I have the following code in my zend application bootstrap file
protected function _initSessionId() {
$this->bootstrap( 'session' );
$opts = $this->getOptions();
$cache = $this->bootstrap( 'cachemanager' )
->getResource( 'cachemanager' )
->getCache( 'memcached' );
Zend_Db_Table_Abstract::setDefaultMetadataCache( $cache );
Zend_Registry::set( 'cache', $cache );
$defaultNamespace = new Zend_Session_Namespace();
if ( !isset( $defaultNamespace->initialized ) ) {
Zend_Session::regenerateId();
$defaultNamespace->initialized = true;
}
}
I want to know what the line $this->bootstrap('session') actually does. Which class/function does it instantiate and call?
How to bootstrap a resource
bootstrap(<resource_name>) tells to Zend_Bootstrap to init the specified resource before continue. Usually is used for init required dependencies before init the actual resource
The resource bootstrap can be declared in two ways.
A PHP method in the Bootstrap class.
function _init<Resource_name>() { ... }
Or in the ini file
resources.<resource_name>
in the last case (ini file) a class extending from Zend_Application_Resource_ResourceAbstract must be declared with the code for init the resource.
Session resource bootstrap
For the concrete case of bootstrap('session') by default use the init() method declared in Zend_Application_Resource_Session
Related
Why does Codeignitor not accept Controller in composer autoload when validating routes?
It's checking by: class_exists($class, FALSE) where the second parameter disables checking in autoload.
https://github.com/bcit-ci/CodeIgniter
$e404 = FALSE;
$class = ucfirst($RTR->class);
$method = $RTR->method;
if (empty($class) OR ! file_exists(APPPATH.'controllers/'.$RTR->directory.$class.'.php'))
{
$e404 = TRUE;
}
else
{
require_once(APPPATH.'controllers/'.$RTR->directory.$class.'.php');
if ( ! class_exists($class, FALSE) OR $method[0] === '_' OR method_exists('CI_Controller', $method))
{
$e404 = TRUE;
}
elseif (method_exists($class, '_remap'))
{
$params = array($method, array_slice($URI->rsegments, 2));
$method = '_remap';
}
elseif ( ! method_exists($class, $method))
{
$e404 = TRUE;
}
/**
* DO NOT CHANGE THIS, NOTHING ELSE WORKS!
*
* - method_exists() returns true for non-public methods, which passes the previous elseif
* - is_callable() returns false for PHP 4-style constructors, even if there's a __construct()
* - method_exists($class, '__construct') won't work because CI_Controller::__construct() is inherited
* - People will only complain if this doesn't work, even though it is documented that it shouldn't.
*
* ReflectionMethod::isConstructor() is the ONLY reliable check,
* knowing which method will be executed as a constructor.
*/
elseif ( ! is_callable(array($class, $method)))
{
$reflection = new ReflectionMethod($class, $method);
if ( ! $reflection->isPublic() OR $reflection->isConstructor())
{
$e404 = TRUE;
}
}
}
Looking over the git history, the change was introduced in 49e68de96b420a444c826995746a5f09470e76d9, with the commit message being:
Disable autoloader call from class_exists() occurences to improve performance
Note: The Driver libary tests seem to depend on that, so one occurence in CI_Loader is left until we resolve that.
So the nominal reason is performance.
If you want to ensure that the controller classes will be loaded on each request, you can add the files explicitly to the Composer autoload.files attribute, like so:
composer.json
{
"autoload": {
"files": [
"src/Foo.php"
]
},
"name": "test/64166739"
}
src/Foo.php
<?php
class Foo {}
test.php
<?php
$loader = require('./vendor/autoload.php');
var_dump(class_exists('Foo', false));
When run (via php test.php for example), we get the following output:
bool(true)
Additional
Looking over the code around that call to class_exists, it would appear that the controller files should follow a convention such that, for example with the built in Welcome controller and the default settings, the file that defines it should exist at:
application/controllers/Welcome.php
and so after require_onceing that file, the call to class_exists is a reasonably simple sanity check to ensure that the file did in fact define that class. So, based on this assumption about how controllers are added to the CodeIgniter application (ie all in the application/controllers directory and named the same as the class that they define), it's reasonable to bypass the autoloader when performing that check.
If you wanted to ensure the controllers are loaded when needed, the CodeIgniter way, they should be added to the application as listed above.
