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h:selectOneRadio in dataTable  RSS feed

 
ranjith moram
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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
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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").

 
Vasundhara Sahi
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Hi Tim the precise explanation is very helpful.

Mucho Gracias.
 
ranjith moram
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Thanks Tim, it was very helpful.
 
It is sorta covered in the JavaRanch Style Guide.
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