vendor model and it's relationship

src/Model/Product.php

@@ -448,4 +448,19 @@ public function tags(): BelongsToMany
             'term_taxonomy_id'
         );
     }
+
+    /**
+     * Get the related vendors.
+     *
+     * @return BelongsToMany<Vendor>
+     */
+    public function vendor()
+    {
+        return $this->belongsToMany(
+            Vendor::class,
+            'term_relationships',
+            'object_id',
+            'term_taxonomy_id'
+        );
+    }
 }

src/Model/Vendor.php

@@ -0,0 +1,27 @@
+<?php
+
+namespace Corcel\WooCommerce\Model;
+
+use Corcel\Model\Taxonomy;
+use Database\Factories\VendorFactory;
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+
+/**
+ * @property-read string name
+ */
+class Vendor extends Taxonomy
+{
+    use HasFactory;
+
+    protected $taxonomy = 'wcpv_product_vendors';
+
+    /**
+     * Create a new factory instance for the model.
+     *
+     * @return VendorFactory
+     */
+    protected static function newFactory(): VendorFactory
+    {
+        return VendorFactory::new();
+    }
+}

tests/Unit/Model/ProductVendorTest.php

@@ -0,0 +1,39 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Tests\Unit\Model;
+
+use Corcel\WooCommerce\Model\Product;
+use Corcel\WooCommerce\Model\Vendor;
+use Database\Factories\TermFactory;
+use Illuminate\Support\Facades\DB;
+use Tests\TestCase;
+
+class ProductVendorTest extends TestCase
+{
+    public function testProductVendor(): void
+    {
+        $product = $this->createProduct();
+        $vendorName = 'vendor name';
+        $vendorTerm = (new TermFactory())->create(['name' => $vendorName]);
+        $vendorTax = Vendor::factory()->create(['term_id' => $vendorTerm->term_id]);
+
+        DB::table('term_relationships')->insert([
+            'object_id' => $product->ID,
+            'term_taxonomy_id' => $vendorTax->term_taxonomy_id,
+            'term_order' => 0,
+        ]);
+
+        $this->assertModelExists($product->vendor->first());
+        $this->assertSame($product->vendor->first()->name, $vendorName);
+    }
+
+    private function createProduct(): Product
+    {
+        /** @var Product */
+        $product = Product::factory()->create();
+
+        return $product;
+    }
+}

tests/database/factories/TermFactory.php

@@ -0,0 +1,29 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Database\Factories;
+
+use Corcel\Model\Term;
+use Corcel\WooCommerce\Model\Product;
+use Illuminate\Database\Eloquent\Factories\Factory;
+
+/**
+ * @extends Factory<Product>
+ */
+class TermFactory extends Factory
+{
+    protected $model = Term::class;
+
+    /**
+     * Define the model's default state.
+     *
+     * @return array<string, mixed>
+     */
+    public function definition()
+    {
+        return [
+            'name' => $this->faker->name
+        ];
+    }
+}

tests/database/factories/VendorFactory.php

@@ -0,0 +1,29 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Database\Factories;
+
+use Corcel\WooCommerce\Model\Product;
+use Corcel\WooCommerce\Model\Vendor;
+use Illuminate\Database\Eloquent\Factories\Factory;
+/**
+ * @extends Factory<Product>
+ */
+class VendorFactory extends Factory
+{
+    protected $model = Vendor::class;
+
+    /**
+     * Define the model's default state.
+     *
+     * @return array<string, mixed>
+     */
+    public function definition()
+    {
+        return [
+            'taxonomy' => 'wcpv_product_vendors',
+            'description' => '',
+        ];
+    }
+}