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List:       tapestry-user
Subject:    Help needed with DirectLink and page parameters (Was: Contrib:Table and page parameters)
From:       Kaspar Fischer <fischerk () inf ! ethz ! ch>
Date:       2007-12-19 15:10:13
Message-ID: 9C5F0BB2-681B-4F0D-A121-B9D74EE31BC4 () inf ! ethz ! ch
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Dear list,

In order to isolate the problem, I tried to do something much  
simpler: showing
a DirectLink on one of my pages.

The tapestry manual gives an example on how to use DirectLink with  
listeners:

   http://tapestry.apache.org/tapestry4/QuickStart/directlink.html
   http://tapestry.apache.org/tapestry4/UsersGuide/listenermethods.html

However, these examples assume that the content of the page  
containing the
DirectLink does not depend on page parameters.

How can I use a DirectLink on a page that depends on a parameter, for
instance of, on a page like this

   http://my.org/app?page=Article&id=27

The link generated by a DirectLink component is something like

   http://...Article,$MyComponent.$DirectLink.sdirect

but does not mention the id. So the listener is executed but afterwards,
the Article page does not know which item (namely id=27) it should show!

I feel very much that I am on the wrong track and would be very glad to
receive some help.

Many thanks,
Kaspar

On 17.12.2007, at 20:50, Kaspar Fischer wrote:
> Hm, I think my question was not well formulated. Apologies. I'll try
> once more!
>
> Suppose you want to implement an index that shows all files  
> starting with
> "A", "B", etc. My page would show
>
>   A B C D ... X Y Z
>
> and you can click on a letter to show the files starting with this  
> letter
> in a sortable Contrib:Table. How would I do this?
>
> Can somebody lead me on the right track?
>
> Thanks!
> Kaspar
>
> On 16.12.2007, at 17:08, Kaspar Fischer wrote:
>
>> Hi list,
>>
>> How can I tell Contrib:Table to pass on page paremeters? When I  
>> click on
>> a table column to sort it, the page that opens does not have the page
>> parameters of the old page anymore!
>>
>> More precisely, my page "Page.html" uses a paremeter (nodeid) to know
>> what content to display. So in Page.java's pageBeginRender() method I
>> have
>>
>>     String nodeIdParam = cycle.getParameter("nodeid");
>>
>> and then I load the data from a database and display a few things in
>> a Contrib:Table.
>>
>> Unfortunately, the link that the Contrib:Table generates in order to
>> sort a column does not contain the value for parameter "nodeid":
>>
>>   http://localhost:8080/kc/ 
>> Page,tableColumnComponent.linkColumn.sdirect?container=Contrib% 
>> 3ASimpleTableColumnPage&sp=APage%2C% 
>> 24SortableTable.table.tableView&sp=SnodeTableTitle
>>
>> So when I click the link, my node does not know what data to load  
>> from
>> the database!
>>
>> I think I need to tell Contrib:Table to include the nodeid in the  
>> link,
>> right?
>>
>> How can I do this?
>>
>> Many thanks,
>> Kaspar

>

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