[5.2] Add PassThroughTrait for middleware

[overtrue]

Let all the middleware supports exclude some URI.

[lucasmichot]

So maybe add an empty array property protected $except = []; ?

[overtrue]

http://php.net/manual/en/language.oop5.traits.php

If a trait defines a property then a class can not define a property with the same name, otherwise an error is issued. It is an E_STRICT if the class definition is compatible (same visibility and initial value) or fatal error otherwise.

Example #12 Conflict Resolution

<?php
trait PropertiesTrait {
    public $same = true;
    public $different = false;
}

class PropertiesExample {
    use PropertiesTrait;
    public $same = true; // Strict Standards
    public $different = true; // Fatal error
}
?>

[lucasmichot]

Sure @overtrue , maybe I misexplained.
The $except property should be moved from VerifyCsrfToken to PassThroughTrait

[crynobone]

@overtrue is right on this one, it just going to throw exception by defining the property in both place.

[lucasmichot]

👍 @overtrue
Would love to see this merged !

ATM I have to extend \Illuminate\Session\Middleware\StartSession in my app as I don't want session to be created for my api/* routes.

This trait would really ease up things

[lucasmichot]

I would also include it to the others middleware, so that we let this passthrough choice for the other ones, especially the \Illuminate\Session\Middleware\StartSession one ?

[overtrue]

Yes, I will do it.

[overtrue]

@lucasmichot Yes, almost all my middleware need the trait.

[overtrue]

@lucasmichot 😞

[lucasmichot]

Indeed @overtrue

Is there something we can do for that - maybe do it a different way - let us know @taylorotwell ?
This PR would really have lots of value