Question

我有三个表，它们是：

联系人

contact_name
contact_email
contact_phone

位置

location_name
location_country

关联联系人

association_contact_id
association_contacts_id
contacts_type

在我的模型中，我设置了Polymorphs ...

AssociationContact

public function contact()
{
    return $this->morphTo();
}

客户

public function contact()
{
    return $this->morphToMany(
    // the related model
        'App\Models\AssociationContact',
        // the relationship name
        'contact',

        // the table name, which would otherwise be derived from the relationship name - twowordables
        'association_contacts',

        // the foreign key will be twowordable_id, derived from the relationship name, which you're adhering to
        'association_contact_id',

        // the 'other' key, which would otherwise be derived from the related model's snake case name - two_word_id
        'association_contacts_id'
    );
}

运行以下代码时：

$clients = Client::all();
foreach($clients as $client)
{
  echo "<pre>";
  print_r($client->contact);
  echo "</pre>";
}

我收到以下错误：

Syntax error or access violation: 1066 Not unique table/alias: 'association_contacts' (SQL: select `association_contacts`.*, `association_contacts`.`association_contact_id` as `pivot_association_contact_id`, `association_contacts`.`association_contacts_id` as `pivot_association_contacts_id`, `association_contacts`.`contact_type` as `pivot_contact_type` from `association_contacts` inner join `association_contacts` on `association_contacts`.`id` = `association_contacts`.`association_contacts_id` where `association_contacts`.`association_contact_id` = 7 and `association_contacts`.`contact_type` = App\Models\Client)

这一定是我建立模型关系的方式，但是不确定我做错了什么。

欢呼

Answer 1

将此内容放入 AssociationContact ：

public function contact()
{
    return $this->morphTo(null,'contacts_type','association_contacts_id');
}

将您的客户表中的关系更改为此：

public function contact()
{
     return $this->morphMany('App\Models\Contact','contact','contacts_type','association_contacts_id');
    }

这应该有效。

Laravel-关于多态关系的表/别名不是唯一的

1 个答案: