silverstripe-userforms/code/editor/EditableMultipleOptionField.php

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<?php
/**
* Base class for multiple option fields such as dropdowns and
* radio sets. Implemented as a class but you would not create
* one of these directly, rather you would instantiate a subclass
* such as EditableDropdownField
*
* @todo Maybe it would make more sense to have dropdownfield and
* checkboxset just transformations on this class
*
* @package userforms
*/
class EditableMultipleOptionField extends EditableFormField {
static $db = array();
static $has_one = array();
static $has_many = array(
"Options" => "EditableOption"
);
/**
* Deletes all the options attached to this field before
* deleting the field. Keeps stray options from floating
* around
*
* @return void
*/
public function delete() {
$options = $this->Options();
if($options) {
foreach($options as $option) {
$option->delete();
}
}
parent::delete();
}
/**
* Duplicate a pages content. We need to make sure all
* the fields attached to that page go with it
*
* @return DataObject a Clone of this node
*/
public function duplicate() {
$clonedNode = parent::duplicate();
if($this->Options()) {
foreach($this->Options() as $field) {
$newField = $field->duplicate();
$newField->ParentID = $clonedNode->ID;
$newField->write();
}
}
return $clonedNode;
}
/**
* On before saving this object we need to go through and keep
* an eye on all our option fields that are related to this
* field in the form
*
* @param Array Data
*/
public function populateFromPostData($data) {
parent::populateFromPostData($data);
// get the current options
$fieldSet = $this->Options();
// go over all the current options and check if ID and Title still exists
foreach($fieldSet as $option) {
if(isset($data[$option->ID]) && isset($data[$option->ID]['Title']) && $data[$option->ID]['Title'] != "field-node-deleted") {
$option->populateFromPostData($data[$option->ID]);
}
else {
$option->delete();
}
}
}
/**
* Return whether or not this field has addable options
* such as a dropdown field or radio set
*
* @return bool
*/
public function getHasAddableOptions() {
return true;
}
/**
* Return the form field for this object in the front
* end form view
*
* @return FormField
*/
public function getFormField() {
return user_error('Please implement getFormField() on '. $this->class, E_USER_ERROR);
}
}
?>