in laravel 8 with seeding , i has this issue Target class [TableSeeder] does not exist

问题

Illuminate\Contracts\Container\BindingResolutionException

  Target class [Database\Seeders\CountriesTableSeeder] does not exist.

  at C:\......\blog\vendor\laravel\framework\src\Illuminate\Container\Container.php:811
    807▕
    808▕         try {
    809▕             $reflector = new ReflectionClass($concrete);
    810▕         } catch (ReflectionException $e) {
  ➜ 811▕             throw new BindingResolutionException("Target class [$concrete] does not exist.", 0, $e);
    812▕         }
    813▕
    814▕         // If the type is not instantiable, the developer is attempting to resolve
    815▕         // an abstract type such as an Interface or Abstract Class and there is

  1   C:\......\blog\vendor\laravel\framework\src\Illuminate\Container\Container.php:809
      ReflectionException::("Class Database\Seeders\CountriesTableSeeder does not exist")

  2   C:\......\blog\vendor\laravel\framework\src\Illuminate\Container\Container.php:809
      ReflectionClass::__construct("Database\Seeders\CountriesTableSeeder")

回答1:

From laravel 8 Seeders and factories are now namespaced

To accommodate for these changes, add Database\Seeders namespace to your seeder classes.

namespace Database\Seeders;

In addition, move all seeder files from previous database/seeds directory to database/seeders folder.

In your case remove all lines started with 'use Database\Seeders\ ...' from DatabaseSeeder.php file

It should solve the issue,

You can also run dump-autoload & fresh migration with seed,

composer dump-autoload

php artisan migrate:fresh --seed

回答2:

For Laravel 8 you need to make below changes for Seeding to work :-

Add Database\Seeders namespace at top of DatabaseSeeder.php and other Seeder files :-
```
namespace Database\Seeders;
```
Replace folder name seeds to seeders located at \database\ folder.
Update composer.json like below:

"autoload": {
    "psr-4": {
        "App\\": "app/",
        "Database\\Factories\\": "database/factories/",
        "Database\\Seeders\\": "database/seeders/"
    }
},

Finally, run below commands :-

composer dump-autoload

php artisan db:seed

Hope it will help someone in future!

回答3:

After running: composer dump:autoload

I could just include the below code in my DatabaseSeeder and It would include the data from SubsidyregimeTableSeeder

$this->call([
   SubsidyregimeTableSeeder::class
]);

回答4:

DatabaseSeeder.php

<?php

namespace Database\Seeders;

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

class DatabaseSeeder extends Seeder
{
    /**
     * Seed the application's database.
     *
     * @return void
     */
    public function run()
    {
        $this->call([
            CountriesTableSeeder::class,
            ProvincesTableSeeder::class,
            RegionsTableSeeder::class,
            PermisionsTableSeeder::class,
            RolesTableSeeder::class,
            StatusTypesTableSeeder::class,
            StatusesTableSeeder::class,
            ]);
    }
}

CountriesTableSeeder.php

<?php

use App\Country;
use Illuminate\Database\Seeder;
use Illuminate\Support\Facades\DB;
use Illuminate\Database\Eloquent\Model; 

class CountriesTableSeeder extends Seeder
{
    private $numberOfCountries = 10;

    /**
     * Run the database seeds.
     *
     * @return void
     */
    public function run()
    {
        DB::table('countries')->insert([
            ['country_name' => 'iraq'],
            ['country_name' => 'qater'],
        ]);
    }
}

来源：https://stackoverflow.com/questions/64116559/in-laravel-8-with-seeding-i-has-this-issue-target-class-tableseeder-does-not

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php

laravel