On 03/08/2020 04:31, 3u93n3 wrote:
The main idea is to take control over objects creation and injecting
dependencies.
Hi 3u93n3,
Thank you for the effort. However, it is generally accepted that this
kind of functionality belongs to userland rather than the core.
There are a few issues with this proposal:
1. It depends on global state (register_dependency_bindings) which is
something we aim to avoid as in the vast majority of cases it leads to
unfortunate outcomes and difficulty in maintaining code.
2. It introduces more language magic, and sentiment is generally against
more magic.
Most of all though, this problem has already been solved in userland by
instantiating objects via factories - no magic involved, just static code.
With (presumably) 8.0 and the introduction of attributes, existing
dependency injection frameworks will have additional methods of cleanly
expressing which constructor fields are injected, and which are user
supplied.
We might even expect that these frameworks will be updated to take
advantage of this and include automatically generated factories:
#[Service]
class Foo {
public function __construct(
#[Inject] Foo $foo,
#[Inject] Bar $bar,
string $value
) {
...
}
}
$container->factories(Foo::class)("value");
Mark Randall
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