Viewing file:  CascadePersistManager.php (2.81 KB) -rw-rw-rw-
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<?php
namespace Maatwebsite\Excel\Imports\Persistence;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\BelongsToMany;
use Illuminate\Support\Collection;
use Maatwebsite\Excel\Transactions\TransactionHandler;
/** @todo */
class CascadePersistManager
{
/**
* @var TransactionHandler
*/
private $transaction;
/**
* @param TransactionHandler $transaction
*/
public function __construct(TransactionHandler $transaction)
{
$this->transaction = $transaction;
}
/**
* @param Model $model
* @return bool
*/
public function persist(Model $model): bool
{
return ($this->transaction)(function () use ($model) {
return $this->save($model);
});
}
/**
* @param Model $model
* @return bool
*/
private function save(Model $model): bool
{
if (!$model->save()) {
return false;
}
foreach ($model->getRelations() as $relationName => $models) {
$models = array_filter(
$models instanceof Collection ? $models->all() : [$models]
);
$relation = $model->{$relationName}();
if ($relation instanceof BelongsTo) {
if (!$this->persistBelongsTo($relation, $models)) {
return false;
}
}
if ($relation instanceof BelongsToMany) {
if (!$this->persistBelongsToMany($relation, $models)) {
return false;
}
}
}
// We need to save the model again to
// make sure all updates are performed.
$model->save();
return true;
}
/**
* @param BelongsTo $relation
* @param array $models
* @return bool
*/
private function persistBelongsTo(BelongsTo $relation, array $models): bool
{
// With belongs to, we first need to save all relations,
// so we can use their foreign key to attach to the relation.
foreach ($models as $model) {
// Cascade any relations that this child model may have.
if (!$this->save($model)) {
return false;
}
$relation->associate($model);
}
return true;
}
/**
* @param BelongsToMany $relation
* @param array $models
* @return bool
*/
private function persistBelongsToMany(BelongsToMany $relation, array $models): bool
{
foreach ($models as $model) {
$relation->save($model);
// Cascade any relations that this child model may have.
if (!$this->save($model)) {
return false;
}
}
return true;
}
}
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