LARAVEL 8: Class 'Database\Seeders\DB' not found

Question

I'm working with seeder to fill my users table, so I created a new seeder called UserSeeder and then I added these codes to it:

public function run()
{
    foreach(range(1,10) as $item)
    {
        DB::table('users')->insert([
            'name' => "name $item",
            'email' => "email $item",
            'email_verified_at' => now(),
            'password' => "password $item" 
        ]);
    }
}

After that I tried php artisan db:seed --class=UserSeeder but it shows me:

Error

Class 'Database\Seeders\DB' not found

which is related to this line:

DB::table('users')->insert([

So why it is not found there, what should I do now?

Solution 1

That's because Laravel will look for DB class in the current namespace which is Database\Seeders.

Since Laravel has facades defined in config/app.php which allows you to use those classes without full class name.

    'DB' => Illuminate\Support\Facades\DB::class,

You can either declare DB class after the namespace declaration with

use DB;

or just use it with backslash.

    \DB::table('users')->insert([

Solution 2

In the UserSeeder Class add:

use Illuminate\Support\Facades\DB;

Comments

[lagbox]

namespacing, you would have to import/alias the DB class to use it in that file like that

[Admin]

@lagbox Would you please tell me where is it and what should I write?

[lagbox]

use DB; after the namespace declaration

[Tohid Dadashnezhad]

I had this problem too and I solved this issue by running composer dump-autoload after creating a new seeder class or changing its namespace.

[The Only Smart Boy]

The declaration approach is always the recommended option as it allows you to use the object / class as many times as you want while calling the full class path and name every time you want to use causes a lot of confusion and may be difficult to track in case of errors

[olle.holm]

When using this suggestion the autocomplete also worked for me in Visual studio code.