Dynamic class and dependency injection question: Argument 1 passed... blah blah

posted 10 years ago

I've read the docs, all sorts of web pages, and every kind of answer/question I could find but still not finding a solution to my problem. I have a Manager object that needs to retrieve data from the database, then depending on the data, instantiate a new class dynamically:

$workflow = new $class;
$workflow->process($id);

An example would be calling a NfN class that extends my WorkFlow abstract class and requires dependency injection:

class NotesFromNature extends WorkFlow
{
    public function __construct(ExpeditionInterface $expedition)
    {
        $this->expedition = $expedition;
    }

    public process($id)
    {
       // .......
    }
}

Is it possible to bind this in my service provider so it does not throw a missing argument error when calling "new $class" ?

$app->bind('Biospex\Services\WorkFlow\NotesFromNature', function($app)
{
    return new NotesFromNature( ?? ExpeditionInterface?? );
});

because I've tried various variations on the above and can't get anything to work.

Last updated 3 years ago.

rbruhn

replied 10 years ago

Solution

Was able to figure it out. In the Manager class, I called:

 $workflow= App::make($class);

I did not need to set a binding in the service provider.

Last updated 3 years ago.

socieboy

replied 9 years ago

Can you help me with that? I try to do that pretty much the same thing... but... I want to Inject in Laravel 5.2 a dinamyc FormRequest

my code is to update a resource in the database but i want to validate depending of the uri...

// so instead of use Request i think i could use somethign like function update({$this->getClass()} $request, $space, $form)...


public function update(Request $request, $space, $form)
    {
        // $form is a slug of one record in my database, based on this variable i want to determinate which request i have to load dinamyc...
    }

Do you see what i try to do?

Last updated 9 years ago.

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