I encounter with one strange line of code in the larvel 5.0
echo (new static)->getMorphClass();
This echo the namespace of the model. Now didn't understand how come new and static are used at once.
PHP version is 5.6.3
new static is just a php construct and has nothing to do with Laravel. The static keyword references the current class, so new static is nothing more than a call to the current class constructor.
Consider this example:
class Cat {
private function __construct($type)
{
$this->type = $type;
}
public static function getACat($newType)
{
return new static($newType); // same as 'return new Cat($newType);'
}
public function print()
{
echo $this->type;
}
}
$cat1 = Cat::getACat("Fatty");
$cat1->print(); // --> Fatty
Related
I have a template class that is in its own namespace and that I add to my code with `
new InfoLabel()`{ Text = "abc" };
Note that this is just a very simple example and I have other template objects that don't just depend on one thing, for example an object with 2-3 labels.
Is there a way that I can apply Xamarin C# fluent to create a templated object?
Here is the simple example object that I have:
namespace Test
{
public class InfoLabel : Label
{
public InfoLabel()
{
SetDynamicResource(FontFamilyProperty, Const.Fonts.DefaultRegular);
SetDynamicResource(FontSizeProperty, Const.Fonts.InfoTextFontSize);
SetDynamicResource(TextColorProperty, Const.Colors.InfoLabelColor);
LineBreakMode = LineBreakMode.WordWrap;
VerticalOptions = LayoutOptions.Start;
HorizontalTextAlignment = TextAlignment.Start;
}
}
}
What I would like to know is how I can set up the same thing using the latest C# fluent standards?
Here is the way I think it might be done. I used a Build() method but I would appreciate if someone more skilled than me could tell me if I am doing it correctly as this is a big change from what I am used to:
namespace Test
{
public class InfoLabel
{
public InfoLabel()
{
Build();
}
void Build() =>
new Label
{
LineBreakMode = LineBreakMode.WordWrap,
}
.TextLeft()
.DynamicResources((Label.FontFamilyProperty, Const.Fonts.DefaultRegular),
(Label.FontSizeProperty, Const.Fonts.InfoTextFontSize),
(Label.TextColorProperty, Const.Colors.InfoLabelColor));
Here is another idea that I have:
namespace Test
{
public class InfoLabel : Label
{
public InfoLabel()
{
LineBreakMode = LineBreakMode.WordWrap;
Build();
}
void Build() =>
this.TextLeft()
.DynamicResources((Label.FontFamilyProperty, Const.Fonts.DefaultRegular),
(Label.FontSizeProperty, Const.Fonts.InfoTextFontSize),
(Label.TextColorProperty, Const.Colors.InfoLabelColor));
Note that I am using an extension method for the resources.
You could create the instance of label like following
public class InfoLabel : Label
{
static InfoLabel CreateDefaultLabel()
{
return new InfoLabel
{
LineBreakMode = LineBreakMode.WordWrap,
}
.TextLeft()
.DynamicResources((Label.FontFamilyProperty, Const.Fonts.DefaultRegular),
(Label.FontSizeProperty, Const.Fonts.InfoTextFontSize),
(Label.TextColorProperty, Const.Colors.InfoLabelColor));
}
}
var label = InfoLabel.CreateDefaultLabel();
For more details of the usage of markup you could check this blog .
I'm not understanding how to use the initialization function in the code below. Can you explain it to me?
Class A
{
protected $classB;
public function __construct()
{
$this->classB = new ClassB();
}
}
Class A
{
protected $classB;
public function __construct(ClassB $classB)
{
$this->classB = $classB;
}
}
in the second way you always have to make your object like this.
$clasa = new ClassA($classb);
in the first way you are creating the object inside of the constructor.
the second way is an injection. and could be usefull when for example you need some attributes already seted in the object.
I just noticed that some of my listeners do not use the queue I expected them to use. Our team upgraded from Laravel 5.2 to 5.5 a few weeks back, and I guess this is when the problem started happening. There hasn't been much load on the system, so I only discovered it by accident.
Anyway. I used to set the queue name on the listener through a queue method, like so:
public function queue(QueueManager $handler, $method, $arguments): void
{
$handler->connection()->push($method, $arguments, Queue::getNotificationQueue());
}
This approach is not working anymore, so a default queue ends up handling the job instead of the expected notification queue.
So I looked at the documentation https://laravel.com/docs/5.5/events#queued-event-listeners, which states that the name should be set on a queue property on the listener. My problem is that I have the queue name in an environment variable, so I cannot just set it directly as a property, as shown in the documentation and it does not work to set it on the constructor, like so:
protected $queue;
public function __construct()
{
$this->queue = Queue::getNotificationQueue();
}
Does anyone here have an idea of how I can get around this?
Specifically for SQS queues the $queue property acts a bit weird because it doesn't seem to refer to queues defined in queue.php, but it expects a full queue url, so even the example in the documentation seems off.
But for dynamic queue names on queued event listeners that for example changes depending on environment, making a custom SqsConnector and SqsQueue will be one way to solve your issue.
Here is an example of implementation.
