I like to use CodeIgniters page caching. But I've got a views counter in the controller, something like:
$this->db->query("UPDATE tb_product SET popularity=popularity+1 WHERE product_id=".$this->db->escape($this->uri->segment(2))."");
Is it possible to use page caching but make a exception to run this query only?
Yes. You could try to implement a hook. This would have to be the 'cache_override' hook. You could do the DB call from the hook.
http://ellislab.com/codeigniter/user-guide/general/hooks.html
Your hook method will have to call the original caching itself after doing the DB call.
function your_hook( )
{
// your DB code here
// Use some CI globals for this, see /system/core/Codeigniter.php
if ($OUT->_display_cache($CFG, $URI) == TRUE)
{
exit;
}
}
You could write a custom Output.php class and override (decorate) the original _display_cache method. Place your MY_Ouput.php in the /application/core directory and CI will use it automatically.
http://ellislab.com/codeigniter/user-guide/general/core_classes.html
Put something like this in it:
class MY_Output extends CI_Output
{
function _display_cache( &$CFG, &$URI )
{
// your DB call
// The original call
return parent::_display_cache( $CFG, $URI );
}
}
I didn't try this myself, but it should help you on your way. One of these will probably work. Good luck!
Thanks for your answer, but I've striped the counter out and wrote a cronjob which will get statistics from Google Analytics trough GAPI.
Related
Right now I have HTML blocks that involve a script to call data from another DB (outside of concrete5) and I've been using XHTTP Posts to retrieve the data.
The problem:
The scripts currently exist on the client side (e.g. you can see it by inspecting element) and I think it is being called from the client's device. Once I close down access to that external DB, this won't work anymore. I need these requests to come from my website and not the client.
The need:
I know there is a way to move these requests to within Concrete5, so that concrete5 is making the requests and not the client. I'm just not sure how to go about doing this. Any advice would be really appreciated.
You could do this by creating an end point.. which is an address on your website that returns data when called.
so for example calling
www.domain.com/api/getusers{id}
Could return a JSON object for users.
A quick example.
in your application/bootstrap/app.php file you can add.
Route::register(
'/api/getusers/{id}',
'application\Controller\endpoints::getUsers'
);
Then you add a controller in application/controllers/endpoints.php
<?php
namespace Application\Controller;
use Concrete\Core\Controller\Controller;
use \Concrete\Core\Http\Request;
class Endpoints extends Controller {
/* Get all a Regions Expeditions */
public function getUsers()
{
$id = Request::getInstance()->get('id');
$userid = $th->sanitize($id);
/* Do something with $id */
echo json_encode($output);
}
}
?>
More info can found here http://c5hub.com/learning/ajax-57-style/
Im really curious how does codeigniter achieve something like this:
$this->upload->do_upload($field_name)
it looks like method chaining, but it's not. How would the structure of this look in plain OOP?
I suppose its not as simple as..?
public function upload()
{
// stuff
return $this;
}
public function do_upload()
{
// stuff
return $foo;
}
Cheers!
When you load the library in your controller it's actually doing something like this behind the scene.
include 'system/libraries/Upload.php';
$this->upload = new CI_Upload();
Now you have "$this->upload" ready to use,
Next when you call "$this->upload->do_upload()" you're actually calling a method within the library.
On the other hand Method chaining, is just a matter of making methods returns an instance of the same object, You can review this in libraries code in CodeIgniter 3 on GitHub.
Where most library uses method chaining now.
I need that some code be executed before any MvcEvent::EVENT_BOOTSTRAP listener get execute. Evidently Module::onBootstrap is no an option. I end with the following code:
class Module
{
function init(\Zend\ModuleManager\ModuleManager $moduleManager)
{
$moduleManager->getEventManager()->attach(
MvcEvent::EVENT_BOOTSTRAP, array(ClassX, 'StaticMethodOfClassX'), 20000);
}
}
I don't want have hard code the array(ClassX, 'StaticMethodOfClassX') reference but get it from the service manager. My problem is that I don't know how to get an service manager reference inside the module's init method. Any help? or this is impossible in ZF2 right now? Whatever variant to this schema or opinion will be appreciate too ;)
EDIT:
I will clarify "Evidently Module::onBootstrap is no an option", cos may be is not so trivial ;)
Modules Module::onBootstrap methods are executed when the event MvcEvent::EVENT_BOOTSTRAP is triggered, but the attachment of each module's Module::onBootstrap method to that event depend of the order in which modules were loaded. Due to, the order in which a specific Module::onBootstrap method will be executed depend on what other modules exist and how other modules affect the order in which that specific module will be loaded. Beside, whatever listener attached to the MvcEvent::EVENT_BOOTSTRAP event with priority greater than 1 will be execute before any module Module::onBootstrap method, example the ViewManager::onBootstrap listener. So, to achieve what I want
I need that some code be executed before any
MvcEvent::EVENT_BOOTSTRAP listener get execute
modules obBootstrap methods are not an option.
This is a very old post but since no answer has been accepted and I recently needed to achieve the same thing, I thought I'd share my solution.
The reason I needed to access the ServiceManager before the Bootstrap event is triggered, was so I could manipulate the merged configuration with values retrieved from the database.
Problem:
The example found in the Zend documentation shows how to manipulate the merged configuration, but at that particular time the Service manager is empty, making it impossible to retrieve things like database adapters etc.
Solution:
In your module class, implement the interface InitProviderInterface and add the appropriate method.
public function init(ModuleManagerInterface $moduleManager)
{
$eventManager = $moduleManager->getEventManager();
$eventManager->attach(ModuleEvent::EVENT_LOAD_MODULES_POST, [$this, 'onLoadModulesPost']);
}
The EVENT_LOAD_MODULES_POST event will get invoked after the EVENT_MERGE_CONFIG event but before the EVENT_BOOTSTRAP event is triggered. Also at this particular time the ServiceManager will contain all the factories, invokable classes you're wanting to access.
