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h:selectOneRadio in dataTable

ranjith moram
Greenhorn

Joined: Sep 15, 2012
Posts: 17
Hi,

I am retrieving values from database dynamically,I am iterating the same through dataTable, I need radio button beside each value and on selecting that radio button it should go to a page displaying values.

Please can any one give an idea, how I should do this.
Tim Holloway
Saloon Keeper

Joined: Jun 25, 2001
Posts: 16305
    
  21

Actually, using a radio button to trigger an action like that is bad GUI technique. Radio buttons are designed for select-one/deselect-another displays. A standard button would be more appropriate here. Aside from purely user considerations, however, a radio button cannot trigger an action at all, unlike a commandButton or commandLink. The only way to get it to do so is to attach an AJAX event to it.

If you take the results of your database query, construct a DataModel object (ListDataModel or ArrayDataModel, preferably), and use that DataModel to wrap the query results, then your action method can tell which row was clicked by invoking the model object's rowData or rowIndex methods.

To make the model work properly, you must define it in a backing bean whose scope is NOT request scope and you have to set the dataTable's value= attribute to reference a property that retrieves that DataModel object (it's read-only, so no need for a "set" method, only "get").


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Vasundhara Sahi
Greenhorn

Joined: Mar 21, 2012
Posts: 17

Hi Tim the precise explanation is very helpful.

Mucho Gracias.


Truth be told .....I am a Java noob....
ranjith moram
Greenhorn

Joined: Sep 15, 2012
Posts: 17
Thanks Tim, it was very helpful.
 
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subject: h:selectOneRadio in dataTable