Trying to access array offset on value of type null

Hi there i'm storing data in my db tables through forms inside a view. The view is about products which contain a brand and a model. Im storing in the products table the brand id and the model id, but what i want to show in my view is the brand name and not the id, and the same for the model.

						@foreach($file as $key => $product)
                            <tr>
                                <td style="display: none">{{ $key+1 }}</td>
                                <td>{{ $product['ptype']['productType']}}</td>
                                <td>{{ $product->brand_id}}</td>
                                <td>{{ $product->model_id}}</td>

When i show the productType it works fine but if i do:

       <td>{{ $product['brand']['brandName']}}</td>

i get the error: Trying to access array offset on value of type null

ProductController:

	public function add(){
    		$product['ptypes'] = Ptype::all();
    		$product['brands'] = Brand::all();
    		$product['models'] = ModelP::all();
    return view('backend.product.add-product', $product);
}

public function store(Request $request){
    
    $product = new Product();
    if($request->file('file')){
        $file = $request->file('file');
        $filename = time().'.'.$file->getClientOriginalName();
        $request->file->move('storage/', $filename);
        $product->file = $filename;
    }
    
    $product->ptype_id = $request->ptype_id;
    $product->brand_id = $request->brand_id;
    $product->model_id = $request->model_id;
    $product->description = $request->description;
    $product->fob = $request->fob;
    $product->sale_price = $request->sale_price;
    $product->buy_coin = $request->buy_coin;
    $product->sale_coin = $request->sale_coin;
    $product->quantity = '0';
    $product->created_by = Auth::user()->id;
    $product->save();
    Session::flash('success');
    return redirect()->route('products.view');
}

I've never seen a view error like this, and i dont have a clue how to fix it. I've look for similar questions in other forums but i still can't solve it.

automica

4 years ago

Level 54

if your product has a brand relationship and its always present then you can do:

  <td>{{ $product->brand->brandName ]}}</td>

if its optional than the following with a check for the brand_id and display the name or a null

  <td>{{ $product->brand_id ? $product->brand->brandName : null ]}}</td>

mateog98

4 years ago

Level 1

i tried doing

and now i get a similar error:

Trying to get property 'brandName' of non-object

automica

4 years ago

Level 54

{{ $product->brand->brandName ]}

will only work if all your products have a brand_id and you have a relationship set in your Product model for brand

{{ $product->brand_id ? $product->brand->brandName : null ]}}

will check first.

mateog98

4 years ago

Level 1

This is my Product model:

  class Product extends Model
{
   public function category(){
      return $this->belongsTo(Category::class,'category_id','id'); 
 }


public function ptype(){
    return $this->belongsTo(Ptype::class,'ptype_id','id'); 
}

public function marca(){
    return $this->belongsTo(Brand::class, 'brand_id', 'id'); 
}

}