Hi, I created a small validator and would like to share it with you all. If there is already something like that, I will appreciate if someone direct me to it. This is a From Validator. If you have several checkboxes in a form and you want that *at least* one checkbox to be selected, you can use this validator.
Here is the code: public class CheckboxesSelectValidator extends AbstractFormValidator { private static final long serialVersionUID = -5475763159946590330L; /** form components to be checked. */ private final CheckBox[] components; private final String optionsMessage; public CheckboxesSelectValidator(CheckBox[] components, String optionsMessage) { this.components = components; this.optionsMessage = optionsMessage; } public FormComponent[] getDependentFormComponents() { return components; } /** * At least one check box should be checked */ public void validate(Form form) { for (CheckBox component : components) { if (((Boolean) component.getConvertedInput()).booleanValue()) { return; } } error(components[0]); } @SuppressWarnings("unchecked") @Override protected Map variablesMap() { Map args = new HashMap(1); args.put("options", optionsMessage); return args; } } Here is a sample usage: masterConfCheckbox.getForm().add( new CheckboxesSelectValidator(new CheckBox[] { masterConfCheckbox, modelconfCheckbox }, getString("Reports.Parameters.validator.configuration"))); And this is the error message (taken from the properties file): CheckboxesSelectValidator = Please select at least one option from ${options}. Any remarks will be appreciated as well. Eyal Golan egola...@gmail.com Visit: http://jvdrums.sourceforge.net/ LinkedIn: http://www.linkedin.com/in/egolan74 P Save a tree. Please don't print this e-mail unless it's really necessary