silverstripe-userforms/code/model/editableformfields/EditableOption.php
2016-09-23 17:27:15 +01:00

174 lines
3.8 KiB
PHP

<?php
/**
* Base Class for EditableOption Fields such as the ones used in
* dropdown fields and in radio check box groups
*
* @method EditableMultipleOptionField Parent()
* @package userforms
*/
class EditableOption extends DataObject
{
private static $default_sort = "Sort";
private static $db = array(
"Name" => "Varchar(255)",
"Title" => "Varchar(255)",
"Default" => "Boolean",
"Sort" => "Int",
"Value" => "Varchar(255)",
);
private static $has_one = array(
"Parent" => "EditableMultipleOptionField",
);
private static $extensions = array(
"Versioned('Stage', 'Live')"
);
private static $summary_fields = array(
'Title',
'Default'
);
protected static $allow_empty_values = false;
/**
* Returns whether to allow empty values or not.
*
* @return boolean
*/
public static function allow_empty_values()
{
return (bool) self::$allow_empty_values;
}
/**
* Set whether to allow empty values.
*
* @param boolean $allow
*/
public static function set_allow_empty_values($allow)
{
self::$allow_empty_values = (bool) $allow;
}
/**
* @param Member $member
*
* @return boolean
*/
public function canEdit($member = null)
{
return $this->Parent()->canEdit($member);
}
/**
* @param Member $member
*
* @return boolean
*/
public function canDelete($member = null)
{
return $this->canEdit($member);
}
public function getEscapedTitle()
{
return Convert::raw2att($this->Title);
}
/**
* @param Member $member
* @return bool
*/
public function canView($member = null)
{
return $this->Parent()->canView($member);
}
/**
* Return whether a user can create an object of this type
*
* @param Member $member
* @param array $context Virtual parameter to allow context to be passed in to check
* @return bool
*/
public function canCreate($member = null)
{
// Check parent page
$parent = $this->getCanCreateContext(func_get_args());
if($parent) {
return $parent->canEdit($member);
}
// Fall back to secure admin permissions
return parent::canCreate($member);
}
/**
* Helper method to check the parent for this object
*
* @param array $args List of arguments passed to canCreate
* @return DataObject Some parent dataobject to inherit permissions from
*/
protected function getCanCreateContext($args)
{
// Inspect second parameter to canCreate for a 'Parent' context
if(isset($args[1]['Parent'])) {
return $args[1]['Parent'];
}
// Hack in currently edited page if context is missing
if(Controller::has_curr() && Controller::curr() instanceof CMSMain) {
return Controller::curr()->currentPage();
}
// No page being edited
return null;
}
/**
* @param Member $member
* @return bool
*/
public function canPublish($member = null)
{
return $this->canEdit($member);
}
/**
* @param Member $member
* @return bool
*/
public function canUnpublish($member = null)
{
return $this->canDelete($member);
}
/**
* Fetches a value for $this->Value. If empty values are not allowed,
* then this will return the title in the case of an empty value.
*
* @return string
*/
public function getValue()
{
$value = $this->getField('Value');
if (empty($value) && !self::allow_empty_values()) {
return $this->Title;
}
return $value;
}
protected function onBeforeWrite()
{
if (!$this->Sort) {
$this->Sort = EditableOption::get()->max('Sort') + 1;
}
parent::onBeforeWrite();
}
}