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<?php |
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namespace Staudenmeir\EloquentHasManyDeep\Eloquent\Relations\Traits; |
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use Closure; |
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use Exception; |
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use Illuminate\Database\Eloquent\Builder; |
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use Staudenmeir\EloquentHasManyDeep\HasTableAlias; |
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trait HasExistenceQueries |
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{ |
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/** |
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* Add the constraints for a relationship query. |
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* |
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* @param \Illuminate\Database\Eloquent\Builder $query |
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* @param \Illuminate\Database\Eloquent\Builder $parentQuery |
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* @param array|mixed $columns |
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* @return \Illuminate\Database\Eloquent\Builder |
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*/ |
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public function getRelationExistenceQuery(Builder $query, Builder $parentQuery, $columns = ['*']) |
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{ |
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$this->setRelationExistenceQueryAlias($parentQuery); |
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if ($this->firstKey instanceof Closure || $this->localKey instanceof Closure) { |
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$this->performJoin($query); |
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$closureKey = $this->firstKey instanceof Closure ? $this->firstKey : $this->localKey; |
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$closureKey($query, $parentQuery); |
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return $query->select($columns); |
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} |
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$query = parent::getRelationExistenceQuery($query, $parentQuery, $columns); |
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if (is_array($this->foreignKeys[0])) { |
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$column = $this->throughParent->qualifyColumn($this->foreignKeys[0][0]); |
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$query->where($column, '=', $this->farParent->getMorphClass()); |
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} elseif ($this->hasLeadingCompositeKey()) { |
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$this->getRelationExistenceQueryWithCompositeKey($query); |
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} |
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return $query; |
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} |
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/** |
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* Add the constraints for a relationship query on the same table. |
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* |
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* @param \Illuminate\Database\Eloquent\Builder $query |
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* @param \Illuminate\Database\Eloquent\Builder $parentQuery |
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* @param array|mixed $columns |
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* @return \Illuminate\Database\Eloquent\Builder |
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*/ |
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public function getRelationExistenceQueryForSelfRelation(Builder $query, Builder $parentQuery, $columns = ['*']) |
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{ |
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$hash = $this->getRelationCountHash(); |
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$query->from($query->getModel()->getTable().' as '.$hash); |
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$this->performJoin($query); |
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$query->getModel()->setTable($hash); |
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return $query->select($columns)->whereColumn( |
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$parentQuery->getQuery()->from.'.'.$this->localKey, |
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'=', |
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$this->getQualifiedFirstKeyName() |
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); |
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} |
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/** |
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* Set the table alias for a relation existence query if necessary. |
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* |
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* @param \Illuminate\Database\Eloquent\Builder $parentQuery |
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* @return void |
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*/ |
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protected function setRelationExistenceQueryAlias(Builder $parentQuery): void |
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{ |
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foreach ($this->throughParents as $throughParent) { |
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if ($throughParent->getTable() === $parentQuery->getQuery()->from) { |
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if (!in_array(HasTableAlias::class, class_uses_recursive($throughParent))) { |
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$traitClass = HasTableAlias::class; |
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$parentClass = get_class($throughParent); |
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throw new Exception( |
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<<<EOT |
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This query requires an additional trait. Please add the $traitClass trait to $parentClass. |
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See https://github.com/staudenmeir/eloquent-has-many-deep/issues/137 for details. |
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EOT |
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); |
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} |
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$table = $throughParent->getTable() . ' as ' . $this->getRelationCountHash(); |
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$throughParent->setTable($table); |
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break; |
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} |
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} |
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} |
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} |
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staudenmeir /
eloquent-has-many-deep
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