Laravel - Seeding Many-to-Many Relationship

You can use attach() or sync() method on a many-to-many relationship.

There are multiple ways you can approach this. Here one of them:

// Populate rolesfactory(App\Role::class, 20)->create();// Populate usersfactory(App\User::class, 50)->create();// Get all the roles attaching up to 3 random roles to each user$roles = App\Role::all();// Populate the pivot tableApp\User::all()->each(function ($user) use ($roles) {     $user->roles()->attach(        $roles->random(rand(1, 3))->pluck('id')->toArray()    ); });

Another way is to use saveMany() function

public function run(){   factory(App\User::class,3)->create();   $roles = factory(App\Role::class,3)->create();   App\User::All()->each(function ($user) use ($roles){      $user->roles()->saveMany($roles);   });}

Just for a seeder you can use something like this:

   for ($i = 0; $i < 50; $i++) {        $user = factory(App\User::class)->create();        $role = factory(App\Role::class)->create();        DB::table('role_user')->insert([            'user_id' => $user->id,            'role_id' => $role->id        ]);    }

But normally you need to define relation like has many through https://laravel.com/docs/5.4/eloquent-relationships#has-many-through

Then you will be able to use:

$user->roles()->save($role);