public function run()
{
$faker = Faker::create();
$users = User::lists('id')->all();
$nodes = Node::lists('id')->all();
foreach (range(1, 50) as $index) {
factory(App\Topic::class)->create(['user_id' => $faker->randomElement($users), 'node_id' => $faker->randomElement($nodes)]);
factory(App\Topic::class, 'excellent')->create(['user_id' => $faker->randomElement($users), 'node_id' => $faker->randomElement($nodes)]);
}
}
