Multiple images update laravel

I have two tables which are related one is product table and products_photos table. In products_photos table there is "id","product_id" and "filename" columns.I'm trying to edit multiple images when editing a product, the problem is I'm getting an error Method Illuminate\Http\Request::photos does not exist.. How can I edit multiple images?

Code.

This is how I create multiple images

  public function store(Request $request) 
  { 
    foreach ($request->photos as $photo) {
        $filename = $photo->store('public/photos');
        ProductsPhoto::create([
            'product_id' => $product->id,
            'filename' => $filename
        ]);
    } 
    return redirect()->back(); 
 }

This is how I edit multiple images

 $image = Product::with('ProductsPhoto')->where('id',$request->product_id)->first();

   if($request->photos('photos')) {

    if(file_exists($image ->photos)){
        unlink($image ->photos);
    }
    $filename = $photos->store('public/photos');
    ProductsPhoto::create([
        'product_id' => $product->id,
        'filename' => $filename
    ]);

} 
else{

    $image = $photos->store('public/photos');
}
     $product = Product::with('ProductsPhoto')->find($request->product_id);


     $product->filename = $product->ProductsPhoto[0]->filename;

     $product->save();
    }

Blade

   <input multiple="multiple" name="photos[]"  type="file"> 

Your help would be appreciated.

via Chebli Mohamed