Relationship 1-n multiple BACKPACK Laravel-CodePudding

I use backpack 5 Pro on last laravel.

I would like to select several data, save them in the database and retrieve them.

I have two tables :

products - id, name

articles - id, title, products_id

In my model Articles.php :

public function produit()
{
    return $this->belongsTo('App\Models\Products', 'products_id', 'id');
}

In my controller ArticlesCrudController.php :

        $this->crud->addField(
            [
                'label'     => "Products Links",
                'type'      => 'relationship',
                'name'      => 'produit', 
                'entity'    => 'produit', 
                'model'     => "App\Models\Products",
                'attribute' => 'product_name', 
                'allows_null' => true,
                'multiple'     => true, <--- WANT MULTIPLE SELECT
                'tab' => 'Products links',
                'options'   => (function ($query) {
                            return $query->orderBy('product_name', 'ASC')->get();
                }),
            ]
        );

In my Database :

products_id contains : ["15","18"]

Everything works fine except in my results list. It only shows me one result (id : 15) instead of two or more... (15 and 18).

CodePudding user response：

This is not how you can make such relation, you can store only one value within product_id.

Based on your structure, your Product can have multiple Articles, so create two lines (two records in DB) in your articles:

Consider this pseudo code:

$article1 = [
   'id' => 1,
   'title' => 'Article 1',
   'product_id' => 15
];

$article2 = [
   'id' => 1,
   'title' => 'Article 1',
   'product_id' => 15
]

Now Product with ID of 15 has 2 articles (1 and 2).

If you want your Article to have multiple Products and vice-versa then create Many to many relation