113 lines
2.3 KiB
PHP
113 lines
2.3 KiB
PHP
<?php
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/**
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* Single field in the database.
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* Every field from the database is represented as a sub-class of DBField. In addition to supporting
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* the creation of the field in the database,
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*/
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abstract class DBField extends ViewableData {
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protected $value;
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protected $tableName;
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protected $name;
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/**
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* @var $default mixed Default-value in the database.
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* Might be overridden on DataObject-level, but still useful for setting defaults on
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* already existing records after a db-build.
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*/
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protected $defaultVal;
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function __construct($name) {
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$this->name = $name;
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parent::__construct();
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}
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/**
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* Create a DBField object that's not bound to any particular field.
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* Useful for accessing the classes behaviour for other parts of your code.
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*/
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static function create($className, $value, $name = null) {
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$dbField = Object::create($className, $name);
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$dbField->setValue($value);
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return $dbField;
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}
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function setVal($value) {
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return $this->setValue($value);
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}
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function setValue($value) {
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$this->value = $value;
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}
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function setTable($tableName) {
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$this->tableName = $tableName;
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}
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function forTemplate() {
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return $this->value;
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}
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function HTMLATT() {
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return Convert::raw2htmlatt($this->value);
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}
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function ATT() {
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return Convert::raw2att($this->value);
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}
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function RAW() {
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return $this->value;
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}
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function JS() {
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return Convert::raw2js($this->value);
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}
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function HTML(){
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return Convert::raw2xml($this->value);
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}
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function XML(){
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return Convert::raw2xml($this->value);
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}
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/**
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* Returns the value to be set in the database to blank this field.
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* Usually it's a choice between null, 0, and ''
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*/
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function nullValue() {
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return "null";
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}
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/**
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* Saves this field to the given data object.
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*/
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function saveInto($dataObject) {
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$fieldName = $this->name;
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if($fieldName) {
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$dataObject->$fieldName = $this->value;
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} else {
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user_error("DBField::saveInto() Called on a nameless '" . get_class($this) . "' object", E_USER_ERROR);
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}
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}
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/**
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* Add the field to the underlying database.
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*/
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abstract function requireField();
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function debug() {
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return <<<DBG
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<ul>
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<li><b>Name:</b>{$this->name}</li>
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<li><b>Table:</b>{$this->tableName}</li>
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<li><b>Value:</b>{$this->value}</li>
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</ul>
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DBG;
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}
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}
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?>
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