[英]Laravel Eloquent ORM replicate
我在使用所有关系复制我的一个模型时遇到问题。
数据库结构如下:
Table1: products
id
name
Table2: product_options
id
product_id
option
Table3: categories
id
name
Pivot table: product_categories
product_id
category_id
关系是:
我想克隆一个包含所有关系的产品。 目前这是我的代码:
$product = Product::with('options')->find($id);
$new_product = $product->replicate();
$new_product->push();
foreach($product->options as $option){
$new_option = $option->replicate();
$new_option->product_id = $new_product->id;
$new_option->push();
}
但这不起作用(关系没有被克隆 - 目前我只是试图克隆product_options)。
这段代码对我有用:
$model = User::find($id);
$model->load('invoices');
$newModel = $model->replicate();
$newModel->push();
foreach($model->getRelations() as $relation => $items){
foreach($items as $item){
unset($item->id);
$newModel->{$relation}()->create($item->toArray());
}
}
从这里回答: 克隆一个包含所有关系的雄辩对象?
这个答案(同样的问题),也可以正常工作。
//copy attributes from original model
$newRecord = $original->replicate();
// Reset any fields needed to connect to another parent, etc
$newRecord->some_id = $otherParent->id;
//save model before you recreate relations (so it has an id)
$newRecord->push();
//reset relations on EXISTING MODEL (this way you can control which ones will be loaded
$original->relations = [];
//load relations on EXISTING MODEL
$original->load('somerelationship', 'anotherrelationship');
//re-sync the child relationships
$relations = $original->getRelations();
foreach ($relations as $relation) {
foreach ($relation as $relationRecord) {
$newRelationship = $relationRecord->replicate();
$newRelationship->some_parent_id = $newRecord->id;
$newRelationship->push();
}
}
从这里: 克隆一个包含所有关系的雄辩对象?
根据我的经验,代码适用于多对多的关系。
尝试使用attach
来创建关系:
foreach($product->options as $option){
$new_option = $option->replicate();
$new_option->save();
$new_option_id = $new_option->id;
$new_product->options()->attach($new_option_id);
}
$product = Product::with('options')->find($id);
$new_product = $product->replicate();
$new_product->{attribute} = {value};
$new_product->push();
$new_product->options()->saveMany($product->options);
这在5.5上工作正常。 图像,媒体是一个关系名称。
$event = Events::with('image','media')->find($event_id);
if($event){
$newevent = $event->replicate();
$newevent->push();
foreach ($newevent->getRelations() as $relation => $entries)
{
foreach($entries as $entry)
{
$e = $entry->replicate();
if ($e->push())
{
$newevent->{$relation}()->save($e);
}
}
}
}
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