OptionsetField

This field allows you to ensure that a form element is submitted is not optional and is part of a fixed set of data. This field uses the input type of radio. It's a direct subclass of DropdownField, so the constructor and arguments are in the same format.

If you want to implement a OptionsetField into a form element, you need to pass it an array of source data.

new OptionsetField(
   $name = "Foobar",
   $title = "FooBar's optionset",
   $source = array(
      "1" => "Option 1",
      "2" => "Option 2",
      "3" => "Option 3",
      "4" => "Option 4",
      "5" => "Option 5"
   ),
   $value = "1"
);

You can use the helper functions on data object set to create the source array. eg:

//Database request for the object
$myDoSet = DataObject::get("FooBars","");
if($myDoSet){
 // This returns an array of ID => Title
 $map = $myDoSet->toDropDownMap();
 
  // Instantiate the OptionsetField 
  $fieldset = new Fieldset(
    new OptionsetField(
     $name = "Foobar",
     $title = "FooBar's optionset",
     $source = $map,
     $value = $map[0]
    )
  );
}
 
// Pass the fields to the form constructor. etc

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