php - 如何加载多级关系？

Question

我正在尝试在 3 个相关表中搜索如下 contracts belongsTo -> company hasMany -> company_addresses。我想在契约(Contract) View 中显示 company_addresses 数据。

contracts
    id – integer
    company_id - integer
    title – string 

companies
    id - integer
    name – string

company_addresses
    id - integer
    company_id - integer
    address – string
    complement – string
    contact– string

契约(Contract)范本

public function company()
{
    return $this->belongsTo(Company::class, 'company_id', 'id');
}

模型公司

public function contracts ()
{
    return $this->hasMany(Contract::class);
} 
public function addresses()
{
    return $this->hasMany(CompanyAddress::class);
}

模型公司地址

public function company()
{
    return $this->belongsTo(Company::class);
}

代码合约 Controller

 public function index()
 {
     $contract= Contract::with('companies.company_addresses')->get();
     return view(‘contract.view')->with(compact('contract'));
 }

那么我做错了什么，我该如何解决呢？任何帮助都是非常有效的。

Answer 1

你生错 child 了。改变这个:

$contract= Contract::with('companies.company_addresses')->get();

对此

$contract= Contract::with('company.addresses')->get();