach tag, but i also noticed,
that this tag is deprecated.
As a consequence of this, if need somewhat like a for loop,
that enrolls my List<ofLines> in the same way as your
sheet you have done it. So coming back to the origin question,
can i combine JSTL with Tobago, and what would be a good
solution.
Would it be possible to enroll a list in a tc:box and use a
chosen over all of my possible views, containing tobago tags.
What would i need to do, in order to make this viewer
robust enough ?
Thank you
Groovie
Volker Weber-5 wrote:
>
> Hi Groovie,
>
> rendered works fine on tc:column.
>
> but you can't use the row variable for this, because the rendering of
> a column can't depend on the row.
> Or how would you expect e.g. exel to render a column in one row but
> not in the next?
>
> I thing what you want is to render different content, row dependent,
> in the same column? Than you should use the rendered not on the
> column but on the out.
>
> <tc:column label="...">
> <tc:panel>
> <tc:out rendered="#{currentLine.booleanBeanAttrib1}" value="..."/>
> <tc:out rendered="#{currentLine.booleanBeanAttrib2}" value="..."/>
> <tc:out rendered="#{currentLine.booleanBeanAttrib3}" value="..."/>
> </tc:panel>
> </tc:column>
>
> The panel surrounding the tc:out is not needed, but without you will
> get a warning about layout problems in the log file.
>
> Regards,
>
> Volker
>
>
>
>
> 2008/11/4 GroovieMan <[EMAIL PROTECTED]>:
>>
>> Hy Volker,
>>
>> the use of rendered will fail with tc:sheet variables, for (maybe
>> the same reason as the JSTL problem).
>> <tc:columns rendered= ...> runs perfectly with variables,
>> that have been defined as beans on inside faces-config.xml.
>> For any reason, the use of variable-declaration inside the tc:sheet
>> (here currentLine) fails barely.
>> The variable instance seems to exist, cause JSF can locate
>> somewhat by using the expression "currentLine.booleanBeanAttrib1",
>> but the result is strange. Iff you use the debugger and place a
>> breakpoint into the isBooleanBeanAttrib1 methode of your data-bean,
>> then you may find out, that the method is never been called.
>> Anyway the varibale #{currentLine.booleanBeanAttrib1} returns
>> a true, ughh where did it come from ??? that's weired!!!
>>
>> In order to circumscribe the bug, i defined a listviewer boolean
>> attribute
>> and received the expected result.
>>
>> As a consequence of this, i assume that there is a bug in tobago,
>> with the internal sheet-tag handling of the var(iable).
>>
>> Anyway any workaround is welcomed, cause this is a blocking-point
>> for my work.
>>
>> Thank you all
>> Groovie
>>
>> I opened a bug in Tobago for further discussing:
>>
>> https://issues.apache.org/jira/browse/TOBAGO-719
>>
>>
>>
>>
>> Volker Weber-5 wrote:
>>>
>>>
>>> you can't use jstl inside a tc:sheet, because it evaluates not at
>>> rendering time.
>>>
>>> you can use the rendered attribute of tc:column :
>>>
>>> <tc:sheet value="#{listviewer.showLines}" id="sheet"
>>> columns="1*;1*;1*;1*;1*;1*"
>>> var="currentLine"
>>> [... deleted...]
>>> selectable="single" >
>>>
>>> <tc:column rendered="#{currentLine.booleanBeanAttrib1}"
>>> label="#{overviewBundle.selsyslst_lst_nameId}"
>>>
>>>
>> --
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>> Sent from the MyFaces - Users mailing list archive at Nabble.com.
>>
>>
>
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