How can I pass a dynamic dependency from one registered container definition to another? In this case, a generic Database object wants to inherit from a generic Config object. The twist is config is not static, but loaded depending on a given environment variable.
Config pertinent methods
public function __construct()
{
$configFile = 'example.config.yml';
$yamlParser = new Parser();
$reader = new Config\Reader($yamlParser);
$configYaml = $reader->parse(file_get_contents($configFile));
$config = new Config\Environment(getenv('SITE'), $configYaml);
$this->config = $config;
}
public function getEnvironmentConfig()
{
return $this->config;
}
Registering config is as simple as
$container->register('config', 'Config');
Database is currently added to the container as follows:
$container
->register('database', 'Database')
->addArgument($config->getEnvironmentConfig('Database', 'db.username'))
->addArgument($config->getEnvironmentConfig('Database', 'db.password'))
;
But I want to do something like
$container
->register('database', 'Database')
->addArgument(new Reference('config')->getEnvironmentConfig('Database', 'db.username'))
->addArgument(new Reference('config')->getEnvironmentConfig('Database', 'db.password'))
;
The $config in-PHP variable makes migrating from a PHP-built config impossible. I want to define the services in yaml force the container to:
Instantiate Config
Parse the config yaml file and create an environment-specific version
Return this on a call to getEnvironmentConfig
Is this possible?
This was solved by using the Expression Language Component
So you can easily chain method calls, for example:
use Symfony\Component\ExpressionLanguage\Expression;
$container->register('database', 'Database')
->addArgument(new Expression('service("config").getEnvironmentConfig("Database", "db.username")'));
Hi I am having an issue
Say I have a folder structure in CodeIgniter
application/
controllers/
models/
views/
gmail_library/
Now I have written a controller
class invite_friends extends CI_Controller {
function __construct() {
parent::__construct();
$this->load->gmail_library('Config'); // this line is giving me error
session_start();
}
}
How can I set this thing like this?
First of all, note that CodeIgniter doesn't use overloading by __call() to implement dynamic methods. Thus there is no way to get such a gmail_library() methods to work.
The conventional method
From the User Guide:
Your library classes should be placed within your
application/libraries folder, as this is where CodeIgniter will look
for them when they are initialized.
If you're using CI Loader class to load a library or helper, you should follow CI's conventions.
application/libraries/Myclass.php
$this->load->library('myclass');
$this->myclass->my_method();
Using relative paths
1) You put your library files in sub-directories within the main libraries folder:
application/libraries/gmail/Gmail_config.php
I renamed your Config.php file name to prevent the occurrence of conflict with CI config core class.
$this->load->library('gmail/gmail_config');
2) Also you can use relative path within the Loader::library() method to load the library file from the outside of the library folder, as follows:
The path to the file is relative. So you can use ../ to go one UP level in path.
Again: I renamed your Config.php file name to prevent the occurrence of conflict with CI config core class.
$this->load->library('../gmail_library/Gmail_config');
An old question, I know, but I came across this looking for a way to use classes (libraries) from outside the application folder and I liked to keep it in 'the CI way of doing this'. I ended up extending the CI_Loaderclass:
I basically copied the _ci_load_class function and added an absolute path
<? if (!defined('BASEPATH')) exit('No direct script access allowed');
class MY_Loader extends CI_Loader {
protected $absPath = '/home/xxxxx/[any-path-you-like]/common/';
/**
* Load class
*
* This function loads the requested class.
*
* #param string the item that is being loaded
* #param mixed any additional parameters
* #param string an optional object name
* #return void
*/
public function commonLibrary($class, $params = NULL, $object_name = NULL)
{
// Get the class name, and while we're at it trim any slashes.
// The directory path can be included as part of the class name,
// but we don't want a leading slash
$class = str_replace('.php', '', trim($class, '/'));
// Was the path included with the class name?
// We look for a slash to determine this
$subdir = '';
if (($last_slash = strrpos($class, '/')) !== FALSE)
{
// Extract the path
$subdir = substr($class, 0, $last_slash + 1);
// Get the filename from the path
$class = substr($class, $last_slash + 1);
}
// We'll test for both lowercase and capitalized versions of the file name
foreach (array(ucfirst($class), strtolower($class)) as $class)
{
$subclass = $this->absPath.'libraries/'.$subdir.config_item('subclass_prefix').$class.'.php';
// Is this a class extension request?
