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我有2個表稱爲產品和顏色 產品屬於Toomany顏色和顏色belongsToMany產品使用多對多關係 現在我試圖在單個產品中添加更多顏色並檢查顏色名頭,如果它不存在不是創建新的,這裏是我的代碼Laravel FirstorNew()/ FirstorCreate()關係錯誤
public function addproductdetailspost(Request $request, $product){
$color_name = $request->color;
$product = product::where('slug', $product)->firstorfail();
$color = color::where('name', $color_name)->firstOrNew();
$color->name = $color_name;
$color->save();
$product_id = $product->id;
dd($product_id);
$color_id = $color->id;
$color->products()->attach($product_id);
return Redirect::back()->with('status', 'Post Success');
}
,但現在我得到這個錯誤
Type error: Too few arguments to function Illuminate\Database\Eloquent\Builder::firstOrNew()
謝謝