make it possible to use the same table in multiple joins
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@ -150,7 +150,7 @@ class PersistentDataManager implements IPersistentDataManager
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$columns = array_merge($columns, $this->getRelationColumns($relations, $withRelations));
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$this->leftJoinRelations($select, $table, $relations, $withRelations);
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$this->leftJoinRelations($select, $table, $relations, $withRelations, [$table => true]);
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$select->columns($columns);
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} else {
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$select->columns($columns);
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@ -179,20 +179,39 @@ class PersistentDataManager implements IPersistentDataManager
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return $columns;
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}
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private function leftJoinRelations(Select $select, string $table, array $relations, array $withRelations): void
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private function leftJoinRelations(Select $select, string $table, array $relations, array $withRelations, array &$alreadyUsedTableAliases): void
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{
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foreach ($relations as $relation => $relationType) {
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$relationTable = call_user_func([$relationType, 'getTable']);
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$relationTable = $this->generateTableAlias($select, call_user_func([$relationType, 'getTable']), $alreadyUsedTableAliases);
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$select->leftJoin($relationTable, [$relationTable, 'id'], '=', [$table, $relation . '_id']);
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$nextOrderRelations = call_user_func([$relationType, 'getRelations']);
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$relationsOfRelation = call_user_func([$relationType, 'getRelations']);
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if (count($withRelations)) {
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$nextOrderRelations = array_intersect_key($nextOrderRelations, array_flip($withRelations));
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$relationsOfRelation = array_intersect_key($relationsOfRelation, array_flip($withRelations));
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}
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$this->leftJoinRelations($select, $relationTable, $nextOrderRelations, $withRelations);
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$this->leftJoinRelations($select, $relationTable, $relationsOfRelation, $withRelations, $alreadyUsedTableAliases);
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}
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}
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private function generateTableAlias(Select $select, string $table, array &$alreadyUsedTableAliases)
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{
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if (!isset($alreadyUsedTableAliases[$table])) {
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$alreadyUsedTableAliases[$table] = true;
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return $table;
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}
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$i = 2;
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do {
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$alias = $table[0] . $i;
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$i++;
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} while (isset($alreadyUsedTableAliases[$alias]));
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$select->setTableAliases([$alias => $table]);
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$alreadyUsedTableAliases[$alias] = true;
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return $alias;
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}
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private function fillWithData(array &$data, Model $model, array $withRelations = [], ?string $modelKey = null): void
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{
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$relations = $model::getRelations();
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