如何在Laravel视图中调用类方法？

Question

I'm trying to find a way to call a method from within my class file inside a blade file. foo() uses the $item variable from the foreach loop. Since I'm looping inside the blade file, I'm unable, or rather, it's bad practise, to call a controller method inside a view, or so I've heard.

MyController

public function getData() {
  $data = DB::paginate(10);
  return view('view', ['data' => $data]);
}

public function foo($var) {
 //do something with $var
 return $var
}

view.blade.php

@foreach ($data as $item)

 <td>{{$item->key}}</td>
 <td>{{ //myController::foo($item) is Essentially the output I need }} </td>

@endforeach

Since $item is generated in the foreach (which is inside the view), I don't know how to call method before it's past to the view in the return statement.

Any suggestions?

Answer 1

Just share your controller with your view:

Controller:

public function getData() {
    $data = DB::paginate(10);

    return view('view', [
        'data' => $data, 
        'controller' => $this,
    ]);
}

View:

@foreach ($data as $item)

 <td>{{$item->key}}</td>
 <td>{{ $controller->foo($item) }} </td>

@endforeach

The better way would be to generate the output in the controller:

public function getData() {
    $data = DB::paginate(10);

    $data = array_map(function($item) {
        $item->output = $this->foo($item);

        return $item;
    }, $data);

    return view('view', [
        'data' => $data,
    ]);
}