How to insert array data in laravel 5.4 - development

How to insert array data in laravel 5.4

I have a product table and device table.
I have joined these two tables where I have selected device.id & product.name, now I want to insert this data into my existing device table using device.id.
I want to insert multiple dropdown values in my database. Can anyone tell me how can I solve this problem? Below is my Controller Code-

foreach ($request->all() as $value)
        {
$deviceById= Device::find($request->id);
            if($request->destination_type == 'dealer')
            {
                $deviceById->destination_location=$value->dealer_id;
            }else
            {
                $deviceById->destination_location=$value->office_id;
            }
            $deviceById->save();
        }
        flash('Device Dispatch added successfully!')->success()->important();
        return redirect()->back();

from Laravel Questions and Answers https://laravelquestions.com/laravel/how-to-insert-array-data-in-laravel-5-4/
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