Programmatically create a product using Craft Commerce 2?

Question

The docs for v1 mention a method craft()->commerce_purchasables->saveElement().

This is omitted in the docs for v2. Does anyone know how I can create a product programmatically in PHP?

    $product = new Product();
        $product->title = "Test Product 1";
        $product->typeId = 2;
        $product->enabled = true;
        $product->promotable = true;

    $variant = new Variant();
            $variant->isDefault = true;

    $product->setVariants([$variant]);

    Craft::$app->getElements()->saveElement($product);

With the above code I get the following error:

Call to a member function getProductTypes() on null

I know the typeId is correct, because I can output it on a product template with {{ product.typeId }}

Answer 1

You probably have it figured by now, but for anyone wondering, here's a complete working example.

use craft\commerce\elements\Product;
use craft\commerce\elements\Variant;

// Create product
$product = new Product();
$product->title = 'Hello world';
$product->typeId = 2;
$product->enabled = true;

// Create variant
$variant = new Variant();
$variant->title = 'hey';
$variant->sku = 'hey';
$variant->price = 123;
$variant->stock = 5;

// Save product with variant
$product->setVariants([$variant]);
Craft::$app->elements->saveElement($product);

Answer 2

1. Populate a product model ($product)
2. Populate an array of variant models ($variants)
3. $product->setVariants($variants);
4. Craft::$app->getElements()->saveElement($product);

If step 4 returns false, validation errors occurred on the variants or product, and the errors be on the $product.