Your callback method may look something like.
public function onLoadModulesPost(ModuleEvent $event)
{
/* #var $serviceManager \Zend\ServiceManager\ServiceManager */
$serviceManager = $event->getParam('ServiceManager');
$configListener = $event->getConfigListener();
$configuration = $configListener->getMergedConfig(false);
$someService = $serviceManager->get('Your/Custom/Service');
$information = $someService->fetchSomeInformation();
$configuration = array_merge($configuration, $information);
$configListener->setMergedConfig($configuration);
$event->setConfigListener($configListener);
$serviceManager->setAllowOverride(true);
$serviceManager->setService('Config', $configuration);
$serviceManager->setAllowOverride(false);
}
You can get it off the MvcEvent
$locator = $event->getTarget()->getServiceLocator()->get('YourObject')
If you don't have access to the event, you can set the event as a property on the Module class on bootstrap, and then use it in your init method whenever.
public function onBootstrap($event) {
$this->setMvcEvent($event);
}
function init(\Zend\ModuleManager\ModuleManager $moduleManager)
{
$locator = $this->mvc_event->getTarget()->getServiceLocator()->get('YourClass');
$moduleManager->getEventManager()->attach(
MvcEvent::EVENT_BOOTSTRAP, array(ClassX, 'StaticMethodOfClassX'), 20000);
}
Are you using ZfcBase in your application? The AbstractModule has a boostrap method (not onBootstrap) which is executed by this event handler in the init method
$sharedManager->attach('Zend\Mvc\Application', 'bootstrap', function($e) use ($instance, $moduleManager) {
$app = $e->getParam('application');
...
$instance->bootstrap($moduleManager, $app);
});
Of course you can use this approach without ZfcBase.
Then you can implement Zend\ServiceManager\ServiceLocatorAwareInterface:
public function bootstrap(\Zend\ModuleManager\ModuleManager $moduleManager, \Zend\Mvc\ApplicationInterface $app){
$this->setServiceLocator($app->getServiceManager());
parent::bootstrap($moduleManager, $app);
}
public function setServiceLocator(\Zend\ServiceManager\ServiceLocatorInterface $serviceLocator){
$this->_serviceLocator = $serviceLocator;
return $this;
}
public function getServiceLocator(){
return $this->_serviceLocator;
}
Maybe a bit later but hope it will help somebody else. At the init point there is no much services at the Service Manager but you can access it:
public function init(ModuleManager $moduleManager)
{
$sm = $moduleManager->getEvent()->getParam('ServiceManager');
$applicationConfig = $sm->get('applicationconfig');
var_dump($applicationConfig['modules']);
}
In this case we are retrieving the module names.
This is better idea.
class module
public function onBootstrap(MvcEvent $e)
{
$sm = $app->getServiceManager();
$config = $sm->get('config');
and this is all.
I have a simple logic problem. I'm starting on use CodeIgniter and I'm understand the Controller concept now. The view, for instance, is used only to generate content (not pre-proccess data), controller to get all infos need to view. Fine.
My problem is: I have a poll that is called as /poll/1 from an iframe, and I like to print it in other moment on another controller. This path is relatives to Poll::index(1) (logically talking) and I'm on Content::index().
I don't found explanation for cases like that on the CI UserGuide.
How I do?
Thanks.
Edit: I'll do an example code:
class Blog extends CI_Controller {
function index(){
// Do some prints
// Executes Poll::index(1), but store on some string
// Do some prints
}
}
class Poll extends CI_Controller {
function index($id){
// Do some prints
}
}
The idea is that: /poll/1 works and /blog too (but this second will print more content, with the poll).
hummm interesting i think using ob_start() might just work for you, if it was me i would rather use a ajax call to display poll data
here is the code.
class Blog extends CI_Controller {
function index(){
// Do some prints
// Executes Poll::index(1), but store on some string
ob_start();
Poll::index(1)
// You can now use this $output value to display or store in db or store in session,
// but remember CI session can only hold upto certain length as it uses cookie
$output = ob_get_contents();
ob_end_clean();
// Do some prints
}
}
class Poll extends CI_Controller {
function index($id){
// Do some prints
}
}
One way which is my favorite is use one as a super class so class Poll extends blog. This allows your poll to take advantage of your blog methods. Then you can use any parent methods and load the proper views in which ever class#method you want.
I have a function inside of a Helper in Magento that returns whether or not a customer attribute equals one.
Here is my Helper class
class Nie_Nie_Helper_Data extends Mage_Core_Helper_Abstract {
public function isNieAdmin() {
if(Mage::getSingleton('customer/session')->getCustomer()->getNieAdmin() == 1) {
return true;
} else {
return false;
}
}
}
Now when I call this function from a class that extends Mage_Core_Block_Template, everything seems to work fine. However when I try to use this inside one of my controllers, it does not work. In fact when I do Mage::getSingleton('customer/session')->getCustomer()->debug() the only variable that is returned is the website_id.
Does anyone know what I have to do in order to get this to work?
At the time of the controller the session objects are not yet initialised (although the session variable must be) so it returns a blank model. My guess is the website_id is deliberately set in the creation of a customer object to act as a default.
You could access $_SESSION['customer'] directly to find what you need, but that is messy. An alternative would be to do what you want in an event that occurs later.
I hope someone can come up with a better answer than mine.
Ok it looks like I had to load up the session myself. I had to put the following in my functions:
Mage::getSingleton('core/session', array('name' => 'frontend'));
Hope this helps.