Undefined variable error exception in view

Question

Controller method

 public function create(Request $request )
{
   $client_id = $request->input('client_name');
   //$userid = \Auth::user()->id;
   $invoice_id = Invoice::create([
    //'userid'=>$userid,
    'clientid'=>$client_id,
    ])->id;

    return redirect('invoice/create/'.$invoice_id);
}

View Where I'm getting an error

  @if($invoice_product->product_qty!=null)
       value="{{$invoice_product->product_qty}}"
  @endif

Model

  namespace App;

 use Illuminate\Database\Eloquent\Model;

class InvoiceProducts extends Model
{
protected $fillable = ['invoice_id'];
}

and the error Undefined variable: invoice_product (View: C:\xampp\htdocs\cs\resources\views\invoice\create.blade.php)

Answer 1

Try using 'with'

return redirect('invoice/create/'.$invoice_id)->with($invoice_id);

Answer 2

It's not possible to inject variable into the view while redirecting!

there is two way for you to do that. first load view inside the create. and second get $client_id variable inside the invoice/create/ route controller. so you can inject your variables into your views when loading theme.

there is one important point. if the view is separated from a controller function then it should load it's own variables independently (inside the functions that load the view). otherwise it should be loaded inside of that controller.