|
| 1 | +ActiveRecord orqali foydalanish |
| 2 | +====================== |
| 3 | + |
| 4 | +Avvalo Yii2'da ActiveRecord'dan qanday foydalanish haqida umumiy ma'lumot olish uchun [qo'llanma](https://github.com/yiisoft/yii2/blob/master/docs/guide/db-active-record.md) ga qarang. |
| 5 | + |
| 6 | +Redis'dan ActiveRecord orqali foydalanish uchun sizning sinfingiz [[yii\redis\ActiveRecord]] vorisi bo'lish va |
| 7 | +sinfingizda kamida `attributes()` metodi bo'lishi kerak. |
| 8 | + |
| 9 | + |
| 10 | + |
| 11 | +PrimaryKey'ni `[[yii\redis\ActiveRecord::primaryKey()]]` orqali tanitish mumkin, agar berilmagan bo'lsa, `id` PrimaryKey sifatida tanitiladi. |
| 12 | +PrimaryKey'ni ko'rsatmagan bo'lsangiz, PrimaryKey sifatida `id` olinganligini tekshiring. |
| 13 | + |
| 14 | +Quyida `Customer` nomli namunaviy model keltirilgan: |
| 15 | + |
| 16 | +```php |
| 17 | +class Customer extends \yii\redis\ActiveRecord |
| 18 | +{ |
| 19 | + /** |
| 20 | + * @return array the list of attributes for this record |
| 21 | + */ |
| 22 | + public function attributes() |
| 23 | + { |
| 24 | + return ['id', 'name', 'address', 'registration_date']; |
| 25 | + } |
| 26 | + |
| 27 | + /** |
| 28 | + * @return ActiveQuery defines a relation to the Order record (can be in other database, e.g. elasticsearch or sql) |
| 29 | + */ |
| 30 | + public function getOrders() |
| 31 | + { |
| 32 | + return $this->hasMany(Order::className(), ['customer_id' => 'id']); |
| 33 | + } |
| 34 | + |
| 35 | + public static function find() |
| 36 | + { |
| 37 | + return new CustomerQuery(get_called_class()); |
| 38 | + } |
| 39 | +} |
| 40 | + |
| 41 | +class CustomerQuery extends \yii\redis\ActiveQuery |
| 42 | +{ |
| 43 | + /** |
| 44 | + * Defines a scope that modifies the `$query` to return only active(status = 1) customers |
| 45 | + */ |
| 46 | + public function active() |
| 47 | + { |
| 48 | + return $this->andWhere(['status' => 1]); |
| 49 | + } |
| 50 | +} |
| 51 | +``` |
| 52 | + |
| 53 | +Общее использование redis ActiveRecord очень похоже на БД ActiveRecord как описано в [руководстве](https://github.com/yiisoft/yii2/blob/master/docs/guide/db-active-record.md). |
| 54 | +Он поддерживает тот же интерфейс и функции, за исключением следующих ограничений: |
| 55 | + |
| 56 | +Redis'dan ActiveRecord'da foydalanish, ma'lumotlar bazasi bilan ishlashga juda o'xshaydi. |
| 57 | +Faqat u quyidagi cheklovlardan tashqari bir xil interfeys va xususiyatlarni qo'llab-quvvatlaydi: |
| 58 | + |
| 59 | +- Redis SQL'ni qo'llab-quvvatlamagani uchun quidagi metodlardan foydalanib bo'lmaydi |
| 60 | + `where()`, `limit()`, `offset()`, `orderBy()` va `indexBy()`. |
| 61 | +- `via` - jadval via orqali aniqlab (bog'lanib) bo'lmaydi, chunki redisda jadvallar mavjud emas. Siz bog'lanishlarni boshqa ma'lumotlar orqali belgilashingiz mumkin. |
| 62 | + |
| 63 | +Redis ActiveRecords dan oddiy ActiveRecord sinflariga va aksincha bog'lanishlarni aniqlashingiz mumkin. |
| 64 | + |
| 65 | +Masalan: |
| 66 | + |
| 67 | +```php |
| 68 | +$customer = new Customer(); |
| 69 | +$customer->attributes = ['name' => 'test']; |
| 70 | +$customer->save(); |
| 71 | +echo $customer->id; // id will automatically be incremented if not set explicitly |
| 72 | + |
| 73 | +$customer = Customer::find()->where(['name' => 'test'])->one(); // find by query |
| 74 | +$customer = Customer::find()->active()->all(); // find all by query (using the `active` scope) |
| 75 | +``` |
0 commit comments