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<?php |
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namespace Nip\Records\Relations; |
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use Nip\Database\Query\AbstractQuery; |
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use Nip\Database\Query\Delete as DeleteQuery; |
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use Nip\Database\Query\Insert as InsertQuery; |
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use Nip\Database\Query\Select as SelectQuery; |
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use Nip\HelperBroker; |
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use Nip\Records\Collections\Collection as RecordCollection; |
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use Nip\Records\Record; |
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use Nip\Records\Relations\Traits\HasPivotTable; |
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/** |
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* Class HasAndBelongsToMany |
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* @package Nip\Records\Relations |
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*/ |
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class HasAndBelongsToMany extends HasOneOrMany |
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{ |
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use HasPivotTable; |
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/** |
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* @var string |
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*/ |
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protected $type = 'hasAndBelongsToMany'; |
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/** |
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* @var null |
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*/ |
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protected $joinFields = null; |
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/** |
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* @inheritdoc |
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*/ |
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public function addParams($params) |
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{ |
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parent::addParams($params); |
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$this->addPivotParams($params); |
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} |
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/** @noinspection PhpMissingParentCallCommonInspection |
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* @return SelectQuery |
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* @throws \Exception |
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*/ |
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public function newQuery() |
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{ |
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$query = $this->getDB()->newSelect(); |
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$query->from($this->getWith()->getFullNameTable()); |
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$query->from($this->getDB()->getDatabase() . '.' . $this->getTable()); |
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foreach ($this->getWith()->getFields() as $field) { |
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$query->cols(["{$this->getWith()->getTable()}.$field", $field]); |
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} |
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foreach ($this->getJoinFields() as $field) { |
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$query->cols(["{$this->getTable()}.$field", "__$field"]); |
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} |
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$this->hydrateQueryWithPivotConstraints($query); |
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$order = $this->getParam('order'); |
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if (is_array($order)) { |
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foreach ($order as $item) { |
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$query->order([$item[0], $item[1]]); |
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} |
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} |
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return $query; |
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} |
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/** |
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* @return null|array |
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*/ |
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protected function getJoinFields() |
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{ |
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if ($this->joinFields == null) { |
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$this->initJoinFields(); |
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} |
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return $this->joinFields; |
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} |
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/** |
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* @param null $joinFields |
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*/ |
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public function setJoinFields($joinFields) |
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{ |
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$this->joinFields = $joinFields; |
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} |
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protected function initJoinFields() |
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{ |
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$structure = $this->getDB()->getMetadata()->describeTable($this->getTable()); |
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$this->setJoinFields(array_keys($structure["fields"])); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function populateQuerySpecific(AbstractQuery $query) |
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{ |
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$pk1 = $this->getPrimaryKey(); |
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$fk1 = $this->getFK(); |
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$query->where("`{$this->getTable()}`.`$fk1` = ?", $this->getItem()->{$pk1}); |
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return $query; |
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} |
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/** |
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* Simple select query from the link table |
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* @param bool $specific |
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* @return SelectQuery |
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*/ |
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public function getLinkQuery($specific = true) |
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{ |
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$query = $this->getDB()->newSelect(); |
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$query->from($this->getTable()); |
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if ($specific) { |
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$query = $this->populateQuerySpecific($query); |
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} |
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return $query; |
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} |
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/** @noinspection PhpMissingParentCallCommonInspection |
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* @param RecordCollection $collection |
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* @return RecordCollection |
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*/ |
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public function getEagerResults($collection) |
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{ |
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if ($collection->count() < 1) { |
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return $this->getWith()->newCollection(); |
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} |
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$query = $this->getEagerQuery($collection); |
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$return = $this->newCollection(); |
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$results = $this->getDB()->execute($query); |
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if ($results->numRows() > 0) { |
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$i = 1; |
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$rows = $results->fetchResults(); |
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foreach ($rows as $row) { |
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$row['relation_key'] = $i++; |
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$item = $this->getWith()->getNew($row); |
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$return->add($item, 'relation_key'); |
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} |
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} |
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return $return; |
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} |
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/** @noinspection PhpMissingParentCallCommonInspection |
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* @return $this |
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*/ |
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public function save() |
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{ |
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$this->deleteConnections(); |
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$this->saveConnections(); |
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return $this; |
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} |
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protected function deleteConnections() |
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{ |
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$query = $this->newDeleteQuery(); |
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$query->where( |
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"{$this->getFK()} = ?", |
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$this->getItemRelationPrimaryKey() |
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); |
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// echo $query; |
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$query->execute(); |
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} |
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/** |
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* @return DeleteQuery |
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*/ |
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protected function newDeleteQuery() |
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{ |
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$query = $this->getDB()->newDelete(); |
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$query->table($this->getTable()); |
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return $query; |
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} |
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protected function saveConnections() |
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{ |
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if ($this->hasResults()) { |
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$query = $this->newInsertQuery(); |
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$this->queryAttachRecords($query, $this->getResults()); |
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// echo $query; |
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$query->execute(); |
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} |
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} |
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/** |
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* @return InsertQuery |
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*/ |
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protected function newInsertQuery() |
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{ |
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$query = $this->getDB()->newInsert(); |
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$query->table($this->getTable()); |
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return $query; |
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} |
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/** |
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* @param InsertQuery $query |
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* @param $records |
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*/ |
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protected function queryAttachRecords($query, $records) |
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{ |
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foreach ($records as $record) { |
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$data = $this->formatAttachData($record); |
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foreach ($this->getJoinFields() as $field) { |
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if ($record->{"__$field"}) { |
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$data[$field] = $record->{"__$field"}; |
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} else { |
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$data[$field] = $data[$field] ? $data[$field] : false; |
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} |
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} |
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$query->data($data); |
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} |
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} |
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/** |
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* @param $record |
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* @return array |
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*/ |
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protected function formatAttachData($record) |
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{ |
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$data = [ |
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$this->getManager()->getPrimaryFK() => $this->getItem()->{$this->getManager()->getPrimaryKey()}, |
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$this->getPivotFK() => $record->{$this->getWith()->getPrimaryKey()}, |
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]; |
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return $data; |
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} |
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/** |
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* @param $model |
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*/ |
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public function attach($model) |
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{ |
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$query = $this->newInsertQuery(); |
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$this->queryAttachRecords($query, [$model]); |
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// echo $query; |
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$query->execute(); |
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} |
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/** |
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* @param Record $model |
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*/ |
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public function detach($model) |
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{ |
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$query = $this->newDeleteQuery(); |
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$this->queryDetachRecords($query, [$model]); |
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// echo $query; |
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$query->execute(); |
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} |
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/** |
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* @param DeleteQuery $query |
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* @param $records |
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*/ |
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protected function queryDetachRecords($query, $records) |
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{ |
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$ids = HelperBroker::get('Arrays')->pluck($records, $this->getWith()->getPrimaryKey()); |
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$query->where( |
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"{$this->getPivotFK()} IN ?", |
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$ids |
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); |
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$query->where( |
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"{$this->getFK()} = ?", |
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$this->getItemRelationPrimaryKey() |
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); |
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} |
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/** @noinspection PhpMissingParentCallCommonInspection |
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* @return mixed |
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*/ |
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public function getWithClass() |
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{ |
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return $this->getName(); |
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} |
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/** @noinspection PhpMissingParentCallCommonInspection |
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* @return string |
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*/ |
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protected function getDictionaryKey() |
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{ |
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return '__' . $this->getFK(); |
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} |
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} |
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