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<?php |
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namespace Staudenmeir\EloquentJsonRelations\Relations\Postgres; |
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use Illuminate\Database\Eloquent\Builder; |
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trait HasOneOrManyThrough |
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{ |
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use IsPostgresRelation; |
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/** |
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* Set the join clause on the query. |
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* |
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* @param \Illuminate\Database\Eloquent\Builder|null $query |
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* @return void |
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*/ |
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protected function performJoin(Builder $query = null) |
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{ |
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$query = $query ?: $this->query; |
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$farKey = $this->jsonColumn($query, $this->throughParent, $this->getQualifiedFarKeyName(), $this->secondLocalKey); |
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$query->join($this->throughParent->getTable(), $this->getQualifiedParentKeyName(), '=', $farKey); |
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if ($this->throughParentSoftDeletes()) { |
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$query->whereNull($this->throughParent->getQualifiedDeletedAtColumn()); |
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} |
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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, $columns = ['*']) |
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{ |
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if ($parentQuery->getQuery()->from === $query->getQuery()->from) { |
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return $this->getRelationExistenceQueryForSelfRelation($query, $parentQuery, $columns); |
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} |
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if ($parentQuery->getQuery()->from === $this->throughParent->getTable()) { |
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return $this->getRelationExistenceQueryForThroughSelfRelation($query, $parentQuery, $columns); |
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} |
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$this->performJoin($query); |
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$firstKey = $this->jsonColumn($query, $this->farParent, $this->getQualifiedFirstKeyName(), $this->localKey); |
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return $query->select($columns)->whereColumn( |
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$this->getQualifiedLocalKeyName(), |
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'=', |
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$firstKey |
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); |
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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, $columns = ['*']) |
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{ |
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$query->from($query->getModel()->getTable().' as '.$hash = $this->getRelationCountHash()); |
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$farKey = $this->jsonColumn($query, $this->throughParent, $hash.'.'.$this->secondKey, $this->secondLocalKey); |
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$query->join($this->throughParent->getTable(), $this->getQualifiedParentKeyName(), '=', $farKey); |
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$query->getModel()->setTable($hash); |
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$firstKey = $this->jsonColumn($query, $this->farParent, $this->getQualifiedFirstKeyName(), $this->localKey); |
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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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$firstKey |
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); |
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} |
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/** |
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* Add the constraints for a relationship query on the same table as the through parent. |
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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 getRelationExistenceQueryForThroughSelfRelation(Builder $query, Builder $parentQuery, $columns = ['*']) |
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{ |
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$table = $this->throughParent->getTable().' as '.$hash = $this->getRelationCountHash(); |
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$farKey = $this->jsonColumn($query, $this->throughParent, $this->getQualifiedFarKeyName(), $this->secondLocalKey); |
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$query->join($table, $hash.'.'.$this->secondLocalKey, '=', $farKey); |
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if ($this->throughParentSoftDeletes()) { |
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$query->whereNull($hash.'.'.$this->throughParent->getDeletedAtColumn()); |
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} |
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$firstKey = $this->jsonColumn($query, $this->farParent, $hash.'.'.$this->firstKey, $this->localKey); |
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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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$firstKey |
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); |
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} |
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} |
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staudenmeir /
eloquent-json-relations
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