PHP 致命错误：调用未定义的函数 Laravel Tinker

Question

我试图在两个表（角色和能力）之间建立关系，但是当我运行该函数时，allowTo()它说 is undefined。我尝试清除缓存和配置，但没有执行任何操作。如果有人能提供帮助那就太好了，谢谢！

型号：

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

class Role extends Model

{

    

protected $guarded = [];

    public function abilities(){

        return $this->belongsToMany(Ability::class)->withTimestamps();

    }

   public function allowTo($ability){

        $this->abilities()->save($ability);

   }

shell 上的 Tinker 环境：

>>> $user = App\User::find(7);

=> App\User {#3044

     id: 7,

     name: "Rebeca Tejedor",

     email: "[e-mail]",

     email_verified_at: null,

     created_at: "2020-08-13 10:29:46",

     updated_at: "2020-08-13 10:29:46",

   }

>>> $role = Role::firstOrCreate(['name'=> 'lender']);

[!] Aliasing 'Role' to 'App\Role' for this Tinker session.

=> App\Role {#3041

     id: 1,

     name: "lender",

     created_at: "2020-08-13 10:41:15",

     updated_at: "2020-08-13 10:41:15",

   }

>>> $ability = Ability::firstOrCreate(['name'=> 'edit_items']);

[!] Aliasing 'Ability' to 'App\Ability' for this Tinker session.

=> App\Ability {#3040

     id: 1,

     name: "edit_items",

     created_at: "2020-08-13 10:43:34",

     updated_at: "2020-08-13 10:43:34",

   }

>>> $role = allowTo($ability)

错误：

PHP Fatal error:  Call to undefined function allowTo() in Psy Shell code on line 1

该模型

修补匠环境

Answer 1

您以这种方式使用您的关系：$role&nbsp;=&nbsp;allowTo($ability);虽然你应该像这样使用它：$role->allowTo($ability);并在你的方法中：public&nbsp;function&nbsp;allowTo($ability)&nbsp;{&nbsp; &nbsp;&nbsp;&nbsp;$this->abilities()->attach($ability->id); }