Laravel9和Livewire2多個storeAs方法拋出“在null上呼叫成員函式storeAs()”錯誤-有解無憂

我有 6 張不同的圖片需要用戶上傳，所以我有 6 種不同的storeAs方法。當我只有一個時，一切正常，但有 2 個或更多時，我得到一個Call to a member function storeAs() on null錯誤。老實說，我的代碼看起來重復而骯臟，所以我并不感到驚訝。

public function createTentry($id)
{
    $trial = Trial::find($id);

    $image_plant_general = $this->image_plant_general->storeAs('/', $this->trial->id.'_'.$this->id.'_'.now()->timestamp.'.'.$this->image_plant_general->getClientOriginalExtension(), 'trial-entry-photos');
    $image_plant_closeup = $this->image_plant_closeup->storeAs('/', $this->trial->id.'_'.$this->id.'_'.now()->timestamp.'.'.$this->image_plant_closeup->getClientOriginalExtension(), 'trial-entry-photos');
    $image_fruit_in_plant = $this->image_fruit_in_plant->storeAs('/', $this->trial->id.'_'.$this->id.'_'.now()->timestamp.'.'.$this->image_fruit_in_plant->getClientOriginalExtension(), 'trial-entry-photos');
    $image_fruit_in_plant_closeup = $this->image_fruit_in_plant_closeup->storeAs('/', $this->trial->id.'_'.$this->id.'_'.now()->timestamp.'.'.$this->image_fruit_in_plant_closeup->getClientOriginalExtension(), 'trial-entry-photos');
    $image_fruit_in_harvest_single = $this->image_fruit_in_harvest_single->storeAs('/', $this->trial->id.'_'.$this->id.'_'.now()->timestamp.'.'.$this->image_fruit_in_harvest_single->getClientOriginalExtension(), 'trial-entry-photos');
    $image_fruit_in_harvest_group = $this->image_fruit_in_harvest_group->storeAs('/', $this->trial->id.'_'.$this->id.'_'.now()->timestamp.'.'.$this->image_fruit_in_harvest_group->getClientOriginalExtension(), 'trial-entry-photos');

    Tentry::create([
        ...
        'image_plant_general' => $image_plant_general,
        'image_plant_closeup' => $image_plant_closeup,
        'image_fruit_in_plant' => $image_fruit_in_plant,
        'image_fruit_in_plant_closeup' => $image_fruit_in_plant_closeup,
        'image_fruit_in_harvest_single' => $image_fruit_in_harvest_single,
        'image_fruit_in_harvest_group' => $image_fruit_in_harvest_group,

    ]);

    return redirect()->route('trial.show', [$trial->evaluation_id, $trial->id]);
}

uj5u.com熱心網友回復：

我建議您使用陣列和回圈，而不是檢查單個屬性。使代碼更簡潔，并且更容易一遍又一遍地檢查同一件事。

另一件事，我添加了model-route-binding，這樣Trial模型就可以直接作為引數注入，而無需顯式查找。

public function createTentry(Trial $trial)
{
    $prefix = $this->trial->id.'_'.$this->id.'_'.now()->timestamp.'.';

    $images = [
        'image_plant_general',
        'image_plant_closeup',
        'image_fruit_in_plant',
        'image_fruit_in_plant_closeup',
        'image_fruit_in_harvest_single',
        'image_fruit_in_harvest_group'
    ];

    $data = [
        // Other Tentry-fields here
    ];

    foreach ($images as $image) {
        $data[$image] = $this->{$image}
            ? $this->{$image}->storeAs('/', $prefix.$this->image_plant_general->getClientOriginalExtension(), 'trial-entry-photos')
            : null;
    }

    Tentry::create($data);

    return redirect()->route('trial.show', [$trial->evaluation_id, $trial->id]);
}

轉載請註明出處，本文鏈接：https://www.uj5u.com/qiye/485949.html

標籤：拉拉维尔 laravel-livewire

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