Action.php

<?php

class CreateAction extends Action
{
    
    private function save(Product $model)
    {
        $bodyParams = Yii::$app->getRequest()->getBodyParams();

        if (!isset($bodyParams['colors']) || empty($bodyParams['colors'])) {
            Yii::$app->getResponse()->setStatusCode(422, 'Data Validation Failed.');

            return []; // bla bla bla
        }

        $transaction = Yii::$app->getDb()->beginTransaction();
        $isNewRecord = $model->isNewRecord;

        $model->load($bodyParams, '');

        try {
            if (!$model->save()) {
                throw new DbException('There was an error creating product', $model->getFormattedErrors(), 3);
            }

            if (!$isNewRecord) {
                ProductColor::deleteAll('product_id = :id', [':id' => $model->id]);
            }

            foreach ($bodyParams['colors'] as $color) {
                $colorRecord = Color::findOne($color['uuid']);

                if (!$colorRecord) {
                    throw new DbException('There was an error creating product', [
                        ['field' => 'colors', 'message' => "Cor '{$color['uuid']}' é inválido."]
                    ], 4);
                }

                $colorRecord->link('products', $model);
            }

            $transaction->commit();
            Yii::$app->getResponse()->setStatusCode(200);

            return $model;

        } catch (DbException $e) {
            $transaction->rollBack();
            Yii::$app->getResponse()->setStatusCode(422, 'Data Validation Failed.');
            return ['code' => $e->getCode(), 'message' => $e->getMessage(), 'errors' => $e->errorInfo];

        } catch (Exception $e) {
            $transaction->rollBack();
            Yii::$app->getResponse()->setStatusCode(422, 'Data Validation Failed.');
            return ['code' => $e->getCode(), 'message' => $e->getMessage()];
        }
    }
}

Color.php

<?php

namespace App\Domain;

use App\Domain\Product\Product;
use GoSale\YiiCore\ActiveRecord\ActiveRecordAbstract;

/**
 * This is the model class for table "{{%colors}}".
 *
 * @property string $id (DC2Type:uuid_binary_ordered_time)
 * @property string $uuid (DC2Type:uuid)
 * @property array $client
 * @property string $name
 * @property string $abbreviation
 * @property int $status
 * @property int $deleted
 * @property string $created_at
 * @property string $updated_at
 * @property string $deleted_at
 * @property string $created_by
 * @property string $updated_by
 * @property string $deleted_by
 *
 * @property ProductColor[] $productsColors
 * @property Product[] $products
 */
class Color extends ActiveRecordAbstract
{
    /**
     * {@inheritdoc}
     */
    public static function tableName()
    {
        return '{{%colors}}';
    }

    /**
     * {@inheritdoc}
     */
    public function rules()
    {
        return [
            [['id', 'uuid', 'client', 'name', 'abbreviation'], 'required'],
            [['client', 'created_at', 'updated_at', 'deleted_at'], 'safe'],
            [['status', 'deleted'], 'integer'],
            ['id', 'string', 'max' => 16],
            ['uuid', 'string', 'max' => 36],
            ['name', 'string', 'max' => 60],
            ['abbreviation', 'string', 'max' => 10],
            [['created_by', 'updated_by', 'deleted_by'], 'string', 'max' => 100],
            ['uuid', 'unique'],
            ['id', 'unique'],
        ];
    }

    /**
     * {@inheritdoc}
     */
    public function attributeLabels()
    {
        return $this->buildAttributeLabels([
            'client' => 'Cliente',
            'name' => 'Nome',
            'abbreviation' => 'Sigla',
        ]);
    }

    /**
     * @return \yii\db\ActiveQuery
     */
    public function getProductsColors()
    {
        return $this->hasMany(ProductColor::class, ['color_id' => 'id']);
    }

    /**
     * @return \yii\db\ActiveQuery
     */
    public function getProducts()
    {
        return $this->hasMany(Product::class, ['id' => 'product_id'])
            ->viaTable('{{%products_colors}}', ['color_id' => 'id']);
    }
}

Product.php

<?php

namespace App\Domain\Product;

use App\Domain\Color;
use App\Domain\Grid;
use App\Domain\Group;
use App\Domain\Product\Validators\EAN13BarcodeValidator;
use GoSale\YiiCore\ActiveRecord\ActiveRecordAbstract;

/**
 * This is the model class for table "{{%products}}".
 *
 * @property string $id (DC2Type:uuid_binary_ordered_time)
 * @property string $uuid (DC2Type:uuid)
 * @property array $client
 * @property string $group_id (DC2Type:uuid_binary_ordered_time)
 * @property string $name
 * @property string $reference
 * @property string $reference_manufacturer
 * @property string $price_cost
 * @property string $price_sale
 * @property string $barcode
 * @property int $control_stock
 * @property string $observation
 * @property int $status
 * @property int $deleted
 * @property string $created_at
 * @property string $updated_at
 * @property string $deleted_at
 * @property string $created_by
 * @property string $updated_by
 * @property string $deleted_by
 *
 * @property Group $group
 * @property Grid $grid
 * @property Color[] $colors
 */
class Product extends ActiveRecordAbstract
{
    /**
     * {@inheritdoc}
     */
    public static function tableName()
    {
        return '{{%products}}';
    }