if (file_exists($subclass))
{
$baseclass = BASEPATH.'libraries/'.ucfirst($class).'.php';
if ( ! file_exists($baseclass))
{
log_message('error', "Unable to load the requested class: ".$class);
show_error("Unable to load the requested class: ".$class);
}
// Safety: Was the class already loaded by a previous call?
if (in_array($subclass, $this->_ci_loaded_files))
{
// Before we deem this to be a duplicate request, let's see
// if a custom object name is being supplied. If so, we'll
// return a new instance of the object
if ( ! is_null($object_name))
{
$CI =& get_instance();
if ( ! isset($CI->$object_name))
{
return $this->_ci_init_class($class, config_item('subclass_prefix'), $params, $object_name);
}
}
$is_duplicate = TRUE;
log_message('debug', $class." class already loaded. Second attempt ignored.");
return;
}
include_once($baseclass);
include_once($subclass);
$this->_ci_loaded_files[] = $subclass;
return $this->_ci_init_class($class, config_item('subclass_prefix'), $params, $object_name);
}
// Lets search for the requested library file and load it.
$is_duplicate = FALSE;
foreach ($this->_ci_library_paths as $path)
{
$filepath = $this->absPath.'libraries/'.$subdir.$class.'.php';
// Does the file exist? No? Bummer...
if ( ! file_exists($filepath))
{
continue;
}
// Safety: Was the class already loaded by a previous call?
if (in_array($filepath, $this->_ci_loaded_files))
{
// Before we deem this to be a duplicate request, let's see
// if a custom object name is being supplied. If so, we'll
// return a new instance of the object
if ( ! is_null($object_name))
{
$CI =& get_instance();
if ( ! isset($CI->$object_name))
{
return $this->_ci_init_class($class, '', $params, $object_name);
}
}
$is_duplicate = TRUE;
log_message('debug', $class." class already loaded. Second attempt ignored.");
return;
}
include_once($filepath);
$this->_ci_loaded_files[] = $filepath;
return $this->_ci_init_class($class, '', $params, $object_name);
}
} // END FOREACH
// One last attempt. Maybe the library is in a subdirectory, but it wasn't specified?
if ($subdir == '')
{
$path = strtolower($class).'/'.$class;
return $this->_ci_load_class($path, $params);
}
// If we got this far we were unable to find the requested class.
// We do not issue errors if the load call failed due to a duplicate request
if ($is_duplicate == FALSE)
{
log_message('error', "Unable to load the requested class: ".$class);
show_error("Unable to load the requested class: ".$class);
}
}
}
Put the file MY_Loader.php in the application/core folder and load your libs with:
$this->load->commonLibrary('optional_subfolders/classname', 'classname');
$this->classname->awesome_method();
Code:
public function init()
{
global $cookie, $smarty, $cart, $iso, $defaultCountry, $protocol_link, $protocol_content, $link, $css_files, $js_files;
if(!session_id()){
if(!isset($_SESSION)){
session_start();
}
}
$cookie->id_cart=$_SESSION['pj_punchout_id'];
if (self::$initialized)
return;
self::$initialized = true;
$css_files = array();
$js_files = array();
Error:
Strict Standards: Creating default object from empty value in C:\xampp\htdocs\pjwebstoredev\classes\FrontController.php on line 82
I'm assuming that you're using Prestashop v1.4. The main problem I can see is that you've edited one of the core files, so most bets are off for the ability to support your code in the future. If you want to cleanly modify the behaviour of the core classes, then you should create an override called /override/classes/FrontController.php with the following contents:
class FrontController extends FrontControllerCore
{
function init()
{
// Your additional custom init code goes here
parent::init();
// And/or additional custom init code goes here
}
}
That's not the fundamental problems though, as we get to the next stage. The error you're seeing is because you are tring to use the global variable $cookie, but at a point in time before the variable is set to anything meaningful (the global cookie variable is actually initialised later in the very function you were modifying). Since you need to manipulate the cookie properties then you could try creating a temporary cookie object, use it to manipulate the user's cookie, then call the core code e.g.
class FrontController extends FrontControllerCore
{
function init()
{
if ( !session_id() ) {
if( !isset($_SESSION) ) {
session_start();
}
}
$cookieLifetime = (time() + (((int)Configuration::get('PS_COOKIE_LIFETIME_FO') > 0 ? (int)Configuration::get('PS_COOKIE_LIFETIME_FO') : 1)* 3600));
$cookie = new Cookie('ps', '', $cookieLifetime);
$cookie->id_cart=$_SESSION['pj_punchout_id'];
parent::init();
}
}
I am trying to use phpThumb in my application by making a custom autoloader.
