PHP: namespace and dependency injection (slim framework)

Asked Dec 15 '17 at 15:38

Active May 30 '18 at 17:45

Viewed 37 times

in dependencies, I add the authenticator class to the container:

$container['authenticator']=function ($c) {
    return new \App\Auth\LDAPAuthenticator(...);
};

But then when I try to use it from the class App\Model\Login it searches the App\Model path. How is this possible?

constructor of App\Model\Login:

namespace App\Model;
...

$this->authenticator = $c['authenticator'];

Method in App\Model\Login:

$result = $this->authenticator($args);

Error message:

"Call to undefined method App\\Model\\Login::authenticator()

Where it should have tried to call App\Auth\LDAPAuthenticator

some clarifications, 1) this works:

$authenticator = new \App\Auth\LDAPAuthenticator(...)

2) the LDAPAuthenticator class is callable as it has an __invoke method

edited May 30 '18 at 17:45

Cœur

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asked Dec 15 '17 at 15:38

sivann

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1

You don't have `authenticator` method in your class. You have `authenticator` property which holds a function. – u_mulder Dec 15 '17 at 15:41
`$this->authenticator($args);` this is wrong, you may want `$this->authenticator->authenticator($args);` – Edwin Dec 15 '17 at 15:41
the authenticator class has an __invoke method, so it's callable without specifying a method. If I call it directly without DI it works. – sivann Dec 15 '17 at 15:43
2

The syntax `$o->m()` says *call method `m` of `$o`*. But `m` here isn't a method of the class, it's an anonymous function stored as a property. The `$o->m()` syntax doesn't consider this. – deceze Dec 15 '17 at 15:44
@deceze, please read my comment. The class is callable. – sivann Dec 15 '17 at 15:45
So, it should be `($o->m)()` – u_mulder Dec 15 '17 at 15:45
@sivann "The class" meaning `App\Model\Login`…? – deceze Dec 15 '17 at 15:46
@deceze no, LDAPAuthenticator – sivann Dec 15 '17 at 15:46
Yeah, that doesn't matter. Did you see the duplicate? – deceze Dec 15 '17 at 15:47
@deceze, yes but I don't see how it is related. Calling the method directly works, it's obvious by the error that this is a namespace issue. – sivann Dec 15 '17 at 15:49
Just enclose in brackets, is it so __hard__ to do? `$result = ($this->authenticator)($args);` – u_mulder Dec 15 '17 at 15:50
@u_mulder It worked! Why? (please add an answer so I can accept) – sivann Dec 15 '17 at 15:51
__BECAUSE IT IS EXPLAINED IN A DUPE__ – u_mulder Dec 15 '17 at 15:52
1

…and in my comment above. – deceze Dec 15 '17 at 15:54
Thank you guys, the explanation in the dupe was too hard for me to see the relation. – sivann Dec 15 '17 at 15:55

PHP: namespace and dependency injection (slim framework)

0 Answers0