Laravel Livewire error "must not be accessed before initialization"

Question

I try to using Livewire Binding Directly To Model Properties, and i get this error, Anyone help please ? Thank in advance.

Typed property App\Http\Livewire\V2\Settings\Locations::$country must not be accessed before initialization

 class Locations extends Component{
  public Country $country;
  use WithPagination;
  protected $rules = [
    'country.name' => 'required|min:100',
    'country.note' => 'required|min:100',
  ];

  public function SaveCountry(){
    $this->validate();
    $this->country->save();
    $this->reset();
    session()->flash('info','The country have been added successful.');
  }
 public function render(){
    return view('livewire.v2.settings.locations',[
        'countries' => Country::orderBy('order_num','desc')->paginate(10),
    ]);
  }
}

score 8 · Accepted Answer · answered Jun 25 '21 at 11:46

8

When you define the type of a variable in PHP, you need to provide it a default value.

If your component is creating a Country, you can set it to an empty Country in the mount function:

public function mount()
{
    $this->country = new Country();
}

Alternatively set the public Country $country to be an existing Country.

answered Jun 25 '21 at 11:46

Peppermintology

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It return with error validate country.name. Thanks – Koung Buntha Jun 25 '21 at 11:53
@KoungBuntha OK, so your validation has failed. – Peppermintology Jun 25 '21 at 11:55
Yes, But the wire:model="country.name" value was valued. – Koung Buntha Jun 25 '21 at 11:57

score 1 · Answer 2 · edited May 11 '23 at 01:36

1

If for some reason Livewire keeps giving you the must not be accessed before initialization, even though you're using mount() as a replacement to __construct(), better use the boot() method that occurs even prior to mount().

It worked for me.

I finally understood it here: https://laravel-livewire.com/docs/2.x/lifecycle-hooks#class-hooks

edited May 11 '23 at 01:36

starball

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answered May 11 '23 at 00:07

António Cabral

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https://meta.stackexchange.com/a/8259/997587 – starball May 11 '23 at 01:36

Laravel Livewire error "must not be accessed before initialization"

2 Answers2