Save Many to Many Laravel 5.3?

Question

Laravel

There is a Pivot table, where the product id and tag id.
controller:

$tagsNames = ['1', '2', '3'];
  $product->productTags->saveMany([
      new Tag(['tag_id' => '1']),
      new Tag(['tag_id' => '2']),
      new Tag(['tag_id' => '3']),
    ]);

Model:

public function productTags()
    {
        return $this->belongsToMany('App\Tag', 'product_tags');
    }
// тоже самое только наоборот в модели Tag

Method saveMany does not exist.
Tried sync method doesn't exist either.

Answer 1

at least
$product->productTags != $product->productTags()

Answer 2

Maybe try attach together with saveMany?

Answer 3

$product->productTags()->saveMany()