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<?php |
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namespace Staudenmeir\EloquentHasManyDeep\Eloquent\Relations\Traits; |
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use Illuminate\Database\Eloquent\Builder; |
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use Illuminate\Database\Eloquent\Model; |
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use Illuminate\Database\Eloquent\SoftDeletes; |
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use Illuminate\Database\Query\JoinClause; |
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use Staudenmeir\EloquentHasManyDeep\Eloquent\CompositeKey; |
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trait JoinsThroughParents |
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{ |
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/** |
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* Join a through parent table. |
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* |
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* @param \Illuminate\Database\Eloquent\Builder $query |
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* @param \Illuminate\Database\Eloquent\Model $throughParent |
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* @param \Illuminate\Database\Eloquent\Model $predecessor |
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* @param \Staudenmeir\EloquentHasManyDeep\Eloquent\CompositeKey|array|string $foreignKey |
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* @param \Staudenmeir\EloquentHasManyDeep\Eloquent\CompositeKey|array|string $localKey |
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* @param string $prefix |
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* @return void |
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*/ |
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protected function joinThroughParent(Builder $query, Model $throughParent, Model $predecessor, $foreignKey, $localKey, $prefix) |
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{ |
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$joins = $this->getThroughParentsJoin($query, $throughParent, $predecessor, $foreignKey, $localKey); |
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foreach ($joins as $i => [$first, $second]) { |
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$joins[$i] = [ |
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$throughParent->qualifyColumn($first), |
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$predecessor->qualifyColumn($prefix.$second), |
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]; |
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} |
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$query->join( |
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$throughParent->getTable(), |
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function (JoinClause $join) use ($joins) { |
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foreach ($joins as [$first, $second]) { |
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$join->on($first, '=', $second); |
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} |
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} |
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); |
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if ($this->throughParentInstanceSoftDeletes($throughParent)) { |
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$column= $throughParent->getQualifiedDeletedAtColumn(); |
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$query->withGlobalScope(__CLASS__ . ":$column", function (Builder $query) use ($column) { |
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$query->whereNull($column); |
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}); |
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} |
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} |
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/** |
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* Get the joins for a through parent table. |
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* |
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* @param \Illuminate\Database\Eloquent\Builder $query |
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* @param \Illuminate\Database\Eloquent\Model $throughParent |
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* @param \Illuminate\Database\Eloquent\Model $predecessor |
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* @param \Staudenmeir\EloquentHasManyDeep\Eloquent\CompositeKey|array|string $foreignKey |
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* @param \Staudenmeir\EloquentHasManyDeep\Eloquent\CompositeKey|array|string $localKey |
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* @return array |
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*/ |
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protected function getThroughParentsJoin(Builder $query, Model $throughParent, Model $predecessor, $foreignKey, $localKey): array |
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{ |
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$joins = []; |
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if ($localKey instanceof CompositeKey) { |
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foreach ($localKey->columns as $i => $column) { |
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$joins[] = [$column, $foreignKey->columns[$i]]; |
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} |
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} else { |
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if (is_array($localKey)) { |
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$query->where($throughParent->qualifyColumn($localKey[0]), '=', $predecessor->getMorphClass()); |
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$localKey = $localKey[1]; |
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} |
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if (is_array($foreignKey)) { |
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$query->where($predecessor->qualifyColumn($foreignKey[0]), '=', $throughParent->getMorphClass()); |
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$foreignKey = $foreignKey[1]; |
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} |
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$joins[] = [$localKey, $foreignKey]; |
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} |
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return $joins; |
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} |
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/** |
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* Determine whether a "through" parent instance of the relation uses SoftDeletes. |
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* |
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* @param \Illuminate\Database\Eloquent\Model $instance |
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* @return bool |
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*/ |
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public function throughParentInstanceSoftDeletes(Model $instance) |
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{ |
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return in_array(SoftDeletes::class, class_uses_recursive($instance)); |
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} |
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} |
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