Laravel 5 - 工匠种子 [ReflectionException] 类 SongsTableSeeder 不存在

Laravel 5 - artisan seed [ReflectionException] Class SongsTableSeeder does not exist

提问by Sasha

When I run php artisan db:seedI am getting the following error:

当我运行php artisan db:seed时，出现以下错误：

[ReflectionException] Class SongsTableSeeder does not exist

What is going on?

到底是怎么回事？

My DatabaseSeeder class:

我的DatabaseSeeder 类：

<?php

use Illuminate\Database\Seeder;
use Illuminate\Database\Eloquent\Model;

class DatabaseSeeder extends Seeder {

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

        $this->call('SongsTableSeeder');
    }

}

My SongsTableSeeder class:

我的SongsTableSeeder 类：

<?php

// Composer: "fzaninotto/faker": "v1.4.0"
use Faker\Factory as Faker;
use Illuminate\Database\Seeder;
use DB;

class SongsTableSeeder extends Seeder {

    public function run()
    {
        $faker = Faker::create();
        $songs = [];
        foreach(range(1, 10) as $index)
        {
            $songs[] = ['title' => $faker->words(rand(1,4))];
        }

        DB::table('songs')->insert($songs);

    }

}

回答by Marcin Nabia?ek

You need to put SongsTableSeederinto file SongsTableSeeder.phpin the same directory where you have your DatabaseSeeder.phpfile.

您需要将SongsTableSeeder文件放入文件SongsTableSeeder.php所在的同一目录中DatabaseSeeder.php。

And you need to run in your console:

你需要在你的控制台中运行：

composer dump-autoload

to generate new class map and then run:

生成新的类映射，然后运行：

php artisan db:seed

I've just tested it. It is working without a problem in Laravel 5

我刚刚测试过了。它在 Laravel 5 中没有问题

回答by Ron van Asseldonk

I solved it by doing this:

我通过这样做解决了它：

1. Copy the file content.
2. Remove file.
3. Run command: php artisan make:seeder .
4. Copy the file content back in this file.

1. 复制文件内容。
2. 删除文件。
3. 运行命令： php artisan make:seder 。
4. 将文件内容复制回此文件中。

This happened because I made a change in the filename. I don't know why it didn't work after the change.

发生这种情况是因为我更改了文件名。我不知道为什么它在更改后不起作用。

回答by simhumileco

File SongsTableSeeder.phpshould be in database/seedsdirectory or in its subdirectory.

文件SongsTableSeeder.php应位于database/seeds目录或其子目录中。

You need to run:

你需要运行：

composer dump-autoload

and then:

进而：

php artisan db:seed

or:

或者：

php artisan db:seed --class=SongsTableSeeder

回答by Chandrakant Ganji

SongsTableSeeder.php should be in database/seeds directory

SongsTableSeeder.php 应该在 database/seeds 目录中

Console command steps:

控制台命令步骤：

composer dump-autoload

and then:

进而：

php artisan cache:clear

and then:

进而：

php artisan optimize

and then:

进而：

php artisan db:seed

or:

或者：

php artisan db:seed --class=SongsTableSeeder

回答by abenevaut

Do not forgot that the composer dump-autoloadworks in relation with the autoload / classmap section of composer.json. Take care about that if you need to change seeders directory or use multiple directories to store seeders.

不要忘记composer dump-autoload与composer.json. 如果您需要更改播种机目录或使用多个目录来存储播种机，请注意这一点。

"autoload": {
    "classmap": [
      "database/seeds",
      "database/factories"
    ],
},

回答by Jason

I'm running the very latest Laravel 5 dev release, and if you've changed the namespace you'll need to call your seed class like this:

我正在运行最新的 Laravel 5 开发版本，如果您更改了命名空间，则需要像这样调用您的种子类：

$this->call('\todoparrot\TodolistTableSeeder');

Obviously you'll need to replace todoparrotwith your designated namespace. Otherwise I receive the same error indicated in the original question.

显然，您需要替换todoparrot为您指定的命名空间。否则，我会收到原始问题中指出的相同错误。

回答by ivahidmontazer

If our CustomTableSeeder is in same directory with DatabaseSeeder we should use like below:

如果我们的 CustomTableSeeder 与 DatabaseSeeder 在同一目录中，我们应该使用如下：

$this->call('database\seeds\CustomTableSeeder');

in our DatabaseSeeder File; then another error will be thrown that says: 'DB Class not found' then we should add our DB facade to our CustomTableSeeder File like below:

在我们的 DatabaseSeeder 文件中；然后将抛出另一个错误，内容为：'DB Class not found' 然后我们应该将我们的 DB Facade 添加到我们的 CustomTableSeeder 文件中，如下所示：

use Illuminate\Support\Facades\DB;

it worked for me!

它对我有用！

回答by Vinod Joshi

I have used only SINGLE FILE with TWO classes in it following :

我只使用了以下两个类的单个文件：

use Illuminate\Database\Seeder;
use Illuminate\Database\Eloquent\Model;
use App\Lesson;

use Faker\Factory as Faker;

class DatabaseSeeder extends Seeder {

/**
 * Run the database seeds.
 *
 * @return void
 */
public function run()
{
    //Lesson::truncate();

    Model::unguard();

    $this->call("LessonsTableSeeder");


}

}

class LessonsTableSeeder extends Seeder {

/**
 * Run the database seeds.
 *
 * @return void
 */
public function run()
{

    $faker = Faker::create();

    foreach(range(1,30) as $index) {

        Lesson::create(['title' => $faker->sentence(5), 'body' => $faker->paragraph(4)]);

    }

}

}

回答by Shahid Hussain

If you have copied the seeders files from any other project then you need to run the artisan command php artisan db:seedotherwise it is fine.

如果您已经从任何其他项目复制了播种机文件，那么您需要运行 artisan 命令，php artisan db:seed否则就可以了。

回答by gerald heng

i got [ReflectionException] Class Seeder does not existtoo and when i use composer dump-autoload, i got an error preg_match(): JIT compilation failed: no more memorywhen i run it.

我也得到[ReflectionException] Class Seeder does not exist了，当我使用时composer dump-autoload，preg_match(): JIT compilation failed: no more memory运行它时出现错误。

What i did is that i change ;pcre.jit=1to pcre.jit=Offin php.ini! You can find the path by using php --iniin your terminal!

我所做的是我换;pcre.jit=1到pcre.jit=Off在php.ini中！您可以php --ini在终端中使用找到路径！

I am using mac with php 7.3! Hope that help any of you guys out there!

我正在使用带有 php 7.3 的 mac！希望对各位大侠有所帮助！