How method injection works in Laravel 5(I mean implementation), can I inject parameters in custom method, not just in controller actions?
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3 Answers
1) Read this articles to know more about method injection in laravel 5
http://mattstauffer.co/blog/laravel-5.0-method-injection
https://laracasts.com/series/whats-new-in-laravel-5/episodes/2
2) Here is simple implementation of method injection
$parameters = [];
$reflector = new ReflectionFunction('myTestFunction');
foreach ($reflector->getParameters() as $key => $parameter) {
$class = $parameter->getClass();
if ($class) {
$parameters[$key] = App::make($class->name);
} else {
$parameters[$key] = null;
}
}
call_user_func_array('myTestFunction', $parameters);
you can also look at function
public function call($callback, array $parameters = [], $defaultMethod = null)
in https://github.com/laravel/framework/blob/master/src/Illuminate/Container/Container.php file for more details
3) You can use method injection for custom method
App::call('\App\Http\Controllers\Api\myTestFunction');
or for methods
App::call([$object, 'myTestMethod']);
Comments
Here is simple example of method injection,which we often used in laravel.eg
public function show(Request $request,$id){
$record = $request->find($id);
dd($record);
}
-Here we inject object of Request type,and we can inject model class object etc.
Or General Example:
class A{}
class B{
function abc(A $obj){}
}
-so function abc of class B will accept object of Class A.
like:
$obj = new A();
$obj2 = new B();
$obj2->abc($obj);
Comments
Here is one more example in php 7+
class Foo {
public function bar(Baz $baz)
{
$this->custom(...$baz);
}
protected function custom(Baz $baz, Baz2 $baz2, Baz3 $baz3)
{
return $baz3;
}
}