class My_Loader_Autoloader_PhpThumb implements Zend_Loader_Autoloader_Interface {
static protected $php_thumb_classes = array(
'PhpThumb' => 'PhpThumb.inc.php',
'ThumbBase' => 'ThumbBase.inc.php',
'PhpThumbFactory' => 'ThumbLib.inc.php',
'GdThumb' => 'GdThumb.inc.php',
'GdReflectionLib' => 'thumb_plugins/gd_reflection.inc.php',
);
/**
* Autoload a class
*
* #param string $class
* #return mixed
* False [if unable to load $class]
* get_class($class) [if $class is successfully loaded]
*/
public function autoload($class) {
$file = APPLICATION_PATH . '/../library/PhpThumb/' . self::$php_thumb_classes[$class];
if (is_file($file)) {
require_once($file);
return $class;
}
return false;
}
}
i saved this file as PhpThumb.php in the loaders/Autoloader folder. Then added this line to the bootstrap file:
Zend_Loader_Autoloader::getInstance()->pushAutoloader(new My_Loader_Autoloader_PhpThumb());
But it produces an error saying the class was not found. I am guessing that the 'CustomLoader_PhpThumb.php' needs to be saved somewhere else. Any idea guys ?
Update1:
Bootstrap.php file contents
<?php
class Bootstrap extends Zend_Application_Bootstrap_Bootstrap
{
protected function _initAutoload()
{
$autoLoader=Zend_Loader_Autoloader::getInstance();
$resourceLoader=new Zend_Loader_Autoloader_Resource(array(
'basePath'=>APPLICATION_PATH,
'namespace'=>'',
'resourceTypes'=>array(
'form'=>array(
'path'=>'forms/',
'namespace'=>'Form_'
),
'models'=>array(
'path'=>'models/',
'namespace'=>'Model_'
),
)
));
//return $autoLoader;
$resourceLoader->addResourceType('loader', 'loaders/', 'My_Loader_');
$autoLoader->pushAutoloader($resourceLoader);
$autoLoader->pushAutoloader(new My_Loader_Autoloader_PhpThumb());
}
}
?>
I'm also using PhpThumb and the same autoloader. In my case however it is called My_Loader_Autoloader_PhpThumb and is located in APPLICATION_PATH . '/loaders/Autoloader/PhpThumb.php.
In my Bootstrap.php, first I load the loaders path to the Zend_Loader_Autoloader and then I push the My_Loader_Autoloader_PhpThumb autoloader as follows:
$autoLoader = Zend_Loader_Autoloader::getInstance();
$resourceLoader = new Zend_Loader_Autoloader_Resource(array(
'basePath' => APPLICATION_PATH,
'namespace' => '',
));
$resourceLoader->addResourceType('loader', 'loaders/', 'My_Loader_');
$autoLoader->pushAutoloader($resourceLoader);
$autoLoader->pushAutoloader(new My_Loader_Autoloader_PhpThumb());
Hope this will help.
PhpThumb.php should be saved to library/CustomLoader folder, and you should setup autoloader for this class also, for example in application.ini:
autoloaderNamespaces[] = "CustomLoader_"
or in Bootstrap.php:
$autoloader->registerNamespace('CustomLoader_');
I couldn't try, I hope it works!
I did it in another way, long more easy, without any autoloader, just using "My".
1.- Create a phpThumbFolder with all the files of the library into project/library/My/PhpThumb
2.- Create a file named PhpThumbFactory.php into that folder with the following content:
require_once('ThumbLib.inc.php');
class My_PhpThumb_PhpThumbFactory
{
public static function create ($filename = null, $options = array(), $isDataStream = false)
{
return PhpThumbFactory::create($filename, $options, $isDataStream);
}
}
3.- Enjoy:
public function editimageAction()
{
//rutaImg is the physical path to my images defined in application.ini
$rutaImg = Zend_Registry::get('config')->rutaImg. "test.jpg";
//Call to our "gateway" class
$thumb = My_PhpThumb_PhpThumbFactory::create($rutaImg);
//Resize
$thumb->adaptiveResize(20, 20);
//Show
$thumb->show();
$this->_helper->viewRenderer->setNoRender();
$this->_helper->layout->disableLayout();
}
I hope it can help anyone ;)
P.D. The "gateway" class is to avoid modifying any code of the library, so any possible update is easy.