Merge pull request 'use the correct table alias in joins 'on clause'' (#17) from bugfix/fix-multiple-level-join-table-alias into master

Reviewed-on: #17

src/PersistentData/PersistentDataManager.php

@@ -150,7 +150,7 @@ class PersistentDataManager implements IPersistentDataManager
 
             $columns = array_merge($columns, $this->getRelationColumns($table, $relations, $withRelations));
 
-            $this->leftJoinRelations($select, $table, $relations, $withRelations);
+            $this->leftJoinRelations($select, $table, $table, $relations, $withRelations);
             $select->columns($columns);
         } else {
             $select->columns($columns);
@@ -180,19 +180,19 @@ class PersistentDataManager implements IPersistentDataManager
         return $columns;
     }
 
-    private function leftJoinRelations(Select $select, string $table, array $relations, array $withRelations): void
+    private function leftJoinRelations(Select $select, string $table, string $tableAlias, array $relations, array $withRelations): void
     {
         foreach ($relations as $relation => $relationType) {
             $relationTableAlias = $table . '__' . $relation;
             $relationTable = call_user_func([$relationType, 'getTable']);
             $select->setTableAliases([$relationTableAlias => $relationTable]);
-            $select->leftJoin($relationTableAlias, [$relationTableAlias, 'id'], '=', [$table, $relation . '_id']);
+            $select->leftJoin($relationTableAlias, [$relationTableAlias, 'id'], '=', [$tableAlias, $relation . '_id']);
 
             $relationsOfRelation = call_user_func([$relationType, 'getRelations']);
             if (count($withRelations)) {
                 $relationsOfRelation = array_intersect_key($relationsOfRelation, array_flip($withRelations));
             }
-            $this->leftJoinRelations($select, $relationTable, $relationsOfRelation, $withRelations);
+            $this->leftJoinRelations($select, $relationTable, $relationTableAlias, $relationsOfRelation, $withRelations);
         }
     }