Question

我已经签出，类PermissionsTableSeeder通过以下路径存在：Database\Seeds\PermissionsTableSeeder。

我也尝试过：

composer dump-autoload

php artisan cache:clear

当我运行命令：php artisan db:seed时，它给了我一个例外：

ReflectionException：类数据库\种子\ PermissionsTableSeeder   不存在
     在
  C：\ Projects \ secure_secure \ vendor \ laravel \ framework \ src \ Illuminate \ Container \ Container.php：790       786 | if（$ concrete instanceof Closure）{       787 |返回$ concrete（$ this，$ this-> getLastParameterOverride（））;       788 | }       789 |


790 | $ reflector = new ReflectionClass（$ concrete）;         791 |         792 | //如果类型不可实例化，则开发人员正在尝试解析         793 | //抽象类型，例如Interface或Abstract Class，         794 | //没有为抽象注册任何绑定，因此我们需要纾困。


异常跟踪：

1
  ReflectionClass :: __ construct（“ Database \ Seeds \ PermissionsTableSeeder”）         C：\ Projects \ secure_secure \ vendor \ laravel \ framework \ src \ Illuminate \ Container \ Container.php：790

2
  Illuminate \ Container \ Container :: build（“ Database \ Seeds \ PermissionsTableSeeder”）         C：\ Projects \ secure_secure \ vendor \ laravel \ framework \ src \ Illuminate \ Container \ Container.php：667

如何解决？

Answer 1

laravel中没有Database\Seeds\ 命名空间，默认情况下，种子节点没有命名空间。

请检查DatabaseSeeder.php您应该具有此功能：

public function run()
{
    .....
    $this->call(PermissionsTableSeeder::class);
}

还要检查您是否没有为DatabaseSeeder类或PermissionsTableSeeder类赋予任何命名空间。

您还应该删除use Database\Seeds中以DatabaseSeeder.php开头的任何行，因为该命名空间不存在。

Answer 2

我更改了database/seeds/DatabaseSeeder.php

<?php

use Illuminate\Database\Seeder;
use Illuminate\Database\Eloquent\Model;
use Database\Seeds\PermissionsTableSeeder;
use Database\Seeds\RolesTableSeeder;
use Database\Seeds\ConnectRelationshipsSeeder;

class DatabaseSeeder extends Seeder
{
    /**
     * Run the database seeds.
     *
     * @return void
     */
    public function run()
    {
        Model::unguard();

            $this->call(PermissionsTableSeeder::class);
            $this->call(RolesTableSeeder::class);
            $this->call(ConnectRelationshipsSeeder::class);
            //$this->call('UsersTableSeeder');

        Model::reguard();
    }
}

到

<?php

use Illuminate\Database\Seeder;
use Illuminate\Database\Eloquent\Model;
use Database\Seeds\PermissionsTableSeeder;
use Database\Seeds\RolesTableSeeder;
use Database\Seeds\ConnectRelationshipsSeeder;

class DatabaseSeeder extends Seeder
{
    /**
     * Run the database seeds.
     *
     * @return void
     */
    public function run()
    {
        Model::unguard();

            $this->call('PermissionsTableSeeder');
            $this->call('RolesTableSeeder');
            $this->call('ConnectRelationshipsSeeder');
            //$this->call('UsersTableSeeder');

        Model::reguard();
    }
}

这解决了我的错误

php artisan db:seed
    Seeding: DefaultPermissionitemsTableSeeder
Seeding: DefaultRoleItemsTableSeeder
Seeding: DefaultConnectRelationshipsSeeder
Seeding: DefaultConnectRelationshipsSeeder - Role:Admin attached to Permission:view.users
Seeding: DefaultConnectRelationshipsSeeder - Role:Admin attached to Permission:create.users
Seeding: DefaultConnectRelationshipsSeeder - Role:Admin attached to Permission:edit.users
Seeding: DefaultConnectRelationshipsSeeder - Role:Admin attached to Permission:delete.users
Seeding: PermissionsTableSeeder

   ReflectionException  : Class Database\Seeds\RolesTableSeeder does not exist

  at D:\Work\Coding\Laravel\Epox\vendor\laravel\framework\src\Illuminate\Container\Container.php:788
    784|         if ($concrete instanceof Closure) {
    785|             return $concrete($this, $this->getLastParameterOverride());
    786|         }
    787|
  > 788|         $reflector = new ReflectionClass($concrete);
    789|
    790|         // If the type is not instantiable, the developer is attempting to resolve
    791|         // an abstract type such as an Interface or Abstract Class and there is
    792|         // no binding registered for the abstractions so we need to bail out.

  Exception trace:

  1   ReflectionClass::__construct("Database\Seeds\RolesTableSeeder")
      D:\Work\Coding\Laravel\Epox\vendor\laravel\framework\src\Illuminate\Container\Container.php:788

  2   Illuminate\Container\Container::build("Database\Seeds\RolesTableSeeder")
      D:\Work\Coding\Laravel\Epox\vendor\laravel\framework\src\Illuminate\Container\Container.php:667

  Please use the argument -v to see more details.

到

php artisan db:seed
    Seeding: DefaultPermissionitemsTableSeeder
Seeding: DefaultRoleItemsTableSeeder
Seeding: DefaultConnectRelationshipsSeeder
Seeding: DefaultConnectRelationshipsSeeder - Role:Admin attached to Permission:view.users
Seeding: DefaultConnectRelationshipsSeeder - Role:Admin attached to Permission:create.users
Seeding: DefaultConnectRelationshipsSeeder - Role:Admin attached to Permission:edit.users
Seeding: DefaultConnectRelationshipsSeeder - Role:Admin attached to Permission:delete.users
Seeding: PermissionsTableSeeder
Seeding: RolesTableSeeder
Seeding: ConnectRelationshipsSeeder

php artisan --version
    Laravel Framework 5.8.36

类Database \ Seeds \ PermissionsTableSeeder不存在

2 个答案: