//Conditional required rule example
$r = new FormRule(FormRuleType::required, $o_fe_dogname, NULL, 'As you have a dog, please tell us its name.');
$r->setCondition(array($o_fe_havedog, 'Yes'));
$a_formRules[] = $r;
//You can create a Show rule which will keep the field hidden, unless the value of another field is selected.
$r = new FormRule(FormRuleType::conditionShow, $o_fe_dogname);
$r->setCondition(array($o_fe_havedog, 'Yes'));
$a_formRules[] = $r;
$o_fe_havecat = new JsonFormBuilder_elementRadioGroup('havecat', 'Do you have a cat?', array('Yes' => 'Yes', 'No' => 'No'));
$o_fe_catname = new JsonFormBuilder_elementText('catname', 'Name of Cat');
//Same setup for a radio group
$r = new FormRule(FormRuleType::required, $o_fe_catname, NULL, 'As you have a cat, please tell us its name.');
$r->setCondition(array($o_fe_havecat, 'Yes'));
$a_formRules[] = $r;
$r = new FormRule(FormRuleType::conditionShow, $o_fe_catname);
$r->setCondition(array($o_fe_havecat, 'Yes'));
$a_formRules[] = $r;
$o_fe_buttSubmit = new JsonFormBuilder_elementButton('submit', 'Submit Form', 'submit');
//Set required fields
$a_formFields_required = array($o_fe_havedog, $o_fe_havecat, $o_fe_name, $o_fe_email);
foreach ($a_formFields_required as $field) {
$a_formRules[] = new FormRule(FormRuleType::required, $field);
}
//Make email field require a valid email address
$a_formRules[] = new FormRule(FormRuleType::email, $o_fe_email, NULL, 'Please provide a valid email address');
//CREATE FORM AND SETUP
$o_form = new JsonFormBuilder($modx, 'contactForm');
$o_form->setRedirectDocument(3);
$o_form->addRules($a_formRules);
$o_form->setEmailToAddress($modx->getOption('emailsender'));
$o_form->setEmailFromAddress($o_form->postVal('email_address'));
