Question

在Laravel中建立三重关系的正确方法是什么。我正在使用Laravel的最新版本。

我需要建立品牌/类别/产品关系。

我的桌子是这样的：

Table brands = id - name - slug
Table categories = id - name - slug
Table brand_category = brand_id (foreign key) - category_id (foreign key)
Table products = id - name - slug - brand_id (foreign key) - category_id (foreign key)

需要正确执行：品牌可以有很多类别，反之亦然。品牌和类别也有许多产品。产品通过外键属于品牌和类别。在他们之间建立联系的最好方法是什么？我在这里发布是因为双重的双重关系听起来很奇怪。 Hasmanythrough看起来不错，但我不介意如何涵盖这种关系。

型号：

Brand.php

 class Brand extends Model
{
    // Table Name
    protected $table = 'brands';

    // Primary Key
    public $primaryKey = 'id';

    // Timestamps
    public $timestamps = true;

    /**
     * The category that belong to the brand.
     */
    public function categories()
    {
        return $this->belongsToMany('App\Category');
    }

    /**
     * Brand has many products.
     */
    public function products()
    {
        return $this->hasMany('App\Product');
    }
}

Category.php

 class Category extends Model
{
     // Table Name
    protected $table = 'categories';

    /**
     * The brand that belongs to the category.
    */
    public function brands()
    {
        return $this->belongsToMany('App\Brand');
    }

    /**
     * The category has many products.
     */
    public function products()
    {
        return $this->hasMany('App\Product');
    }

}

Product.php

class Product extends Model
{
    //Table Name
    protected $table = 'products';

    /**
     * The product that belongs to the brand.
    */
    public function brands()
    {
        return $this->belongsTo('App\Brand');
    }

     /**
     * The product that belongs to the category.
    */
    public function categories()
    {
        return $this->belongsTo('App\Category');
    }
}

Laravel三重关系

0 个答案: