Let's say you have migrated a products table with the following schema:

Schema::create('products', function (Blueprint $table) {
    $table->id();
    $table->string('name');
    $table->string('address');
    $table->string('slug')->unique();
    $table->text('description')->nullable();
    $table->unsignedDecimal('price', 14, 2);
    $table->unsignedInteger('stock');
    $table->boolean('on_sale')->default(false);
    $table->json('features');
    $table->dateTime('published_at');
    $table->timestamp('expire_at');
    $table->date('released_on');
    $table->time('sale_time');
    $table->enum('status', ['draft', 'published']);
    $table->foreignId('category_id')->nullable()->constrained()->nullOnDelete();
    $table->year('manufactured_year');
    $table->timestamps();
    $table->softDeletes();
});

Generating for a whole table

Now you can run any available generator for the table:

php artisan generate:factory products

The generator will inspect your schema and output relevant code using all your table columns:

Schema-based factory for table "products" have been generated!
Copy & paste these to your factory class:
<?php

namespace Database\Factories;

use Illuminate\Database\Eloquent\Factories\Factory;

/**
 * @extends \Illuminate\Database\Eloquent\Factories\Factory<\App\Models\Product>
 */
class ProductFactory extends Factory
{
    /**
     * Define the model's default state.
     *
     * @return array<string, mixed>
     */
    public function definition(): array
    {
        return [
            'name' => fake()->text(fake()->numberBetween(5, 255)),
            'address' => fake()->address(),
            'slug' => fake()->unique()->slug(),
            'description' => fake()->optional()->sentences(3, true),
            'price' => fake()->randomFloat(2, 0, 999999999999),
            'stock' => fake()->numberBetween(0, 4294967295),
            'on_sale' => fake()->boolean(),
            'features' => fake()->words(),
            'published_at' => fake()->dateTime()?->format('Y-m-d H:i'),
            'expire_at' => fake()->dateTime()?->format('Y-m-d H:i'),
            'released_on' => fake()->date(),
            'sale_time' => fake()->time(),
            'status' => fake()->randomElement(['draft', 'published']),
            'manufactured_year' => fake()->year(2100),
        ];
    }

    public function withCategory(): ProductFactory
    {
        return $this->state(function (array $attributes) {
            return [
                'category_id' => fake()->passThrough(random_id_or_generate(\App\Models\Category::class, 'id', generate: true)),
            ];
        });
    }
}

Generating for specific columns

If you want to generate code using only a subset of your table's columns, you can use the --columns option to specify the columns:

php artisan generate:factory products --columns name,address

Now the code will be generated only using those columns:

Schema-based factory for table "products" have been generated!
Copy & paste these to your factory class:
<?php

namespace Database\Factories;

use Illuminate\Database\Eloquent\Factories\Factory;

/**
 * @extends \Illuminate\Database\Eloquent\Factories\Factory<\App\Models\Product>
 */
class ProductFactory extends Factory
{
    /**
     * Define the model's default state.
     *
     * @return array<string, mixed>
     */
    public function definition(): array
    {
        return [
            'name' => fake()->text(fake()->numberBetween(5, 255)),
            'address' => fake()->address(),
        ];
    }
}

Generate files instead of outputting code

By default, all generators will output the generated code to the console. You can add a --create or -c flag, which will create or append to the relevant files for you.

php artisan generate:factory products --create

When using the --create flag, if any of the generated files already exists, the generator will refuse to overwrite the file. To force an overwrite, you can use the --force or -f flag.

php artisan generate:factory products --create --force

By default, the generator will figure out the relevant directory to put the generated file. If you want the files to be generated in a custom directory, you can use the --path option to specify a custom path relative to your project root.

php artisan generate:factory products --create --path database\\seeders

Always skip columns

To always skip columns add it in the config file, under skip_columns parameter.

'skip_columns' => ['whatever', 'some_other_column'],