I created a presta module and use the actionCartSave hook.
But when I print string in hookActionCartSave function, it display double result
I dont know why, can you explain for me that?
My code:
public function hookActionCartSave()
{
if (!$this->active || !Validate::isLoadedObject($this->context->cart) || !Tools::getIsset('id_product')) return;
print_r('expression');
}
The result is:
expressionexpression
Thank you
The hook ActionCartSave is called in add and update method of Cart class.
public function add($autodate = true, $null_values = false)
{
/* ... */
Hook::exec('actionCartSave');
return $return;
}
public function update($null_values = false)
{
/* ... */
Hook::exec('actionCartSave');
return $return;
}
So if you search in various controller you discover that the cart is saved more times, so the hook is called more of one times :)
Related
I have a REST API. I need to create presentation (DTO) object, but the construction of this object depends on request - it differs in 15%.
I wonder what pattern should I use.
My case:
//presentation-DTO
class Item {
private $name;
private $price;
private $tags;
private $liked; //is Liked by logged user
...
public function __construct(Item $item, bool $liked, ...)
{
$this->name = $item->getName();
$this->price = $item->getPrice();
$this->tags = $item->getTags();
$this->liked = $liked;
...
}
}
When user is not logged in - I don't need $liked
When showing list of items - I don't need $tags
And there are more attributes that works as above.
My first idea was to use Builder principle.
$itemBuilder = new ItemBuilder();
$itemBuilder->setItem($item);
...
if($user) {
$itemBuilder->setUserLiked($userLiked);
...
}
return $itemBuilder->build();
It solves my problem with too many parameters in constructor.
But still, I also don't need all parameters to be constructed - eg. I don't need tags (on lists). As I use lazy load, I don't want my dto constructor to call them.
So I thought, maybe Factory.. but then my problem with too many (and optional) parameters is returning.
How will you solve this?
Sorry I don't have required points to make a comment hence an answer.
What are you trying to do with the Item class. Your class is Item and first parameter is also of type Item. I cannot visualizes how its going to work.
I will prefer to keep business login to set proper properties in a separate class:
/**
* A class for business logic to set the proper properties
*/
class ItemProperties {
private $item;
public $isLogin = false;
public $showList = false;
.....
public function __construct(Item &$item) {
// set all properties;
}
public function getProperties() {
$retVal = [];
if($this->isLogin == true) {
$retVal['liked'] = true;
}
if($this->showList == true) {
$retVal['tags'] = $this->item->getTags();
}
if(....) {
$retVal['...'] = $this->item->.....();
}
return $retVal;
}
}
/**
* DTO
*/
class Item {
public function __construct(ItemProperties $itemProps) {
$this->setItemProps($itemProps);
}
// If you prefer lazy loading here...maybe make it public
// and remove call from constructor.
private function setItemProps(&$itemProps) {
$properties = $itemProps->getProperties();
foreach($properties AS $propName => $propValue) {
$this->$propName = $propValue;
}
}
}
// Usage:
$itemProps = new ItemProperties($Item);
// set other properties if you need to...
$itemProps->isLogin = false;
$item = new Item($itemProps);
A user has a sponsor:
public function sponsor()
{
return $this->belongsTo(User::class, 'sponsor_id');
}
A user has referrals:
public function referrals()
{
return $this->hasMany(User::class, 'sponsor_id');
}
A user is considered capped when they have 2 or more referrals:
public function activeReferrals()
{
return $this->referrals()->whereActive(true);
}
public function isCapped()
{
return $this->activeReferrals()->count() >= 2;
}
A user can give points. By default, the sponsor will receive them, but if the sponsor is capped, I want the points to go to a sponsor's referral that is NOT capped. If all the referrals are capped, then it does the same thing with the level below (the referral's referrals).
If I go user by user making database calls for each one, it's gonna take a long time. How can I write a scope that makes recursive calls until it finds the first active referral in the tree that's not capped?
This is what I'm trying to do:
Please give this a try... I believe this will work for you :)
public function scopeNotCappedActiveReferrals($query, $count) {
return $query->withCount(['referrals' => function($q) {
$q->where('active', true);
}])->where('referrals_count', '<', $count);
}
For the second part...
// Finally you can call it with
public function allReferrals() {
$users = User::notCappedActiveReferrals(2)->get();
$allUsers = $this->findNotCappedActiveReferralsRecurrsively($users);
}
// Do not place this function in the model,
// place it in your Controller or Service or Repo or blahblah...
// Also, not tested... but should work :)
protected function findNotCappedActiveReferralsRecurrsively($users) {
if(!count($user)) {
return $users;
}
foreach($users as $user) {
$moreUsers = $user->notCappedActiveReferrals(2)->get();
return $users->merge($this->findNotCappedActiveReferralsRecurrsively($moreUsers));
}
}
Hope this is what you need :)
i have created new widget to display information in admin view. Final view must be same as CGridView, but with different logic for columns. Everything works fine, except when i try to call CButtonColumn column.
foreach ($this->columns as $column) {
if (is_array($column) && isset($column['class']) {
$this->renderColumnWidget($column);
}
}
/* ... */
protected function renderColumnWidget($column)
{
$widgetClass = $column->class;
unset($column->class);
if (strpos($widgetClass, '.') === false) {
$widgetClass = 'zii.widgets.grid.'.$widgetClass;
}
$this->widget($widgetClass, $column); // Error from here
}
So basically here i check if there is class attribute in column and call that widget. But i get error: CButtonColumn and its behaviors do not have a method or closure named "run".
What am i doing wrong? CButtonColumn don't have run method, and i don't want to extend this class.
