i'm working on a Laravel/Livewire project

there are some products and services in this platform that user can order them.

the price of these products and services are changeable by their attributes . like size,color,quality and....

and i made a Many To Many relation between products and attributes.

but a can't handle it in my view where user should select that attributes before ordering

and my for each loop return wrong data . and i get this error :

Trying to get property 'pivot' of non-object .

my migration :

 public function up()
    {
        Schema::create('attr_product', function (Blueprint $table) {

            $table->foreignId('attr_id')->constrained();
            $table->foreignId('product_id')->constrained();
            $table->string('value')->nullable();
            $table->string('price')->nullable();
            $table->timestamps();
        });
    }

product model :

public function attr(){

        return $this->belongsToMany(Attr::class)->withPivot(['value','price'])->withTimestamps();
    }

attr model:

public function product(){

        return $this->belongsToMany(Product::class)->withPivot(['value','price'])->withTimestamps();
    }

my controller :

 class SingleProduct extends Component
{
    public $product;

    public function mount($id){
        $this->product=Product::with('attr')->findOrFail($id);
    }

    public function render()
    {
        return view('livewire.front.product.single-product')->extends('layouts.Default')->section('content');
    }
}

my loop in blade :

  @foreach($product->attr as $attr)
                                <div >
                                    <h6 >{{$attr->title}}</h6>
                                    <select >
                                         @foreach($attr as $av)
                                        <option value="{{$av->pivot->price}}">{{$av->pivot->value}}</option>
                                        @endforeach
                                    </select>
                                </div>
                 


 @endforeach

CodePudding user response：

before @foreach add

@php
dd($product)
@endphp

You can troubleshoot your $product Model and relations

CodePudding user response：

The right syntax for withPivot should be parameters separated by comma, try this:

product model

public function attr(){

        return $this->belongsToMany(Attr::class)
               ->withPivot('value','price')
               ->withTimestamps();
    }

attr model:

public function product(){

        return $this->belongsToMany(Product::class)
               ->withPivot('value','price')
               ->withTimestamps();
    }