Clear JSF form input values after submitting

Question

If there\'s a form, and has a textbox and a button, how do you erase the content of the textbox after you submit the form?

Answer 1

You can blank out the property of the managed bean that should not be repainted when you render the response. This can be done done using code similar to the snippet posted below:

private String name;

public String getName(){return name;}
public void setName(String name){this.name=name};

public String submit()
{
    //do some processing
    ...
    // blank out the value of the name property
    name = null;
    // send the user back to the same page.
    return null;
}

The reason for the current behavior can be found in how the JSF runtime processes requests. All JSF requests to a view are processed in accordance with the JSF standard request-response lifecyle. In accordance with the lifecyle, the managed bean contents are updated with the value from request (i.e. the value of DataForm.Name is set) before the application event (DataForm.submit) is executed. When the page is rendered in the Render Response phase, the current value of the bean is used to render the view back to the user. Unless the value is changed in an application event, the value will always be one that is applied from the request.