sterzycom/kirby/toolkit/lib/db.php

251 lines
No EOL
7.6 KiB
PHP

<?php
/**
* DB
*
* Database shortcuts
*
* @package Kirby Toolkit
* @author Bastian Allgeier <bastian@getkirby.com>
* @link http://getkirby.com
* @copyright Bastian Allgeier
* @license http://www.opensource.org/licenses/mit-license.php MIT License
*/
class DB {
const ERROR_UNKNOWN_METHOD = 0;
// query shortcuts
public static $queries = array();
// The singleton Database object
public static $connection = null;
/**
* (Re)connect the database
*
* @param mixed $params Pass array() to use the default params from the config
* @return object
*/
public static function connect($params = null) {
if(is_null($params) && !is_null(static::$connection)) return static::$connection;
if(is_null($params)) {
// try to connect with the default connection settings
$params = array(
'type' => c::get('db.type', 'mysql'),
'host' => c::get('db.host', 'localhost'),
'user' => c::get('db.user', 'root'),
'password' => c::get('db.password', ''),
'database' => c::get('db.name', ''),
'prefix' => c::get('db.prefix', ''),
);
}
return static::$connection = new Database($params);
}
/**
* Returns the current database connection
*
* @return object
*/
public static function connection() {
return static::$connection;
}
/**
* Sets the current table, which should be queried
*
* @param string $table
* @return object Returns a DBQuery object, which can be used to build a full query for that table
*/
public static function table($table) {
$connection = db::connect();
return $connection->table($table);
}
/**
* Executes a raw sql query which expects a set of results
*
* @param string $query
* @param array $bindings
* @param array $params
* @return mixed
*/
public static function query($query, $bindings = array(), $params = array()) {
$connection = db::connect();
return $connection->query($query, $bindings, $params);
}
/**
* Executes a raw sql query which expects no set of results (i.e. update, insert, delete)
*
* @param string $query
* @param array $bindings
* @return mixed
*/
public static function execute($query, $bindings = array()) {
$connection = db::connect();
return $connection->execute($query, $bindings);
}
/**
* Magic calls for other static db methods,
* which are redircted to the database class if available
*
* @param string $method
* @param mixed $arguments
* @return mixed
*/
public static function __callStatic($method, $arguments) {
if(isset(static::$queries[$method])) {
return call(static::$queries[$method], $arguments);
} else if(!is_callable(array(static::$connection, $method))) {
throw new Error('invalid static db method: ' . $method, static::ERROR_UNKNOWN_METHOD);
} else {
return call(array(static::$connection, $method), $arguments);
}
}
}
/**
* Shortcut for select clauses
*
* @param string $table The name of the table, which should be queried
* @param mixed $columns Either a string with columns or an array of column names
* @param mixed $where The where clause. Can be a string or an array
* @param mixed $order
* @param int $offset
* @param int $limit
* @return mixed
*/
db::$queries['select'] = function($table, $columns = '*', $where = null, $order = null, $offset = 0, $limit = null) {
return db::table($table)->select($columns)->where($where)->order($order)->offset($offset)->limit($limit)->all();
};
/**
* Shortcut for selecting a single row in a table
*
* @param string $table The name of the table, which should be queried
* @param mixed $columns Either a string with columns or an array of column names
* @param mixed $where The where clause. Can be a string or an array
* @param mixed $order
* @param int $offset
* @param int $limit
* @return mixed
*/
db::$queries['first'] = db::$queries['row'] = db::$queries['one'] = function($table, $columns = '*', $where = null, $order = null) {
return db::table($table)->select($columns)->where($where)->order($order)->first();
};
/**
* Returns only values from a single column
*
* @param string $table The name of the table, which should be queried
* @param mixed $column The name of the column to select from
* @param mixed $where The where clause. Can be a string or an array
* @param mixed $order
* @param int $offset
* @param int $limit
* @return mixed
*/
db::$queries['column'] = function($table, $column, $where = null, $order = null, $offset = 0, $limit = null) {
return db::table($table)->where($where)->order($order)->offset($offset)->limit($limit)->column($column);
};
/**
* Shortcut for inserting a new row into a table
*
* @param string $table The name of the table, which should be queried
* @param string $values An array of values, which should be inserted
* @return boolean
*/
db::$queries['insert'] = function($table, $values) {
return db::table($table)->insert($values);
};
/**
* Shortcut for updating a row in a table
*
* @param string $table The name of the table, which should be queried
* @param string $values An array of values, which should be inserted
* @param mixed $where An optional where clause
* @return boolean
*/
db::$queries['update'] = function($table, $values, $where = null) {
return db::table($table)->where($where)->update($values);
};
/**
* Shortcut for deleting rows in a table
*
* @param string $table The name of the table, which should be queried
* @param mixed $where An optional where clause
* @return boolean
*/
db::$queries['delete'] = function($table, $where = null) {
return db::table($table)->where($where)->delete();
};
/**
* Shortcut for counting rows in a table
*
* @param string $table The name of the table, which should be queried
* @param string $where An optional where clause
* @return int
*/
db::$queries['count'] = function($table, $where = null) {
return db::table($table)->where($where)->count();
};
/**
* Shortcut for calculating the minimum value in a column
*
* @param string $table The name of the table, which should be queried
* @param string $column The name of the column of which the minimum should be calculated
* @param string $where An optional where clause
* @return mixed
*/
db::$queries['min'] = function($table, $column, $where = null) {
return db::table($table)->where($where)->min($column);
};
/**
* Shortcut for calculating the maximum value in a column
*
* @param string $table The name of the table, which should be queried
* @param string $column The name of the column of which the maximum should be calculated
* @param string $where An optional where clause
* @return mixed
*/
db::$queries['max'] = function($table, $column, $where = null) {
return db::table($table)->where($where)->max($column);
};
/**
* Shortcut for calculating the average value in a column
*
* @param string $table The name of the table, which should be queried
* @param string $column The name of the column of which the average should be calculated
* @param string $where An optional where clause
* @return mixed
*/
db::$queries['avg'] = function($table, $column, $where = null) {
return db::table($table)->where($where)->avg($column);
};
/**
* Shortcut for calculating the sum of all values in a column
*
* @param string $table The name of the table, which should be queried
* @param string $column The name of the column of which the sum should be calculated
* @param string $where An optional where clause
* @return mixed
*/
db::$queries['sum'] = function($table, $column, $where = null) {
return db::table($table)->where($where)->sum($column);
};