Question

我一直试图发现当前是否可以执行以下操作。

基本上，我有三个模型：Customer，Invoice和Unit。 （{Customer 有一个 Invoice；一个Invoice 有很多 Unit个）。

我想知道是否可以无缝执行以下操作：

...

# Let's pretend that further up the code that
# Customer has all the properties set and now
# being saved in the database.

$Customer->save();

# This is currently trying set the values of
# 'units' to a non-existent table column in 
# 'invoices' table.

$Customer->invoice()->create([
    "units" => [
        [
            "name" => "Unit 1",
            "amount" => 999.99,
            "tax" => "20%",
            "type" => "+"
        ]
    ]
]);

Answer 1

如果按照描述的方式在模型中设置关系，则可以按照所显示的方式实现它。像这样：

Customer

public function invoice()
{
    return $this->hasOne(Invoice::class);
}

Invoice

public function units()
{
    return $this->hasMany(Unit::class);
}

然后致电：

$customer->invoice()->units()->create([
            "name" => "Unit 1",
            "amount" => 999.99,
            "tax" => "20%",
            "type" => "+"
        ]);

应该工作。

在Laravel中创建嵌套关系

1 个答案: