Hi!

in my admin area I create a new field: DropdownField. This allow me to select one option.
Is there a field that allow me to select two or more options? I search something similar in Silverstripe documentations but I found nothing..
can you help me please?

thanks!!

http://doc.silverstripe.org/checkboxsetfield

ListboxFields also support multiple selections
http://api.silverstripe.org/trunk/forms/fields-basic/ListboxField.html

treemultiselectdropdown
http://doc.silverstripe.org/treemultiselectfield

Hi Willr!
I follow your solution but I have a problem when I save.. 'Error saving content'

So I write this to allow 3 options:

static $db = array(
'MultiypleType' => 'Varchar',
);

function getCMSFields() {
$fields = parent::getCMSFields();

$array = array(
'1' => 'aaa',
'2' => 'bbb',
'3'=> 'ccc'
);

$fields->addFieldToTab("Root.Content.Main", new ListboxField('MultiypleType','MultiypleType',$array,$value = '', $size = 4, $multiple=true),'Content');

return $fields;
}

what is wrong?

Check firebug (under console), or your console panel in your browser or your error logs to get the actual error message.

Hi!

my error is the following:

500 Warning: "Array to string conversion" at line 109 of D:\_projects\silverstripe\sapphire\core\model\fieldtypes\DBField.php 419ms

function() {return new ActiveXObject('Microsoft.XMLHTTP')},\n

Hi here's my example of linking items to it self:

class CatItem extends DataObject {
    ...
       public static $many_many = array(
		'LinkedItems' => 'CatItem',
	);
   ...
        public function getCMSFields() {
		...
                $fields->removeByName('LinkedItems');
		$fields->insertAfter(
			ListboxField::create(
				'LinkedItems',
				'Linked Items',
				CatItem::get()->map()->toArray()
			)->setMultiple(true),
			'Description'
		);
               ...
       }
  ...
}

It saves item list but I get a notice error to fix this you need to open framework/forms/fields/GridField.php, find a line 665 and replace it with
if($fieldData && isset($fieldData['GridState']) && $fieldData['GridState']) to check if $fieldData['GridState'] is set

public function handleRequest(SS_HTTPRequest $request, DataModel $model) {
...
  if($fieldData && isset($fieldData['GridState']) && $fieldData['GridState'])
...
}