GIF89a;
Mini Shell
Mini Shell
<?php
abstract class Model
{
// Constants
const CANCEL_SAVE_ID = -1;
// Fields
protected static $db;
protected static $services;
// Constructor
public function __construct($data = null, $rawData = false)
{
self::$services = ServiceContainer::getInstance();
self::$db = self::$services->get('db');
$this->initialize();
if($data)
{
$rawData ? $this->setRawData($data) : $this->setData($data);
}
}
public function initialize()
{
}
// Getters & setters
public function getTableName()
{
throw new Exception('Specify the table name');
}
public function getColumns()
{
return array();
}
public function setData($data)
{
foreach($data as $key => $value)
{
if(!empty($value))
{
$this->$key = $value;
}
}
}
public function getData()
{
$data = array();
foreach($this as $key => $value)
{
$data[$key] = $value;
}
return $data;
}
public function setRawData($data)
{
$this->setData($this->postRead($data));
}
public function toJson()
{
return json_encode($this->getData());
}
// Methods
public function find($id)
{
return $this->findOneBy(array('id' => $id));
}
public function findAll($orderBy = array(), $join = array())
{
$query = 'SELECT * FROM ' . $this->getTableName();
// Handle joining
if(!empty($join))
{
$joinTable = $join['table'];
$joinColumn = $join['column'];
$joinSelfColumn = $join['selfColumn'];
$query .= ' LEFT JOIN ' . $joinTable . ' ON (' .
$this->getTableName() . '.' . $joinSelfColumn .
' = ' .
$joinTable . '.' . $joinColumn .
')';
}
// Handle ordering
if(!empty($orderBy))
{
foreach($orderBy as $name => $type)
{
if(is_numeric($name))
{
$name = $type;
$type = 'ASC';
}
$query .= " ORDER BY $name $type,";
}
// Cut the last comma (,) off
$query = substr($query, 0, -1);
}
// Query
$result = self::$db->query($query);
if($result)
{
$objects = array();
// Construct the objects representing the result set
foreach($result as $value)
{
$objects[] = $this->createInstance($this->postRead($value));
}
// Return the result
return $objects;
}
// Indicate error
return false;
}
public function findBy($options, $logicalOperator = 'AND', $orderBy = array(), $join = array())
{
// Return everything if no options given
if(empty($options))
{
return $this->findAll($orderBy, $join);
}
$query = 'SELECT * FROM ' . $this->getTableName();
$params = array();
// Handle joining
if(!empty($join))
{
$joinTable = $join['table'];
$joinColumn = $join['column'];
$joinSelfColumn = $join['selfColumn'];
$query .= ' LEFT JOIN ' . $joinTable . ' ON (' .
$this->getTableName() . '.' . $joinSelfColumn .
' = ' .
$joinTable . '.' . $joinColumn .
')';
}
$query .= ' WHERE ';
// Build the query
$keys = array_keys($options);
$key = $keys[0];
$value = $options[$key];
$op = '=';
$v = $value;
if(is_array($value) && count($value))
{
$op = $value[0];
$v = $value[1];
}
$params[] = $v;
if(strtolower($op) === 'between')
{
$query .= "`$key` $op ? AND ?";
$params[] = $value[2];
}
else
{
$query .= "`$key` $op ?";
}
foreach(array_slice($options, 1) as $key => $value)
{
$op = '=';
$v = $value;
if(is_array($value) && count($value))
{
$op = $value[0];
$v = $value[1];
}
$query .= " $logicalOperator `$key` $op ?";
$params[] = $v;
}
// Handle ordering
if(!empty($orderBy))
{
foreach($orderBy as $name => $type)
{
if(is_numeric($name))
{
$name = $type;
$type = 'ASC';
}
$query .= " ORDER BY $name $type,";
}
// Cut the last comma (,) off
$query = substr($query, 0, -1);
}
// Execute the query
$result = self::$db->query($query, $params);
if($result)
{
$objects = array();
// Construct the objects representing the result set
foreach($result as $value)
{
$objects[] = $this->createInstance($this->postRead($value));
}
// Return the result
return $objects;
}
// Indicate error
return false;
}
public function findOneBy($options, $logicalOperator = 'AND', $join = array())
{
$query = 'SELECT * FROM ' . $this->getTableName();
$params = array();
// Handle joining
if(!empty($join))
{
$joinTable = $join['table'];
$joinColumn = $join['column'];
$joinSelfColumn = $join['selfColumn'];
$query .= ' LEFT JOIN ' . $joinTable . ' ON (' .
$this->getTableName() . '.' . $joinSelfColumn .
' = ' .
$joinTable . '.' . $joinColumn .
')';
}
$query .= ' WHERE ';
// Build the query
$keys = array_keys($options);
$key = $keys[0];
$value = $options[$key];
$op = '=';
$v = $value;
if(is_array($value) && count($value))
{
$op = $value[0];
$v = $value[1];
}
$params[] = $v;
if(strtolower($op) === 'between')
{
$query .= "`$key` $op ? AND ?";
$params[] = $value[2];
}
else
{
$query .= "`$key` $op ?";
}
foreach(array_slice($options, 1) as $key => $value)
{
$op = '=';
$v = $value;
if(is_array($value) && count($value))
{
$op = $value[0];
$v = $value[1];
}
$query .= " $logicalOperator `$key` $op ?";
$params[] = $v;
}
// Execute the query
$result = self::$db->queryOne($query, $params);
if($result)
{
// Construct the object representing the result and return it
return $this->createInstance($this->postRead($result));
}
// Indicate error
return false;
}
public function save()
{
$options = $this->preSave();
if(isset($this->id) && $this->id == self::CANCEL_SAVE_ID) return; // Entity storing was cancelled
$query = '';
$params = null;
// Check whether it's a create or update operation
if(isset($this->id)) // Update
{
$query = 'UPDATE ' . $this->getTableName() . ' SET ';
$params = array();
$keys = array_keys($options);
$key = $keys[0];
$value = $options[$key];
$query .= "`$key` = ?";
$params[] = $value;
foreach(array_slice($options, 1) as $key => $value)
{
$query .= ", `$key` = ?";
$params[] = $value;
}
$query .= ' WHERE id = ?';
$params[] = $this->id;
}
else // Create entry
{
$query = 'INSERT INTO ' . $this->getTableName() . '(';
$params = array();
$keys = array_keys($options);
$key = $keys[0];
$value = $options[$key];
$query .= "`$key`";
$params[] = $value;
foreach(array_slice($options, 1) as $key => $value)
{
$query .= ", `$key`";
$params[] = $value;
}
$query .= ') VALUES(?' . str_repeat(', ?', count($options) - 1) . ')';
}
// Execute the query
$result = self::$db->execute($query, $params);
if($result && !isset($this->id))
{
$this->id = self::$db->lastInsertId();
}
return $result;
}
public function remove()
{
if(!isset($this->id))
{
return false;
}
return self::$db->execute('DELETE FROM ' . $this->getTableName() . ' WHERE id = ?', array($this->id));
}
public function validate()
{
throw new Exception('Implement model\'s validation');
// Return errors
return null;
}
public function preSave()
{
// Return the data in its raw database form
$result = array();
foreach($this->getColumns() as $column)
{
if(isset($this->$column))
{
$result[$column] = $this->$column;
}
}
return $result;
}
public function postRead($data)
{
// Transform the data from database raw form to objects
return $data;
}
// Helpers
protected function createInstance($data = null)
{
$className = get_class($this);
return new $className($data);
}
}
?>
./BlackJoker Mini Shell 1.0