Laravel 5.1 Migration and Seeding Cannot truncate a table referenced in a foreign key constraint

Question

I\'m trying to run the migration (see below) and seed the database, but when I run

php artisan migrate --seed

I get this error:

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Answer 1

To clear a table using Eloquent:

Model::query()->delete();

Example using default user model

User::query()->delete();

Answer 2

before drop

Schema::disableForeignKeyConstraints();

and before close run method

Schema::enableForeignKeyConstraints();

Answer 3

I'm using Laravel 7.x, this worked for me. Goes without saying that it should only be used in development. To read more, check it out here.

DatabaseSeeder.php

    <?php

use Illuminate\Database\Seeder;

class DatabaseSeeder extends Seeder
{
    /**
     * Seed the application's database.
     *
     * @return void
     */
    public function run()
    {
        // the Eloquent part and disabling and enabling of foreign keys is only intended for development
        Eloquent::unguard();

        //disable foreign key check for this connection before running seeders
        DB::statement('SET FOREIGN_KEY_CHECKS=0;');

        $this->call(RolesTableSeeder::class);
        $this->call(UsersTableSeeder::class);

        // supposed to only apply to a single connection and reset it's self
        // but I like to explicitly undo what I've done for clarity
        DB::statement('SET FOREIGN_KEY_CHECKS=1;');
    }
}