设置hasOne与子模型的新实例的关系 [英] Set hasOne relation to new instance of child model
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问题描述
使用Laravel 4.2,如何在不接触数据库的情况下将模型上的hasOne关系设置为新模型的实例?
Using Laravel 4.2, how can I set a hasOne relation on a model to an instance of a new model without touching the database?
我想执行以下操作,但是Laravel将实例视为属性,而不是子关系.
I want to do the following, but Laravel is treating the instance as a property, not a child relation.
class ParentClass extends \Eloquent {
public function child() {
return $this-hasOne('ChildClass', 'child_id', 'parent_id');
}
}
$parent = new ParentClass();
$parent->child = new ChildClass();
推荐答案
为解决我的问题,我创建了一个Trait类,该类已添加到模型中,从而可以设置关系.这样做不会自动设置我的父/子关系值,因此在保存/推送之前,我必须小心手动进行此操作.
To get through my problem, I have created a Trait class that I added to my models that allows me to set a relation. Doing this does not automatically set my parent/child relation values so I have to be careful to do this manually before I save/push.
trait ModelSetRelationTrait
{
public function setRelation($key, $model)
{
$this->relations[$key] = $model;
}
}
class ParentClass extends \Eloquent {
use ModelSetRelationTrait;
public function child() {
return $this-hasOne('ChildClass', 'child_id', 'parent_id');
}
}
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