Hi folks, DonCallisto here. In this article we’ll see why I personally don’t like status flags and how to handle them in a more elegant way. We’ll find out code written without flags which is semantically better and convey business…
That’s tricky! Let’s assume we have two arrays like these:
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class Foo { public $bar; public $flag; public function __construct(string $bar, bool $flag) { $this->bar = $bar; $this->flag = $flag; } public function __toString(): string { return $this->bar; } } $array1 = [ new Foo('test', true), ]; $array2 = [ new Foo('test', false), ]; |
Looking at these few lines I would expect that those two arrays are different but if we compare them with php array_diff function they’re the same:
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var_dump(array_diff($array1, $array2)); array(0) { } |
This happens…
The problem When a software handles multiple concurrent operations an entire class of problems arises. In our case multiple requests would try to update centralized information leading to unique constraint violations at the database level. That was because the code…
Il Page Object è un pattern utilizzato nei functional test per astrarre l’interazione con gli elementi della UI. All’interno di un oggetto vengono incapsulate le interazioni e le funzionalità di una pagina web che vengono esposte tramite api, nascondendo la…
Symfony form is a standalone component you can use to save a lot of time when developing an application that needs forms to interact with users (checkout my talk and slides from SfDayIt 2016 in Rome) As every powerful component/library/extension, power…
Suppose that we have a value object or, more in general, an object where its data has been set in the constructor
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class Foo { protected $bar; protected $foobar; public function construct($bar, $foobar) { // .... } } |
and its FormType
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class FooType extends AbstractType { public function buildForm(FormBuilderInterface $builder, array $options) { $builder ->add('bar') ->add('foobar'); } // ... } |
Let’s assume that bar and foobar are taken from HTTP POST values (so, basically, we need those values to be posted…
What this code does?
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class DateTimeInterval { private $from; private $to; private $allDayLong; public function setFrom(\DateTime $from) { if ($this->isAllDayLong()) { $from->setTime(0, 0, 0); } $this->from = $from; return $this; } public function getFrom() { ... } // omitted public function setTo(\DateTime $to) { if ($this->isAllDayLong()) { $to->setTime(23, 59, 59); } $this->to = $to; return $this; } public function getTo() { ... } // omitted public function allDayLong() { $this->allDayLong = true; } public function isAllDayLong() { return $this->allDayLong; } } |
It’s a simple class that represent a DateTimeInterval with a flag named allDayLong that let an object of DateTimeInterval class to fill all day. You can see that setFrom and setTo are affected from allDayLong flag: if is set, time of…
Just a quick tip for assets versioning with Symfony2. Let’s imagine you have an asset, called “beautifulAsset.js”, in your app. As soon as it’s requested, the user browser caches it. So far so good. Problems arise when you change the…
