Using selectManyCheckbox

[Viswanath Sriram]

I have used datatable tag to display the rows.For every row a check box will appear with its id.Now i want the list of the selected items in the controller.can any body explain this with code.

[Sushma Sharma]

I think you can use your backing beans's property which should be array. but I am not sure how to do that.

the other way round is to iterate through the request parameters and get the value.

e.g.

  
 
HashMap hmap = new HashMap(FacesContext.getCurrentInstance().getExternalContext().getRequestParameterValuesMap());
 
int cnt = 0;
///Now iterate thru the hashmap. and increment cnt
 
if (hmap.get("pr:prForm:prTable:" + cnt + ":chk") != null) {
 String value = ((String[])hmap.get("pr:prForm:prTable:" + cnt + ":chk"))[0]
}
 

where
pr:prForm:prTable - pr is subview id, prForm is Form id and prTable is dataTable id.

chk - is id of check box

cnt - is a counter to keep track of the check box number.

I hope that helps.

[Richard Green]

use a dataTable to display your checkbox and other controls.

ie.,

<h:dataTable id="something" value="#{backingBean.someList}" var="s" rowClasses="oddRow,evenRow">
<h:column>
  <h:selectBooleanCheckbox id="newClient" title="#{bundle.newClient}"
value="#{s.newClient}" 
/>
<h:outputText value="#{bundle.newClient}" />
</h:column>
   <h:column>
      // other controls
   </h:column>
   <h:column>
      // other controls
   </h:column>
   <h:column>
      // other controls
   </h:column>
</h:dataTable>
<h:commandButton styleClass="btn"
actionListener="#{yourBackingBean.someMethod}"
value="Submit"/>

thats all you need. you can be assured that when the action method in your backing bean is called, the "someList" will be populated correctly with what the user has selected.