controller.php

 /**
     * Get the create view for a new subscription.
     *
     * @return \Illuminate\View\View
     */
    public function create(): View 
    {
        return view('subscriptions.create', ['products' => $this->productRepository->entity()->where('type', 'Eten')->get()]);
    }

    /**
     * Store the new subscription in the storage. 
     *
     * @param  TODO: Docblock validation
     * @return \Illuminate\Http\RedirectResponse
     */
    public function store(SubscriptionValidator $input): RedirectResponse
    {
        $order = $input->get('order');
       foreach($order as $key => $value) 
       {
            $arrData[] = array("productId"=>$order[$key], 'personen' => $order[$key]);
       }

       dd($arrData);

            die();

        if ($subscription = $this->subscriptionsRepository->create($input->except('_token'))) {
            flash("De inschrijving is toegevoegd in het systeem.")->success();

            // TODO: Send mail notification to the subscription user with his invoice. (queued)
            // TODO; Register activity logger when the form user is an admin, verantwoordelijke.
        } 

        return redirect()->route('inschrijvingen.index');
    }

database.txt

+----+-----------+-------------------+-------+------------+--------------------------+---------------------+---------------------+
| id | author_id | name              | price | type       | description              | created_at          | updated_at          |
+----+-----------+-------------------+-------+------------+--------------------------+---------------------+---------------------+
|  1 |         9 | Kari Turner       | 0     | Eten       | WHAT?'.                  | 2017-11-22 02:55:57 | 2017-11-22 02:55:57 |
|  8 |         1 | d<dfvsdf          | 20.00 | Eten       | dsfsqdfsqdf              | 2017-11-22 04:14:49 | 2017-11-22 04:14:49 |
+----+-----------+-------------------+-------+------------+--------------------------+---------------------+---------------------+

DD.txt

array:4 [▼
  0 => array:2 [▼
    "productId" => "1"
    "personen" => "1"
  ]
  1 => array:2 [▼
    "productId" => null
    "personen" => null
  ]
  2 => array:2 [▼
    "productId" => "8"
    "personen" => "8"
  ]
  3 => array:2 [▼
    "productId" => null
    "personen" => null
  ]
]

view.blade.php

@if (count($products) > 0)
                                <fieldset>
                                    <legend>Bestelling:</legend>

                                    <div class="alert alert-warning alert-important alert-dismissable fade in" role="alert">
                                        <a href="#" class="close" data-dismiss="alert" aria-label="close">&times;</a>

                                        <strong><i class="fa fa-warning"></i> Info:</strong>
                                        Bij het aantal personen word een getal verwacht. bv "2" en niet "2 personen."
                                    </div>

                                    @foreach ($products as $product)
                                        <div class="form-group">
                                            <label class="control-label col-md-3">{{ $product->name }}:</label>

                                            <div class="col-md-2">
                                                <label class="control-label">{{ $product->price }}€ per persoon</label>
                                            </div>

                                            <div class="col-md-2">
                                                <input type="hidden" @input('order[]', $product->id)>
                                                <input type="text" class="form-control" @input('order[][personen]') placeholder="Aantal Personen">
                                            </div>
                                        </div>
                                    @endforeach
                                </fieldset>
                            @endif