Reset all fields in form [duplicate]

Answer 1

RequestContext.getCurrentInstance().reset("form:panelform"); clears cached values - in case a validation during ValidationPhase did not work out correctly, the wrong values can be shown to the user on the following page.

I guess, what it not does is to clear values from the Model. Caused by this, during RenderResponse the Model values will be written back to the xhtml-output. To prevent that, just set the input fields to null manually in your action method.

The following link "How to clear all input fields in p:dataTable?"suggests setting the input type="reset". If it works, give me a hint. :-)

Answer 2

This is how you can clear out all child components = reset all their values. This works for submitted forms showing validation errors as well as for newly entered values in a form.

For JSF2 you have to use getFacetsAndChildren() to make your way to Facelets as well.

public static void clearComponent() {
        UIViewRoot root = FacesContext.getCurrentInstance().getViewRoot();

        // for JSF 2 getFacetsAndChildren instead of only JSF 1 getChildren
        Iterator<UIComponent> children = root.getFacetsAndChildren();
        clearAllComponentInChilds(children);
}

private static void clearAllComponentInChilds(Iterator<UIComponent> childrenIt) {

        while(childrenIt.hasNext()) {
            UIComponent component = childrenIt.next();
            log.debug("handling component " + component.getId() );
            if (component instanceof HtmlInputText) {
                HtmlInputText com = (HtmlInputText) component;
                com.resetValue();
            }
            if (component instanceof HtmlSelectOneMenu) {
                HtmlSelectOneMenu com = (HtmlSelectOneMenu) component;
                com.resetValue();
            }
            if (component instanceof HtmlSelectBooleanCheckbox) {
                HtmlSelectBooleanCheckbox com = (HtmlSelectBooleanCheckbox) component;
                com.resetValue();
            }
            if (component instanceof HtmlSelectManyCheckbox) {
                HtmlSelectManyCheckbox com = (HtmlSelectManyCheckbox) component;
                com.resetValue();
            }

            clearAllComponentInChilds(component.getFacetsAndChildren());    

        }

}