syncPermissions() doesn't work in my application

[KaikSilva]

I'm making an application in laravel .... where I use syncPermissions() to insert the conditions, but syncPermissions() doesn't do the insert into the database...

the code :

public function permissionsSync(Request $request, $role)
{
$permissionsRequest = $request->except(['_token', '_method']); //here I separate what I will use

    foreach($permissionsRequest as $key => $value) {
    $permissions[] = Permission::where('id', $key)->first(); //here I get the requested permissions from the database
    }

    $role = Role::where('id', $role)->first(); //Here I get the Role where the permissions will be assigned

    if(!empty($permissions)){ //here valid if it is empty

        $role->syncPermissions($permissions); //It would be Here where I do the insert

    } else {

        $role->syncPermissions(null);

    }

return redirect()->route('admin.role.permissions', ['role' => $role->id]); //I redirect the screen
}

I've already done the debug and all variables are filled as expected... Thanks!

[erikn69]

Any exception?

Why? $permissions[] = Permission::where('id', $key)->first();
Why send unused value on post $value($key => $value)

Better

$permissions =Permission::whereIn('id',  array_keys($permissionsRequest))->get();

Even better just

$permissions = array_keys($permissionsRequest);