You this as a function like this to initiate your columns
protected function initColumns(){
foreach($this->columns as $i=>$column) {
if(is_string($column))
$column=$this->createDataColumn($column);
else {
if(!isset($column['class']))
$column['class']='CDataColumn';
$column=Yii::createComponent($column, $this);
}
if($column->id===null)
$column->id=$id.'_c'.$i;
$this->columns[$i]=$column;
}
foreach($this->columns as $column)
$column->init();
}
I'm planning to have a function that will store the sql statement on the Cache using the given second parameter on remember() as the key and whenever the sql statement changes it will run against the database again and overwrite the stored sql, also the cached result, and if not it will take the default cached result by the remember() function.
So I am planning to have something like this on Illuminate\Database\Query\Builder
/**
* Execute the query based on the cached query
*
* #param array $columns
* #return array|static[]
*/
public function getCacheByQuery($columns = array('*'))
{
if ( ! is_null($this->cacheMinutes))
{
list($key, $minutes) = $this->getCacheInfo();
// if the stored sql is the same with the new one then get the cached
// if not, remove the cached query before calling the getCached
$oldSql = self::flag($key);
$newSql = $this->toSql().implode(',', $this->bindings);
if ($newSql!==$oldSql)
{
// remove the cache
\Cache::forget($key);
// update the stored sql
self::updateFlag($key, $newSql);
}
return $this->getCached($columns);
}
return $this->getFresh($columns);
}
public static function updateFlag($flag, $value)
{
$flags = \Cache::get(t().'databaseFlags', []);
$flags[$flag] = $value;
\Cache::put(t().'databaseFlags', $flags, USER_SESSION_EXPIRATION);
}
public static function flag($flag)
{
$flags = \Cache::get(t().'databaseFlags', []);
return #$flags[$flag] ?: false;
}
But the thing is, I don't want to put this directly on Illuminate\Database\Query\Builder since it is just my need for the current application I am working. I'm trying to extend Illuminate\Database\Query\Builder, but the problem is it does not detect the my extension class.
Call to undefined method Illuminate\Database\Query\Builder::getCachedByQuery()
My Extension Class
<?php namespace Lukaserat\Traits;
class QueryBuilder extends \Illuminate\Database\Query\Builder {
/**
* Execute the query based on the caced query
*
* #param array $columns
* #return array|static[]
*/
public function getCachedByQuery($columns = array('*'))
{
if ( ! is_null($this->cacheMinutes))
{
list($key, $minutes) = $this->getCacheInfo();
// if the stored sql is the same with the new one then get the cached
// if not, remove the cached query before calling the getCached
$oldSql = self::flag($key);
$newSql = $this->toSql().implode(',', $this->bindings);
if ($newSql!==$oldSql)
{
// remove the cache
\Cache::forget($key);
// update the stored sql
self::updateFlag($key, $newSql);
}
return $this->getCached($columns);
}
return $this->getFresh($columns);
}
public static function updateFlag($flag, $value)
{
$flags = \Cache::get(t().'databaseFlags', []);
$flags[$flag] = $value;
\Cache::put(t().'databaseFlags', $flags, USER_SESSION_EXPIRATION);
}
public static function flag($flag)
{
$flags = \Cache::get(t().'databaseFlags', []);
return #$flags[$flag] ?: false;
}
}
Implementing on..
<?php
use LaravelBook\Ardent\Ardent;
use Lukaserat\Traits\DataTable;
use Lukaserat\Traits\QueryBuilder as QueryBuilder;
use Illuminate\Support\MessageBag as MessageBag;
class ArdentBase extends Ardent implements InterfaceArdentBase{
use DataTable;
Am I missing something?
Is it correct that I overwrite the get() method on the Illuminate\Database\Query\Builder by renaming the function I made in my extension class from getCachedByQuery to get since I just extending the routine of the get.
I changed
public function getCachedByQuery($columns = array('*'))
to
public function get()
on my Lukaserat\Traits\QueryBuilder
and it is now working as I expected..
I have the following PHP code;
<?php
component_customer_init();
component_customer_go();
function component_customer_init()
{
$customer = Customer::getInstance();
$customer->set(1);
}
function component_customer_go()
{
$customer = Customer::getInstance();
$customer->get();
}
class Customer
{
public $id;
static $class = false;
static function getInstance()
{
if(self::$class == false)
{
self::$class = new Customer;
}
else
{
return self::$class;
}
}
public function set($id)
{
$this->id = $id;
}
public function get()
{
print $this->id;
}
}
?>
I get the following error;
Fatal error: Call to a member function set() on a non-object in /.../classes/customer.php on line 9
Can anyone tell me why I get this error? I know this code might look strange, but it's based on a component system that I'm writing for a CMS. The aim is to be able to replace HTML tags in the template e.g.;
<!-- component:customer-login -->
with;
<?php component_customer_login(); ?>
I also need to call pre-render methods of the "Customer" class to validate forms before output is made etc.
If anyone can think of a better way, please let me know but in the first instance, I'd like to know why I get the "Fatal error" mentioned above.
Well, I think your Customer::getInstance() method is flawed. It should look like this:
...
static function getInstance()
{
if(self::$class == false)
{
self::$class = new Customer;
return self::$class; // ADDED!!
}
else
{
return self::$class;
}
}
....
In the if(self::$class == false) branch you are creating the instance of the class, but you dont return it.
You could also rewrite it as such:
static function getInstance()
{
if(self::$class == false)
{
self::$class = new Customer;
}
return self::$class;
}
To make it a bit shorter.
DRY: Don't Repeat Yourself
static function getInstance()
{
if(self::$class == false)
{
self::$class = new Customer;
}
return self::$class;
}
And for Sinlgetons it is also important to prevent __clone() from being used. Making it private should solve that problem:
private function __clone() {}