Laravel 4 - JSON data and an Undefined Method

Question

I am trying to select the last element from some JSON data but am getting an "Undefined Method" return. My code is to get the $order_serialized data from a specific Order and then to pick the $last_item in that JSON data and plug it into a dd() just for testing right now. If anyone could point out or explain where I went wrong it would be very much appreciated! Thank you so very much!

Controller:

public function getEdit($id){
    $order = Order::where('id', '=', $id);

    if($order->count()) {
        $order          = $order->first();
        $order_serialized   = json_decode($order->order_serialized);
        $last_item          = $order_serialized->last();


                    dd($last_item);


        foreach($order->order_serialized as $key => $value){
            $order->$key = $value;
        }
        return View::make('orders.edit')
                ->with('order', $order);
                /*->with('last_item', $last_item);*/
    }   else {
        return App::abort(404);
    }
}

I am getting " undefined method stdClass::last() " on line 101. — mario
– mario, Commented Mar 25, 2014 at 16:13

Brian Glaz · Accepted Answer · 2014-03-25 15:47:03Z

1

When you do

$order_serialized = json_decode($order->order_serialized);

You get back a standard class object, so it doesn't have any last() method.

I would do this instead:

$order_serialized   = json_decode($order->order_serialized, true);
$last_item = array_pop($order_serialized);

Sending true as the second param to json_decode will give you an array instead of an object.

answered Mar 25, 2014 at 15:47

Brian Glaz

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Comments

Kryten · Accepted Answer · 2014-03-25 15:46:18Z

1

json_decode is going to return a stdClass object which does not have any methods, so calling $order_serialized->last() is giving you the "undefined method" error. In order to call the last method on some class, you're going to have to instantiate that class. I don't know of a way to decode JSON to a specific class in PHP.

answered Mar 25, 2014 at 15:46

Kryten

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1 Comment

mario Over a year ago

Thank you for explaining where I went wrong. Knowing what the problem is is a great place to start fixing it!

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