嵌套 Eloquent 关系 - HasOneThrough 问题

Question

我为 table 设置了以下设置：

Product_variant Table

Product_variant -> id, name, code, image

Warehouse table

Warehouse -> id, name, address

Product Variant Stock table

Product_Variant_stock -> stock_id, warehouse_id, variant_id, stock_qty

现在，当我尝试访问产品变体信息时，我需要获取有关仓库变体存储的信息。

我在 ProductVariation 模型中尝试过的内容：

public function warehouseName()
{
    return $this->hasOneThrough(Warehouse::class, ProductVariantStock::class, 'warehouse_id', 'id');
}

以上未按预期工作。感谢任何帮助。

Answer 1

laravel hasOneThrough 是这样工作的

class ModelA extends Model
{
    ...
    
    public function cModel()
    {
        return $this->hasOneThrough(
            ModelC::class,
            ModelB::class,
            'model_a_id', // Key on B that relates to A
            'model_c_id', // Key on C that relates to B
            'a_id',       // Key on A that relates to B
            'b_id',       // Key on B that relates to C
        );
    }
}

因此您的代码将是

public function warehouseName()
{
    return $this->hasOneThrough(Warehouse::class, ProductVariantStock::class, 'variant_id', 'id', 'id', 'warehouse_id');
}

嵌套 Eloquent 关系 - HasOneThrough 问题

Nested Eloquent Relation - HasOneThrough Issue

eloquent

laravel-7

eloquent-relationship