Laravel Factories and Seeding: Static array of arrays

For some of my tables, I’d like to insert a fixed amount of rows with specific data.

This is my categories factory:

$factory->define(Category::class, function (Faker $faker) {
    return [
        [
            'name' => 'Politics',
            'slug' => 'politics',
            'description' => 'To discuss politics'
        ],
        [
            'name' => 'News and Events',
            'slug' => 'news',
            'description' => 'To discuss news and world events'
        ],
        [
            'name' => 'Food and Cooking',
            'slug' => 'cooking',
            'description' => 'To discuss cooking and food'
        ],
        [
            'name' => "Animals and Nature",
            'slug' => 'animals-nature',
            'description' => 'To discuss politics'
        ]
    ];
});

This is the seeder:

public function run() {
   factory(AppCategory::class, 1)->create();
}

I get this error: preg_match() expects parameter 2 to be string, array given

Is there a way to insert a fixed amount of static information into certain tables using seeding and factories?

Answer

I think you want to use Seeder with static values, if I am correct you should use

Define Category seeder

<?php
use IlluminateDatabaseSeeder;
use AppCategory;

class CategorySeeder extends Seeder
{
    /**
     * Run the database seeds.
     *
     * @return void
     */
    public function run()
    {
        $categories = [
             [
            'name' => 'Politics',
            'slug' => 'politics',
            'description' => 'To discuss politics'
        ],
        [
            'name' => 'News and Events',
            'slug' => 'news',
            'description' => 'To discuss news and world events'
        ],
        [
            'name' => 'Food and Cooking',
            'slug' => 'cooking',
            'description' => 'To discuss cooking and food'
        ],
        [
            'name' => "Animals and Nature",
            'slug' => 'animals-nature',
            'description' => 'To discuss politics'
        ]
        ];

        foreach ($categories as $category) {
            Category::create($category);
        }
    }
}

And in DatabaseSeeder

<?php

use IlluminateDatabaseSeeder;

class DatabaseSeeder extends Seeder
{
    /**
     * Seed the application's database.
     *
     * @return void
     */
    public function run()
    {
        $this->call(CategorySeeder::class);
    }
}

Now run php artisan db:seed and it will be done.