如何在Laravel 5.4中播种透视表? [英] How to seed pivot table in Laravel 5.4?

问题描述

我正在关注Jeffrey Way的laracast中称为Incremental API的教程.

I am following a tutorial called Incremental API in laracasts by Jeffrey Way.

Laravel 4伪造者类种子和laravel 5.4之间有不同的编码.

There is a different coding between Laravel 4 faker class seeding and laravel 5.4.

我仍然遵循教程"Seeders Reloaded"中的相同代码行.现在，我受困于"Class LessonTagTableSeeder不存在"

I still followed the same code lines from the tutorials "Seeders Reloaded". Now, I am stuck with "Class LessonTagTableSeeder does not exist"

TagTableSeeder

TagTableSeeder

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

        $faker = Faker::create('App\Tag');

        for($i=1; $i <= 10; $i++) {

            DB::table('tags')->insert([
                'name' => $faker->word,
                'created_at' => \Carbon\Carbon::now(),
                'updated_at' => \Carbon\Carbon::now(),

            ]);


        }


    }

LessonTagTableSeeder

LessonTagTableSeeder

use Illuminate\Database\Seeder;
use Faker\Factory as Faker;
use App\Lesson;
use App\Tag;

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

        $faker = Faker::create();

        $lessonIds = Lesson::pluck('id')->all();
        $tagIds = Tag::pluck('id')->all();

        for($i=1; $i <= 30; $i++) {

            DB::table('lesson_tag')->insert([
                'lesson_id' => $faker->randomElement($lessonIds),
                'tag_id' => $faker->randomElement($tagIds)
            ]);


        }


    }

DatabaseSeeder

DatabaseSeeder

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

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

        DB::statement('SET FOREIGN_KEY_CHECKS=0');
        Lesson::truncate();
        Tag::truncate();
        DB::table('lesson_tag')->truncate();

        Model::unguard();

        $this->call('LessonsTableSeeder');
        $this->call('TagsTableSeeder');
        $this->call('LessonTagTableSeeder');

        DB::statement('SET FOREIGN_KEY_CHECKS=1');

    }

我能够用 php artisan db:seed --class = TagsTableSeeder

当我运行"php artisan db:seed --class = LessonTagTableSeeder"时，系统提示我:

When i run "php artisan db:seed --class=LessonTagTableSeeder" , i am prompted with:

[ReflectionException]类LessonTagTableSeeder不存在

您知道如何编辑上面的代码吗?感谢您的帮助

Do you have any idea how to edit the code above? Any help is appreciated

推荐答案

运行此命令，然后重试

composer dump-autoload -o

composer dump-autoload -o

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