Реализует функционал получения данных из БД с отношениями "один к одному" и "один ко многим" с использованием одного запроса к БД, а также с учетом всех ограничений в запросе при получении отношений.
composer require smoren/yii2-query-relation-manager
Будем использовать следующие таблицы в БД с наборами полей:
- city (id, name)
- address (id, city_id, name)
- place (id, address_id, name)
- comment (id, place_id, username, mark, text)
и соответствующие им классы моделей ActiveRecord:
- app\models\City
- app\models\Address
- app\models\Place
- app\models\Comment
<?php
use Smoren\Yii2\QueryRelationManager\Yii2\QueryRelationManager;
use Smoren\Yii2\QueryRelationManager\Yii2\QueryRelationDataProvider;
use app\models\City;
use app\models\Address;
use app\models\Place;
use app\models\Comment;
// Выбираем адреса с городом, местами и комментариями о местах
$result = QueryRelationManager::select(Address::class, 'a')
->withSingle('city', City::class, 'c', 'a', ['id' => 'city_id'])
->withMultiple('places', Place::class, 'p', 'a', ['address_id' => 'id'])
->withMultiple('comments', Comment::class, 'cm', 'p', ['place_id' => 'id'])
->all();
print_r($result);
/*Array
(
[0] => Array
(
[id] => 1
[city_id] => 1
[name] => Tverskaya st., 7
[city] => Array
(
[id] => 1
[name] => Moscow
)
[places] => Array
(
[0] => Array
(
[id] => 1
[address_id] => 1
[name] => TC Tverskoy
[comments] => Array
(
[0] => Array
(
[id] => 1
[place_id] => 1
[username] => Ivan Mustafaevich
[mark] => 3
[text] => Not bad, not good
)
[1] => Array
(
[id] => 2
[place_id] => 1
[username] => Peter
[mark] => 5
[text] => Good place
)
[2] => Array
(
[id] => 3
[place_id] => 1
[username] => Mark
[mark] => 1
[text] => Bad place
)
)
)
[1] => Array
(
[id] => 2
[address_id] => 1
[name] => Tverskaya cafe
[comments] => Array
(
)
)
)
)
[1] => Array
(
[id] => 2
[city_id] => 1
[name] => Schipok st., 1
[city] => Array
(
[id] => 1
[name] => Moscow
)
[places] => Array
(
[0] => Array
(
[id] => 3
[address_id] => 2
[name] => Stasova music school
[comments] => Array
(
[0] => Array
(
[id] => 4
[place_id] => 3
[username] => Ann
[mark] => 5
[text] => The best music school!
)
)
)
)
)
[2] => Array
(
[id] => 3
[city_id] => 2
[name] => Mayakovskogo st., 12
[city] => Array
(
[id] => 2
[name] => St. Petersburg
)
[places] => Array
(
[0] => Array
(
[id] => 4
[address_id] => 3
[name] => Hostel on Mayakovskaya
[comments] => Array
(
)
)
[1] => Array
(
[id] => 5
[address_id] => 3
[name] => Mayakovskiy Store
[comments] => Array
(
[0] => Array
(
[id] => 5
[place_id] => 5
[username] => Stas
[mark] => 4
[text] => Rather good place
)
)
)
)
)
[3] => Array
(
[id] => 4
[city_id] => 2
[name] => Galernaya st., 3
[city] => Array
(
[id] => 2
[name] => St. Petersburg
)
[places] => Array
(
[0] => Array
(
[id] => 6
[address_id] => 4
[name] => Cafe on Galernaya
[comments] => Array
(
[0] => Array
(
[id] => 6
[place_id] => 6
[username] => Stas
[mark] => 3
[text] => Small menu, long wait
)
)
)
)
)
)*/
// Выбираем места с адресом и городом, а также комментариями, причем:
// - комментарии имеют оценку не ниже 3
// - если подходящих комментариев нет, место не попадает в выборку (inner join)
