ActiveRecord orqali foydalanish

Avvalo Yii2'da ActiveRecord'dan qanday foydalanish haqida umumiy ma'lumot olish uchun qo'llanma ga qarang.

Redis'dan ActiveRecord orqali foydalanish uchun sizning sinfingiz [[yii\redis\ActiveRecord]] vorisi bo'lish va sinfingizda kamida attributes() metodi bo'lishi kerak.

PrimaryKey'ni [[yii\redis\ActiveRecord::primaryKey()]] orqali tanitish mumkin, agar berilmagan bo'lsa, id PrimaryKey sifatida tanitiladi. PrimaryKey'ni ko'rsatmagan bo'lsangiz, PrimaryKey sifatida id olinganligini tekshiring.

Quyida Customer nomli namunaviy model keltirilgan:

class Customer extends \yii\redis\ActiveRecord
{
    /**
     * [@return](https://github.com/return) array the list of attributes for this record
     */
    public function attributes()
    {
        return ['id', 'name', 'address', 'registration_date'];
    }

    /**
     * [@return](https://github.com/return) ActiveQuery defines a relation to the Order record (can be in other database, e.g. elasticsearch or sql)
     */
    public function getOrders()
    {
        return $this->hasMany(Order::className(), ['customer_id' => 'id']);
    }

    public static function find()
    {
        return new CustomerQuery(get_called_class());
    }
}

class CustomerQuery extends \yii\redis\ActiveQuery
{
    /**
     * Defines a scope that modifies the `$query` to return only active(status = 1) customers
     */
    public function active()
    {
        return $this->andWhere(['status' => 1]);
    }
}

Общее использование redis ActiveRecord очень похоже на БД ActiveRecord как описано в руководстве. Он поддерживает тот же интерфейс и функции, за исключением следующих ограничений:

Redis'dan ActiveRecord'da foydalanish, ma'lumotlar bazasi bilan ishlashga juda o'xshaydi. Faqat u quyidagi cheklovlardan tashqari bir xil interfeys va xususiyatlarni qo'llab-quvvatlaydi:

• Redis SQL'ni qo'llab-quvvatlamagani uchun quidagi metodlardan foydalanib bo'lmaydi where(), limit(), offset(), orderBy() va indexBy().
• via - jadval via orqali aniqlab (bog'lanib) bo'lmaydi, chunki redisda jadvallar mavjud emas. Siz bog'lanishlarni boshqa ma'lumotlar orqali belgilashingiz mumkin.

Redis ActiveRecords dan oddiy ActiveRecord sinflariga va aksincha bog'lanishlarni aniqlashingiz mumkin.

Masalan:

$customer = new Customer();
$customer->attributes = ['name' => 'test'];
$customer->save();
echo $customer->id; // id will automatically be incremented if not set explicitly

$customer = Customer::find()->where(['name' => 'test'])->one(); // find by query
$customer = Customer::find()->active()->all(); // find all by query (using the `active` scope)