<?php
/**
* Web Service Tutorial <http://github.com/kristovaher/Wave-Framework>
* Tutorial Movie Model
*
* It is recommended to extend View classes from WWW_Factory in order to
* provide various useful functions and API access for the view.
*
* @package Factory
* @author Kristo Vaher <kristo@waher.net>
* @copyright Copyright (c) 2012, Kristo Vaher
* @license Unrestricted
* @tutorial /doc/pages/tutorial_webservice.htm
* @since 1.0.0
* @version 1.0.0
*/
class WWW_model_movie extends WWW_Factory {
/**
* It is recommended to define all data variables here. Usually the
* data variables have the same names as the column names of database
* rows from a table.
*/
public $id=0;
public $title;
public $year;
/**
* This function simply sets the title of the movie
*
* @param string $title movie title
* @return boolean
*/
public function setTitle($title){
$this->title=$title;
return true;
}
/**
* This function simply sets the year of the movie
*
* @param string $year movie year
* @return boolean
*/
public function setYear($year){
$this->year=$year;
return true;
}
/**
* This loads a movie based on its ID
*
* This example uses simple serialized database in filesystem, but it
* could load data from MySQL or other databases
*
* @param integer $id movie ID
* @return array if success, boolean if fails
*/
public function loadMovie($id=0){
if($id!=0){
// Database location
$dbLoc=$this->getState('directory-data').'movies.db';
// Making sure that current database exists
if(file_exists($dbLoc)){
$curDb=unserialize(file_get_contents($dbLoc));
} else {
return false;
}
// If this movie exists in the database, we assign its values to
// current object.
if(isset($curDb[$id])){
$this->id=$id;
$this->title=$curDb[$id]['title'];
$this->year=$curDb[$id]['year'];
return array(
'id'=>$id,
'title'=>$curDb[$id]['title'],
'year'=>$curDb[$id]['year']
);
} else {
return false;
}
} else {
return false;
}
}
/**
* This loads all movies from database into returned value
*
* This example uses simple serialized database in filesystem, but it
* could load data from MySQL or other databases
*
* @return array
*/
public function loadAllMovies(){
// Database location
$dbLoc=$this->getState('directory-data').'movies.db';
// Making sure that current database exists
if(file_exists($dbLoc)){
$curDb=unserialize(file_get_contents($dbLoc));
} else {
// Since database does not exist (and thus movies don't exist) we return empty array instead of false
return array();
}
// We store all movie data in a separate array that will be returned
$allMovies=array();
foreach($curDb as $id=>$data){
$movie=array();
$movie['id']=$id;
$movie['title']=$data['title'];
$movie['year']=$data['year'];
$allMovies[]=$movie;
}
return $allMovies;
}
/**
* This saves the current movie in database
*
* This example uses simple serialized database in filesystem, but it
* could load data from MySQL or other databases
*
* @return integer for movie ID if success, false if fails
*/
public function saveMovie(){
// Making sure that title and year are both set
if($this->title!='' && $this->year!=''){
// Database location
$dbLoc=$this->getState('directory-data').'movies.db';
// If database file already exists, we simply load the database and unserialize its data to add a new movie to it
if(file_exists($dbLoc)){
$curDb=unserialize(file_get_contents($dbLoc));
// ID's are indexes in the stored array, so we seek the highest index in that array
$nextId=max(array_keys($curDb))+1;
} else {
// Since database did not exist, an array is created for new database
$curDb=array();
$nextId=1;
}
// Creating data node of current movie
$movie=array();
$movie['title']=$this->title;
$movie['year']=$this->year;
// Adding the new node into database array
$curDb[$nextId]=$movie;
// We overwrite the old database with the updated database with a new movie
if(file_put_contents($dbLoc,serialize($curDb))){
return $nextId;
} else {
return false;
}
} else {
return false;
}
}
/**
* This deletes movie with a specific ID from database
*
* This example uses simple serialized database in filesystem, but it
* could load data from MySQL or other databases
*
* @param string $id movie ID
* @return boolean
*/
public function deleteMovie($id=0){
// This function, if defined with an ID, deletes specific ID, otherwise it deletes currently active ID
if($id!=0){
$deleteId=$id;
} else if($this->id!=0){
$deleteId=$this->id;
} else {
// No ID was set in here nor in the current object
return false;
}
// Database location
$dbLoc=$this->getState('directory-data').'movies.db';
// If database does not exist then we have no movies to delete
if(file_exists($dbLoc)){
$curDb=unserialize(file_get_contents($dbLoc));
} else {
return false;
}
// If such an ID exists in database, it is simply unset
if(isset($curDb[$deleteId])){
unset($curDb[$deleteId]);
} else {
return false;
}
// We overwrite the old database with the updated database
if(file_put_contents($dbLoc,serialize($curDb))){
return true;
} else {
return false;
}
}
}
?>
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