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2017-04-15 01:34:36 +03:00
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model/Model.php Executable file
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<?php
/**
* Дефолтная модель
*
* @author Zmi
* @updated GYL
*/
abstract class Model
{
protected $table;
protected $db;
private $idField;
private $id;
private $data = array();
private $dataStart = array();
private $readOnly = false;
private $isDel = false;
abstract protected function CreateTable();
public function __construct($db, $table, $idField, $id = NULL, $readOnly = false)
{
$this->db = $db;
$this->table = $table;
$this->idField = $idField;
$this->id = $id;
$this->readOnly = $readOnly;
if (!$readOnly)
{
$this->CreateTable();
}
if ($this->id)
{
$this->data = $this->db->selectRow("SELECT
*
FROM
?#
WHERE
?# = ?d",
$this->table,
$this->idField,
$this->id
);
$this->dataStart = $this->data;
}
}
public function __set($key, $value)
{
if ($this->isDel)
{
trigger_error("Can not change removed object!", E_USER_ERROR);
}
if ($this->readOnly)
{
trigger_error("Can not change readonly object!", E_USER_ERROR);
}
if ($key == $this->idField)
{
trigger_error("Can not change id field!", E_USER_ERROR);
}
return $this->data[$key] = $value;
}
public function __get($key)
{
// Нельзя получать данные из объекта который удалён
if ($this->isDel)
{
trigger_error("Can not get value from removed object!", E_USER_ERROR);
}
// Если спрашивают ключевое поле, но сейчас идёт только заполнение данных то пытаетмся сделать запись в БД и вернуть id который она скажет
if (in_array($key, array($this->idField, 'id')) && !$this->id && count($this->data))
{
return $this->Flush();
}
return $this->data[$key];
}
public function Flush()
{
$ret = false;
if ($this->readOnly)
{
return $this->id ? $this->id : false;
}
if ($this->isDel)
{
return $ret;
}
if (count($this->data))
{
if ($this->id)
{
if ($this->dataStart != $this->data)
{
$data = array();
foreach ($this->data as $k => $v)
{
if ($k == $this->idField) continue;
$data[$k] = $v;
}
$ret = $this->db->query("UPDATE
?#
SET
?a
WHERE
?# = ?d",
$this->table,
$data,
$this->idField,
$this->id
);
$this->dataStart = $this->data;
}
$ret = $this->id;
}
else
{
$ret = $this->db->query("INSERT INTO
?#(?#)
VALUES
(?a)",
$this->table,
array_keys($this->data),
array_values($this->data)
);
$this->id = $this->data[$this->idField] = $ret;
}
}
return $ret;
}
public function IsExists()
{
return $this->db->selectCell("SELECT COUNT(*) FROM ?# WHERE ?# = ?d", $this->table, $this->idField, $this->id) > 0;
}
public function HasChanges()
{
return $this->data != $this->dataStart;
}
public function IsOnlyShow()
{
return $this->readOnly;
}
public function IsDeleted()
{
return $this->isDel;
}
public function Delete()
{
$ret = false;
if ($this->readOnly || $this->isDel)
{
return $ret;
}
if ($this->id)
{
$ret = $this->db->query("DELETE FROM ?# WHERE ?# = ?d",
$this->table,
$this->idField,
$this->id);
}
$this->isDel = $ret;
return $ret;
}
public function __destruct()
{
return $this->Flush();
}
};
?>