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：<?phpnamespace 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：

$role = allowTo($ability);

虽然你应该像这样使用它：

$role->allowTo($ability);

并在你的方法中：

public function allowTo($ability) { 
   $this->abilities()->attach($ability->id);
}