using h:selectManyCheckbox inside h:dataTable

[Marcos Maia]

Hi,

I�m having problems trying to render a selectManyCheckbox from inside dataTable.
After a db query I have a Collection of objects wich I render using dataTable, as follows:

  
<h :D ataTable var="linhaSistema" value="#{sistemaBean.todosSistemas}" styleClass="sub_tabela_contorno" headerClass="list_cab">
                                      <h:column>
                                        <f:facet name="header">
                                          <h :o utputText value="Nome"/>
                                        </f:facet>
                                        <h :o utputText value="#{linhaSistema.nome}"/>
                                      </h:column>
                                      <h:column>
                                        <f:facet name="header">
                                          <h :o utputText value="Sigla"/>
                                        </f:facet>
                                        <h :o utputText value="#{linhaSistema.sigla}"/>
                                      </h:column>
                                    </h :D ataTable>

this works as expected... but now I need to put some checkBoxes, one for each entry, so the user can choose some of them to delete or one for update for example.
With this requirenment in mind I�ve been trying to render a selectManyCheckbos given to each one the pk value from the list... it�s not working...

follows the code I�m trying to use:

  
<h :D ataTable var="linhaSistema" value="#{sistemaBean.todosSistemas}" styleClass="sub_tabela_contorno" headerClass="list_cab">
                                      <h:column>
                                        <h:selectManyCheckbox id="pk">
                                          <f:facet name="header">
                                            <h :o utputText value="Selecione"/>
                                          </f:facet>
                                          <f:selectItem itemValue="#{linhaSistema.id}"/>
                                        </h:selectManyCheckbox>
                                      </h:column>
                                      <h:column>
                                        <f:facet name="header">
                                          <h :o utputText value="Nome"/>
                                        </f:facet>
                                        <h :o utputText value="#{linhaSistema.nome}"/>
                                      </h:column>
                                      <h:column>
                                        <f:facet name="header">
                                          <h :o utputText value="Sigla"/>
                                        </f:facet>
                                        <h :o utputText value="#{linhaSistema.sigla}"/>
                                      </h:column>
                                    </h :D ataTable>

any help will be appreciated.... tx in advance...
[ June 08, 2005: Message edited by: Marcos Maia ]

[Henrique Sousa]

Hi Marcos,

I was trying to do that same thing a few weeks ago. With the help of some old topics, ranchers and Google, I found out that selectManyCheckbox is not such a good choice. From what I see, you want to select some 'linhaSistema' objects, right? The approach that worked for me was to add a selected (boolean) property to 'linhaSistema' and use selectBooleanCheckbox. Then you iterate over the collection again to check which objects were selected when the page is submited. Regards,

[ram gaurav]

Hi

Its right to say that we can use <h:selectBooleanCheckbox />
But i am having the problem that how to generate dynamic ids for every checkbox, bacause it should be there so that we can easily differentiate that which checkbox is selected.

Thanks
Gaurav

[Bauke Scholtz]

About checkboxes in datatables, here is a useful reference: Using datatables � Select multiple rows.

[Joe Jose]

Bauke's solution worked for me. I used h:selectManyCheckbox.