Call to a member function on a non-object
I have a template class that can either parse array variables in TPL files, or simple display a pure HTML file. The parse function works fine, but the display function returns the following error:
"Fatal error: Call to a member function display() on a non-object in C:\xampp\htdocs\clancms\controllers\home.php on line 7"
This is home.php
class Home extends Controller {
function index(){
echo $this->template->display('index_body.tpl');
}
}
This is the template class
class Template {
var $file = '';
var $vars = '';
var $themeID = '';
var $themeTitle = '';
var $themeDescription = '';
var $themePath = '';
function getTheme(){
if($_SESSION['memberid'] != NULL){
$query = "
SELECT memberid, themeid
FROM members
WHERE memberID = '".$_SESSION['memberID']."
LIMIT 1";
if($query = mysql_query($query)){
$member = mysql_fetch_assoc($query);
$query = "
SELECT themeID, themeTitle, themeDescription, themePath
FROM {DB_PREF}
WHERE themeID = ".$member['themeID']."
LIMIT 1";
if($query = mysql_query($query)){
$theme = mysql_fetch_assoc($query);
开发者_运维问答 $this->themeID = $theme['themeID'];
$this->themePath = BASE_PATH.'/templates/'.$theme['themePath'];
$this->themeTitle = $theme['themeTitle'];
$this->themeDescription = nl2br(htmlspecialchars($theme['themeDescription']));
} else {
$this->themePath = BASE_PATH.'/templates/default';
}
} else {
$this->themePath = BASE_PATH.'/templates/default';
}
} else {
$this->themePath = BASE_PATH.'/templates/default';
}
}
function parse($file, $vars){
$this->getTheme();
if(file_exists($this->themePath.'/'.$file)){
$file = file_get_contents($this->themePath.'/'.$file);
foreach($vars as $key => $val){
$file = str_replace('{'.$key.'}', $val, $file);
}
echo $file;
} else {
die('Template parser error: the file \''.$this->themePath.'/'.$file.'\' does not exist!');
}
}
function display($file){
if(file_exists($this->themePath.'/'.$file)){
$file = file_get_contents($this->themePath.'/'.$file);
echo $file;
} else {
die('Template parser error: the file \''.$this->themePath.'/'.$file.'\' does not exist!');
}
}
}
Update
Sorry, I forgot to include that
<?php
class Controller {
function Controller(){
$this->initialize();
}
function initialize(){
$classes = array(
'load' => 'Load',
'uri' => 'URI',
'config' => 'Config',
'template' => 'Template'
);
foreach($classes as $var => $class){
if(file_exists($this->app_path.'/classes/'.$class.'.php')){
require_once(BASE_PATH.'/classes/'.$class.'.php');
$this->$var =& new $class;
} else {
return FALSE;
}
}
}
}
?>
The member variable $template on your Home instance is not being initialized. Somewhere there needs to be a call to $this->template = new Template();
or something equivalent.
This should probably be in the Home __construct or in the parent Controller class.
Based on your Controller initialise function, I would assume that a file does not exist for one of the given classes and so it is exiting the function early with return false;
Echo out the classes that are being loaded, and I would be surprised if its making it to the end of the array.
It should be
function index(){
echo $this->display('index_body.tpl');
}
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