removeByName('ApiVersionID'); $versions = OpenStackApiVersion::get()->map('ID', 'Version'); $ddl = new DropdownField('ApiVersionID', 'API Version', $versions); $ddl->setEmptyString('--Select An API Version --'); $fields->insertAfter($ddl,'OpenStackComponentID'); $versions = array(); foreach(OpenStackComponent::get()->filter('SupportsVersioning',true) as $component){ foreach($component->getVersions() as $version){ if(!array_key_exists(intval($component->getIdentifier()),$versions)){ $versions[intval($component->getIdentifier())] = array(); } array_push($versions[intval($component->getIdentifier())],array('value' => intval($version->getIdentifier()), 'text' => $version->getVersion())); } } $json_data = json_encode($versions); $script = << var versions = {$json_data}; (function($) { var ddl_component = $('#Form_ItemEditForm_OpenStackComponentID'); var ddl_versions = $('#Form_ItemEditForm_ApiVersionID'); ddl_component.change(function(event){ var component_id = $(this).val(); var component_versions = versions[component_id]; ddl_versions.empty(); //remove all child nodes ddl_versions.html(''); ddl_versions.append("-- Please Select --"); $.each(component_versions, function (i, item) { ddl_versions.append($('', {value: item.value,text : item.text})); }); ddl_versions.trigger('liszt:updated'); }); var current_component = ddl_component.val(); if(current_component!=''){ var current_version = ddl_versions.val(); var component_versions = versions[current_component]; ddl_versions.empty(); //remove all child nodes ddl_versions.html(''); ddl_versions.append("-- Please Select --"); $.each(component_versions, function (i, item) { ddl_versions.append($('', {value: item.value,text : item.text})); }); ddl_versions.val(current_version); ddl_versions.trigger('liszt:updated'); } })(jQuery); JS; $fields->add(new LiteralField('js_data', $script)); $fields->removeByName('OpenStackComponentID'); //kludge; get parent id from url.... $url = preg_split('/\//', $_REQUEST['url']); $release_id = (int)$url[8]; $ddl = new DropdownField('OpenStackComponentID', 'OpenStack Component', OpenStackComponent::get()->filter('SupportsVersioning',true)->innerJoin('OpenStackRelease_OpenStackComponents',"OpenStackRelease_OpenStackComponents.OpenStackComponentID = OpenStackComponent.ID AND OpenStackReleaseID = {$release_id} ")->map('ID','Name')); $ddl->setEmptyString('--Select A OS Component--'); $fields->insertBefore($ddl,'ApiVersionID'); return $fields; } public function onBeforeWrite(){ //create group here? parent::onBeforeWrite(); } function getCMSValidator() { return $this->getValidator(); } function getValidator() { $validator= new RequiredFields(array('OpenStackComponentID','ApiVersionID')); return $validator; } }