<?php use Faker\Generator as Faker; use Illuminate\Support\Facades\DB; $db = DB::getMongoDB(); $factory->define(App\Foods::class, function (Faker $faker) use ($db) { return [ 'name' => $db->food->aggregate([ ['$sample' => [ 'size' => 1 ]] ]), 'price' => $faker->randomNumber(3), 'description' => $faker->sentence(13) ]; });