What's different code?
$this->userService->getUser();and
$this->di->get('userService')->getUser();I use it in controller.
When I testing controller use phpunit, works only the second variant.
$this->userService obtains a shared service which means it always returns the same instance. $this->di->get('userService') is creating a new instance every time it is called.
Yeah, that's clear that $this->userService always returns the same instance, but this instance is a part of $this but of DI. How does get method of injectable work? Does it create an instance right when it calls property? If yes than it should be no difference with $this->di->get(...) at the first call.
What we do is:
-
Create DI and define injections etc. $di->set('userService', array(.....)) We inject dependencies as properties.
-
$ctrl = new MyController(); $ctrl->setDI($di) (our $di)
- $ctrl->someMethod();
function someMethod() // of MyConroller { $this->userService->; and $this->di->get('userService')->
}
In this case, when we write $this->userService, shouldnt it create new instance? Yes, if we will write the smae $this->userService it's the same instance. So what is the difference between $this->userService and $this->di->get('userService') in this case?