ACMEEventListener.php
class ACMEEventListener implements ShouldQueue
{
public function handle(Event $event): void
{
// I'm going to a custom queue
}
public static function getQueue(): string
{
return 'https://sqs.eu-central-1.amazonaws.com/<account id>/<queue name>';
}
}
CustomSqsConnector.php
use Illuminate\Queue\Connectors\SqsConnector;
use Aws\Sqs\SqsClient;
class CustomSqsConnector extends SqsConnector
{
public function connect(array $config)
{
$sqs = new SqsClient($config);
return new CustomSqsQueue($sqs, $config['queue']);
}
}
CustomSqsQueue.php
class CustomSqsQueue extends \Illuminate\Queue\SqsQueue
{
public function push($job, $data = '', $queue = null)
{
if ($job instanceof CallQueuedListener && method_exists($job->class, 'getQueue')) {
$queue = $job->class::getQueue();
}
return $this->pushRaw($this->createPayload($job, $data), $queue);
}
}
CustomSqsQueueServiceProvider.php
class CustomSqsQueueServiceProvider extends ServiceProvider
{
public function register(): void
{
$this->app->booted(function () {
$this->app['queue']->extend('custom_sqs', function () {
return new CustomSqsConnector;
});
});
}
}
And then in your queue.php, your default SQS connection driver from sqs to custom_sqs
I develop lumen package and I don't know test this.
In my package, I use global method config() and abort() but this methods exist with bootstrap/app.php and I have'nt this file in my package.
I'm thinking redefine this methods with dummies class but I have to write only one test method in test class when I test a method with a changement in the config to can re-call an antoher config dummy class .
It's not practical and I guess there's better.
I can share code if you want.
--- Edit
This is example :
Class CheckAuthorizationTest
public function testCanSeeOtherUserRoles()
{
$this->assertTrue(CheckAuthorization::canSeeOtherUserRoles($user, $user));
}
Class CheckAuthorization
static public function canSeeOtherUserRoles(Model $user_parent, Model $user_child)
{
return self::roleIsParentOfDirectChild($user_parent, $user_child);
}
static public function canShowGroup(array $parent_group, string $child_group)
{
$groupsHelper = new GroupsHelper();
foreach ($parent_group as $group) {
if (in_array($child_group, config('roles.roles'))) {
return true;
}
}
abort(403);
}
Result :
There was 1 error:
1) ::testCanSeeOtherUserRoles
ReflectionException: Class config does not exist
I want to set the session after user login in opencart-3.0.2.0
I am new to opencart, I have just created this two files only in the corresponding folder.anything else I need to be done to trigger the event.
I am referring this link to trigger the event in opencart:https://isenselabs.com/posts/opencart2-event-system-tutorial
I have searched a lot on google still no result found.
Code that I am using to trigger event in opencart.
path : admin/controller/module/mymodule.php
Code :
public function install() {
$this->load->model('extension/event');
$this->model_extension_event->addEvent('mymodule', 'pre.admin.store.delete', 'module/mymodule/on_store_delete');
$this->model_extension_event->addEvent('mymodule', 'post.customer.login', 'module/mymodule/post_customer_login_customtoken');
$this->model_extension_event->addEvent('mymodule', 'post.customer.logout', 'module/mymodule/post_customer_logout_function');
}
public function uninstall() {
$this->load->model('extension/event');
$this->model_extension_event->deleteEvent('mymodule');
}
public function on_store_delete($store_id) {
$this->load->model('setting/store');
$store_info = $this->model_setting_store->getStore($store_id);
$admin_mail = $this->config->get('config_email');
mail($admin_mail, "A store has been deleted", "The store " . $store_info['url'] . " was deleted.");
}
}
path : catalog/controller/module/mymodule.php
Code :
<?php
class ControllerModuleMyModule extends Controller {
public function post_customer_login_customtoken() {
$str = 'abcdefghigklmnopqrstuvwxyz';
$shuffled = str_shuffle($str);
$this->session->data['custom_token'] = $shuffled;
}
public function post_customer_logout_function(){
$this->log->write("post_customer_logout_function");
unset($this->session->data['custom_token']);
}
}
That tutorial is for OpenCart 2.0 - 2.1, in OpenCart 2.2 and above Event system has been changed.
For OpenCart 3.0.2.0 instead of:
$this->load->model('extension/event');
// and
$this->model_extension_event->addEvent
use:
$this->load->model('setting/event');
// and
$this->model_setting_event->addEvent
Instead of:
'post.customer.login'
use:
'catalog/controller/account/login/after'
Instead of:
deleteEvent
Use:
deleteEventByCode
So it must be:
admin\controller\extension\module\mymodule.php
public function install(){
$this->load->model('setting/event');
$this->model_setting_event->addEvent('mymodule', 'catalog/controller/account/login/after', 'extension/module/mymodule/after_customer_login_customtoken');
}
public function uninstall(){
$this->load->model('setting/event');
$this->model_setting_event->deleteEventByCode('mymodule');
}
catalog\controller\extension\module\mymodule.php
class ControllerExtensionModuleMyModule extends Controller {
public function after_customer_login_customtoken(){
$this->log->write('test');
}
}