Octobercms onSave 更新其他模型

Question

我需要在保存贷款时更新模型关系中书籍的 status 字段，但它不起作用。

我的代码

class Lending extends Model
{

/**
 * @var string The database table used by the model.
 */
public $table = 'ribsousa_library_lendings';

/*
 * Relations
 */
public $belongsToMany = [
    'books' => [
        'Ribsousa\Library\Models\Book',
        'table' =>  'ribsousa_library_lendings_books',
        'order'      => 'title desc'
    ]
];

public function afterSave()
{

    $this->book->status = 1;
    $this->book->save();

}
}

错误：

`"Indirect modification of overloaded property Ribsousa\Library\Models\Lending::$book has no effect" on line 95 of C:\wamp64\www\iepm.dev\plugins\ribsousa\library\models\Lending.php`

Answer 1

我试过这个 code 和 its working fine 你能试试这个吗。

它在我的 model which model I am saving 里面，所以当 saving is done 我在 updating related demo model's status 字段并且看起来 its working.

public $belongsTo = [
    'demo' => 'HardikSatasiya\DemoTest\Models\Demo',
    'user' => 'RainLab\User\Models\User'
];

/**
 * @var string The database table used by the model.
 */
public $table = 'hardiksatasiya_demotest_relation';

public function afterSave() {
    $this->demo->status = 1;
    $this->demo->save();
}

更新

看来你有 更新的答案 和它的关系 is Many to Many 所以现在我有 no proper solution 一次更新多条记录，因为集合update方法没有生成proper query structure所以它抛出错误collection update.

但是我有其他解决方案 can fire multiple queries 但目前 seems working solution for your issue.

你的关系是 belongsToMany 所以我们需要不同的方法。

public function afterSave() {
    $this->books()->each(function($book) {
        $book->update(['status' => 1]);
        // if you get mass assign error -use this
        // $book->status = 1;
        // $book->save();

    });     
}

Make sure your Book model don't have any afterSave logic and if it has then just make sure it don't update your parent model in your case Lending, as it will call infinite loop.

请试试这个并告诉我们。

Octobercms onSave 更新其他模型

Octobercms onSave update other model

model

relation

octobercms

更新