// - для каждого места считаем количество комментариев, количество оценок "5" и среднюю оценку среди оценок не ниже 3
$result = QueryRelationManager::select(Place::class, 'p')
->withSingle('address', Address::class, 'a', 'p', ['id' => 'address_id'])
->withSingle('city', City::class, 'c', 'a', ['id' => 'city_id'])
->withMultiple('comments', Comment::class, 'cm', 'p', ['place_id' => 'id'],
'inner', 'and cm.mark >= :mark', [':mark' => 3])
->modify('p', function(array &$place) {
$place['comments_count'] = count($place['comments']);
$place['mark_five_count'] = 0;
$place['mark_average'] = 0;
foreach($place['comments'] as $comment) {
$place['mark_average'] += $comment['mark'];
if($comment['mark'] == 5) {
$place['mark_five_count']++;
}
}
$place['mark_average'] /= $place['comments_count'];
})
->all();
print_r($result);
/*Array
(
[0] => Array
(
[id] => 1
[address_id] => 1
[name] => TC Tverskoy
[address] => Array
(
[id] => 1
[city_id] => 1
[name] => Tverskaya st., 7
[city] => Array
(
[id] => 1
[name] => Moscow
)
)
[comments] => Array
(
[0] => Array
(
[id] => 1
[place_id] => 1
[username] => Ivan Mustafaevich
[mark] => 3
[text] => Not bad, not good
)
[1] => Array
(
[id] => 2
[place_id] => 1
[username] => Peter
[mark] => 5
[text] => Good place
)
)
[comments_count] => 2
[mark_five_count] => 1
[mark_average] => 4
)
[1] => Array
(
[id] => 3
[address_id] => 2
[name] => Stasova music school
[address] => Array
(
[id] => 2
[city_id] => 1
[name] => Schipok st., 1
[city] => Array
(
[id] => 1
[name] => Moscow
)
)
[comments] => Array
(
[0] => Array
(
[id] => 4
[place_id] => 3
[username] => Ann
[mark] => 5
[text] => The best music school!
)
)
[comments_count] => 1
[mark_five_count] => 1
[mark_average] => 5
)
[2] => Array
(
[id] => 5
[address_id] => 3
[name] => Mayakovskiy Store
[address] => Array
(
[id] => 3
[city_id] => 2
[name] => Mayakovskogo st., 12
[city] => Array
(
[id] => 2
[name] => St. Petersburg
)
)
[comments] => Array
(
[0] => Array
(
[id] => 5
[place_id] => 5
[username] => Stas
[mark] => 4
[text] => Rather good place
)
)
[comments_count] => 1
[mark_five_count] => 0
[mark_average] => 4
)
[3] => Array
(
[id] => 6
[address_id] => 4
[name] => Cafe on Galernaya
[address] => Array
(
[id] => 4
[city_id] => 2
[name] => Galernaya st., 3
[city] => Array
(
[id] => 2
[name] => St. Petersburg
)
)
[comments] => Array
(
[0] => Array
(
[id] => 6
[place_id] => 6
[username] => Stas
[mark] => 3
[text] => Small menu, long wait
)
)
[comments_count] => 1
[mark_five_count] => 0
[mark_average] => 3
)
)*/
// Получаем города из списка ID с адресами
$cityIds = City::find()->limit(2)->offset(1)->select('id')->column();
$result = QueryRelationManager::select(City::class, 'c')
->withMultiple('addresses', Address::class, 'a', 'c', ['city_id' => 'id'])
->filter(function(Query $q) use ($cityIds) {
$q->andWhere(['c.id' => $cityIds])->orderBy(['a.id' => SORT_ASC]);
})
->all();
print_r($result);
/*Array
(
[0] => Array
(
[id] => 3
[name] => Samara
[addresses] => Array
(
)
)
[1] => Array
(
[id] => 2
[name] => St. Petersburg
[addresses] => Array
(
[0] => Array
(
[id] => 3
[city_id] => 2
