public function update($id)
 {
     $rules = array('code' => 'required', 'name' => 'required', 'price' => array('required', 'regex:/^\\d*(\\.\\d{2})?$/'), 'categories' => 'required', 'product_image' => 'mimes:jpeg,bmp,png');
     $validator = Validator::make(Input::all(), $rules);
     // process the login
     if ($validator->fails()) {
         return Redirect::to('admin/product/' . $id . '/edit')->withErrors($validator)->withInput();
     } else {
         // store
         $filename = "";
         if (Input::hasFile('product_image')) {
             if (Input::file('product_image')->isValid()) {
                 Input::file('product_image')->move(ProductController::imagePath());
                 $filename = Input::file('product_image')->getClientOriginalName();
             }
         }
         Product::where('code', '=', $id)->update(['code' => Input::get('code')]);
         Product::where('code', '=', $id)->update(['name' => Input::get('name')]);
         if ($filename !== "") {
             Product::where('code', '=', $id)->update(['image' => ProductController::imagePath() . $filename]);
         }
         Product::where('code', '=', $id)->update(['price' => Input::get('price')]);
         $product = Product::where('code', '=', $id)->firstOrFail();
         foreach (Category::all() as $cat) {
             DB::table('products_category')->where('product_id', '=', $product->code)->where('category_id', '=', $cat->id)->softDeletes();
         }
         foreach (Input::get('categories') as $catId) {
             DB::table('products_category')->insert(array('product_id' => $product->code, 'category_id' => $catId));
         }
         // redirect
         Session::flash('message', 'Successfully updated product!');
         return Redirect::to('admin/product');
     }
 }
                        <th>Name</th>
                        <th>Price</th>
                        <th>Image</th>
                        <th>Categories</th>
                        <th>Actions</th>
                    </tr>
                </thead>
                <tbody>
                    @foreach($products as $product)
                    <tr>
                        <td>{{$product->code}}</td>
                        <td>{{$product->mark()->getResults()->name}}</td>
                        <td>{{$product->name}}</td>
                        <td>{{$product->price}}</td>
                        <?php 
$image = str_replace(ProductController::imagePath(), "", $product->image);
?>
                        <td><img src="{{asset('/web/images/product/phpOP4Umz')}}" style="width: 50px; height: 50px;"/></td>
                        <td>
                            <?php 
$count = 0;
foreach ($product->categories()->getResults() as $category) {
    if ($count < count($product->categories()->get()) - 1) {
        echo $category->name . ', ';
    } else {
        echo $category->name;
    }
    $count++;
}
?>
                        </td>