Call to a member function diff() on string on laravel

Question

On my Controller I have the code:

public function receita(Request $request){
    $id = $request['id'];
    $marcacao = Marcacao::find($id);

    $produtos = ProdutoUnidade::where('unidade_id', $marcacao->agenda->vinculo->unidade->id)
                              ->get();

    $vencimento = new DateTime(date("y-m-d"));
    $vencimento->add(new DateInterval('P90D'));
    $vencimento = $vencimento->format('y-m-d');

    return view('agendas.receita', compact('marcacao', 'produtos', 'vencimento'));
}

In my blade, I have:

@foreach($produtos as $produto)
    <option value="{{$produto->id}}">
        {{$vencimento->diff($produto->produtoNota->dataValidade) > 60 ? '0' : '1'}}
    </option>
@endforeach

I want to know if the difference of $vencimento and $produto->produtoNota->dataValidade is bigger than 60, but I am receive the error:

Call to a member function diff() on string

Any help?

Bostjan · Accepted Answer · 2018-09-16 19:32:08Z

1

In your controller you cast DateTime to string with $vencimento = $vencimento->format('y-m-d'); then pass this variable to the view.

So you are calling ->diff on a string. Pass DateTime object to view and format it there if you need to output formated datetime.

P.S. I suggest using carbon instead.

answered Sep 16, 2018 at 19:32

Bostjan

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3 Comments

Italo Rodrigo Over a year ago

I comment the line $vencimento = $vencimento->format('y-m-d'); and generate other error: DateTime::diff() expects parameter 1 to be DateTimeInterface, string given

Italo Rodrigo Over a year ago

How to use carbon?

Bostjan Over a year ago

I assume you do not cast dates from database to carbon object. See laravel.com/docs/5.7/eloquent-mutators#date-mutators

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