displayIf("VenueSize")->isGreaterThan(100)->end(), CheckboxSetField::create( "Vendors", "Vendors", [ 'test1' => 'Test one', 'test2' => 'Test two', 'test3' => 'Test three' ] ) ->displayIf("Refreshments")->isChecked()->end(), TextField::create("TentSize","You're going to need a tent. What size is it?") ->displayIf("Vendors")->hasCheckedAtLeast(3)->end(), CheckboxField::create('HasUpload', 'Has an upload'), Wrapper::create( UploadField::create('FileUpload', 'Upload a file'), LiteralField::create('test', 'Keep the file small!') )->displayIf('HasUpload')->isChecked()->end(), OptionSetField::create("LinkType", "", array('internal' => 'Link to an internal page', 'external' => 'Link to an external page')), DropdownField::create("InternalLinkID", "Choose a page", SiteTree::get()->map()->toArray())->setEmptyString("-- choose --") ->displayIf("LinkType")->isEqualTo("internal") ->end(), TextField::create("ExternalLink", "Link to external page") ->displayIf("LinkType")->isEqualTo("external") ->end(), Wrapper::create( ReadonlyField::create('URL','Base URL','http://example.com') )->displayIf('LinkType')->isEqualTo('external')->end(), TextField::create("LinkLabel", "Label for link") ->displayIf("LinkType")->isChecked()->end(), CheckboxField::create("UseEmbedCode","I have embed code") ->displayIf("LinkType")->isEqualTo("external") ->end(), TextareaField::create("EmbedCode","Enter the embed code.") ->displayIf("UseEmbedCode")->isChecked() ->orIf() ->group() ->orIf("ExternalLink")->contains("youtube.com") ->orIf("ExternalLink")->contains("vimeo.com") ->end() ); } }