将数据库关系更改为 Laravel eloquent

Question

我尝试了三天将这种关系从 Laravel query_builder 转移到 Laravel eqloquent。但是看起来没用:

$category_products = DB::table('products')
            ->Join('categories', 'products.category_id', '=', 'categories.id')
            ->select('products.*', 'categories.CategoryEnName')
            ->where('categories.parent_id', '=', '2')
            ->get();

上面的代码运行良好，但不适用于 laravel "pagination"，如下所示：

$category_products = DB::table('products')
                ->Join('categories', 'products.category_id', '=', 'categories.id')
                ->select('products.*', 'categories.CategoryEnName')
                ->where('categories.parent_id', '=', '2')
                ->get()->paginate(15);

这是我的类别模型：

class Category extends Model
{
    protected $guarded = ['id'];

    //For the nested "tree like" categories
    public function parent()
    {
        return $this->belongsTo('App\Category', 'parent_id');
    }

    //For the nested "tree like" categories
    public function children()
    {
        return $this->hasMany('App\Category', 'parent_id');
    }


    /**
    *
    *Grab all the products belong to this category
    *
    */
    public function products()
    {
        return $this->hasMany('App\Product');
    }

我想要的是如何将代码从查询生成器更改为 Laravel eloquent?

Answer 1

如果使用paginate()，则不需要get()

将数据库关系更改为 Laravel eloquent

Changing a database relationship to Laravel eloquent

mysql

relationship

eloquent

laravel-5.3