    /**
     * {@inheritdoc}
     */
    public function rules()
    {
        return [
            [
                [
                    'id',
                    'uuid',
                    'client',
                    'group_id',
                    'grid_id',
                    'name',
                    'reference',
                    'price_cost',
                    'price_sale',
                    'control_stock',
                    'barcode'
                ],
                'required'
            ],
            [['client', 'created_at', 'updated_at', 'deleted_at'], 'safe'],
            [['price_cost', 'price_sale'], 'number'],
            [['control_stock', 'status', 'deleted'], 'integer'],
            ['control_stock', 'boolean'],
            ['observation', 'string'],
            [['id', 'group_id'], 'string', 'max' => 16],
            ['uuid', 'string', 'max' => 36],
            [['name', 'reference', 'reference_manufacturer'], 'string', 'max' => 60],
            ['barcode', 'string', 'max' => 13],
            ['barcode', EAN13BarcodeValidator::class],
            [['created_by', 'updated_by', 'deleted_by'], 'string', 'max' => 100],
            ['uuid', 'unique'],
            ['id', 'unique'],
            [
                'group_id',
                'exist',
                'skipOnError' => true,
                'targetClass' => Group::class,
                'targetAttribute' => ['group_id' => 'id']
            ],
            [
                'grid_id',
                'exist',
                'skipOnError' => true,
                'targetClass' => Grid::class,
                'targetAttribute' => ['grid_id' => 'id']
            ],
        ];
    }

    /**
     * {@inheritdoc}
     */
    public function attributeLabels()
    {
        return $this->buildAttributeLabels([
            'client' => 'Cliente',
            'group_id' => 'Grupo',
            'grid_id' => 'Grade',
            'name' => 'Descrição',
            'reference' => 'Referência',
            'reference_manufacturer' => 'Referência Fabricante',
            'price_cost' => 'Preço Custo',
            'price_sale' => 'Preço Venda',
            'barcode' => 'Cod. Barras',
            'control_stock' => 'Controla Estoque',
            'observation' => 'Observações',
        ]);
    }

    /**
     * @return \yii\db\ActiveQuery
     */
    public function getGroup()
    {
        return $this->hasOne(Group::class, ['id' => 'group_id']);
    }

    /**
     * @return \yii\db\ActiveQuery
     */
    public function getGrid()
    {
        return $this->hasOne(Grid::class, ['id' => 'grid_id']);
    }

    /**
     * @return \yii\db\ActiveQuery
     */
    public function getColors()
    {
        return $this->hasMany(Color::class, ['id' => 'color_id'])
            ->viaTable('{{%products_colors}}', ['product_id' => 'id']);
    }
}

ProductColor.php

<?php

namespace App\Domain;

use App\Domain\Product\Product;
use yii\db\ActiveRecord;

/**
 * This is the model class for table "{{%products_colors}}".
 *
 * @property string $product_id (DC2Type:uuid_binary_ordered_time)
 * @property string $color_id (DC2Type:uuid_binary_ordered_time)
 *
 * @property Color $color
 * @property Product $product
 */
class ProductColor extends ActiveRecord
{
    /**
     * {@inheritdoc}
     */
    public static function tableName()
    {
        return '{{%products_colors}}';
    }

    /**
     * {@inheritdoc}
     */
    public function rules()
    {
        return [
            [['product_id', 'color_id'], 'required'],
            [['product_id', 'color_id'], 'string', 'max' => 16],
            [
                ['color_id'],
                'exist',
                'skipOnError' => true,
                'targetClass' => Color::class,
                'targetAttribute' => ['color_id' => 'id']
            ],
            [
                ['product_id'],
                'exist',
                'skipOnError' => true,
                'targetClass' => Product::class,
                'targetAttribute' => ['product_id' => 'id']
            ],
        ];
    }

    /**
     * {@inheritdoc}
     */
    public function attributeLabels()
    {
        return [
            'product_id' => 'Product ID',
            'color_id' => 'Color ID',
        ];
    }

    /**
     * @return \yii\db\ActiveQuery
     */
    public function getColor()
    {
        return $this->hasOne(Color::class, ['id' => 'color_id']);
    }

    /**
     * @return \yii\db\ActiveQuery
     */
    public function getProduct()
    {
        return $this->hasOne(Product::class, ['id' => 'product_id']);
    }
}