Use commandLink to update parent table that is child to another table

Question

I have this structure:

<h:dataTable id="baselist">
   <h:dataTable id=childlist">
       <p:commandLink update="should only update childlist">
   </h:dataTable>
</h:dataTable>

I've tried everything I can think of, but I only get errors saying that the childlist can not be found. Is it not possible to update this way?

You can try `update="@parent"` – kolossus Oct 24 '13 at 04:17 — kolossus, Oct 24 '13 at 04:17

score 0 · Answer 1 · answered Oct 24 '13 at 00:16

Note that the there is an index number included in the id of the childlist datatable.

eg.:

the id of the childlist table in the first row of the parent table is: :form:baselist:0:childlist

the id of the childlist table in the second row of the parent table is: :form:baselist:1:childlist

the id of the childlist table in the third row of the parent table is: :form:baselist:2:childlist

and so on...

Solution:

Update the parent table so everything gets updated and synchronized including childlist tables in all the rows

eg.

update=":form:baselist"

Unrealated:

You can see the full qualified id of your elements by right clicking your rendered page in the browser and view page source.

Yes, I've tried that and it works; my question though, is why I'm not able to only update the child table. I've tried: `@parent` which does not update anything it would seem; and also the full qualified path which gives the exception about the id not possible to find, even though I can see it's correct. — nivis, Oct 24 '13 at 09:09

score 0 · Answer 2 · edited May 23 '17 at 12:05

You may can try using #{component.parent.clientId} but you wouldn't be gaining as much as you think.

JSF will typically rebuild the whole structure see answer in: Does Facelets rebuild the whole page if Ajax is trigger from a form and updates another?

In addition, if you have modified baselist, then you will get into problems as the :0,:1 namingcontainer ids will become inconsistent. e.g. if you remove the first element from baselist, JSF will rebuid the view with new ids. so :form:baselist:1:childlist' will become :form:baselist:0:childlist etc.

I am not sure if you 'll get an error but for sure this will cause some pain sooner or later.

Use commandLink to update parent table that is child to another table

2 Answers2