[name] => Mayakovskogo st., 12
)
[1] => Array
(
[id] => 4
[city_id] => 2
[name] => Galernaya st., 3
)
)
)
)*/
// Используем QueryRelationDataProvider для пагинации
$qrm = QueryRelationManager::select(City::class, 'c')
->withMultiple('addresses', Address::class, 'a', 'c', ['city_id' => 'id']);
$dataProvider = new QueryRelationDataProvider([
'queryRelationManager' => $qrm,
'pagination' => [
'pageSize' => 2,
'page' => 0,
],
]);
print_r($dataProvider->getModels());
/*Array
(
[0] => Array
(
[id] => 1
[name] => Moscow
[addresses] => Array
(
[0] => Array
(
[id] => 2
[city_id] => 1
[name] => Schipok st., 1
)
[1] => Array
(
[id] => 1
[city_id] => 1
[name] => Tverskaya st., 7
)
)
)
[1] => Array
(
[id] => 2
[name] => St. Petersburg
[addresses] => Array
(
[0] => Array
(
[id] => 4
[city_id] => 2
[name] => Galernaya st., 3
)
[1] => Array
(
[id] => 3
[city_id] => 2
[name] => Mayakovskogo st., 12
)
)
)
)*/
// Используем упрощенный синтаксис построения запросов
// Получим все адреса с городом, местами и комментариями, оценка которых не ниже трех
// Метод City:select() добавлен в модель City с помощью трейта ActiveRecordTrait
$result = Address::select('a')
->with('city', 'c')
->with('places', 'p')
->with(
'comments', 'cm', 'p',
'left', 'and cm.mark >= :mark', [':mark' => 3]
)
->all();
print_r($result);
/*Array
(
[0] => Array
(
[id] => 1
[city_id] => 1
[name] => Tverskaya st., 7
[city] => Array
(
[id] => 1
[name] => Moscow
)
[places] => Array
(
[0] => Array
(
[id] => 1
[address_id] => 1
[name] => TC Tverskoy
[comments] => Array
(
[0] => Array
(
[id] => 1
[place_id] => 1
[username] => Ivan Mustafaevich
[mark] => 3
[text] => Not bad, not good
)
[1] => Array
(
[id] => 2
[place_id] => 1
[username] => Peter
[mark] => 5
[text] => Good place
)
)
)
[1] => Array
(
[id] => 2
[address_id] => 1
[name] => Tverskaya cafe
[comments] => Array
(
)
)
)
)
[1] => Array
(
[id] => 2
[city_id] => 1
[name] => Schipok st., 1
[city] => Array
(
[id] => 1
[name] => Moscow
)
[places] => Array
(
[0] => Array
(
[id] => 3
[address_id] => 2
[name] => Stasova music school
[comments] => Array
(
[0] => Array
(
[id] => 4
[place_id] => 3
[username] => Ann
[mark] => 5
[text] => The best music school!
)
)
)
)
)
[2] => Array
(
[id] => 3
[city_id] => 2
[name] => Mayakovskogo st., 12
[city] => Array
(
[id] => 2
[name] => St. Petersburg
)
[places] => Array
(
[0] => Array
(
[id] => 4
[address_id] => 3
[name] => Hostel on Mayakovskaya
[comments] => Array
(
)
)
[1] => Array
(
[id] => 5
[address_id] => 3
[name] => Mayakovskiy Store
[comments] => Array
(
[0] => Array
(
[id] => 5
[place_id] => 5
[username] => Stas
[mark] => 4
[text] => Rather good place
)
)
)
)
)
[3] => Array
(
[id] => 4
[city_id] => 2
[name] => Galernaya st., 3
[city] => Array
(
[id] => 2
[name] => St. Petersburg
)
[places] => Array
(
[0] => Array
(
[id] => 6
[address_id] => 4
[name] => Cafe on Galernaya
[comments] => Array
(
[0] => Array
(
[id] => 6
[place_id] => 6
[username] => Stas
[mark] => 3
[text] => Small menu, long wait
)
)
)
)
)
)*/Репозиторий с демонстрацией использования расширения: https://github.com/Smoren/yii2-query-relation-manager-demo