Laravel Syncwithoutdetaching

Laravel syncWithoutDetaching method is used to keep existing relationships in the pivot table when syncing a new relationship.

Syntax

The syntax of syncWithoutDetaching method is as follows:

public function syncWithoutDetaching($id, $attributes = [], $detaching = true);

Parameters

The parameters that can be passed to this method are:

• $id - the id of the relationship you want to sync.
• $attributes - an array of additional attributes you want to set on the pivot table.
• $detaching - controls whether or not existing relationships should be detached from the pivot table.

Usage

An example of how to use syncWithoutDetaching method is as follows:

$user = User::find(1);
$user->roles()->syncWithoutDetaching([1, 2, 3], ['is_default' => true]);

In the above example, the user with id 1 is attached to the roles with ids 1, 2 and 3 without detaching any existing relationships. Additionally, the is_default attribute is set to true for each of these relationships.

Conclusion

In conclusion, Laravel syncWithoutDetaching is a very useful method when working with pivot tables in Laravel. By using this method, you can ensure that existing relationships are not detached when syncing new relationships to a pivot table.