pedi2/database/seeds/GrupoDeCompraSeeder.php

<?php

use Illuminate\Database\Seeder;
use League\Csv\Reader;

class GrupoDeCompraSeeder extends Seeder
{
    /**
     * Run the database seeds.
     *
     * @return void
     */
    public function run()
    {
        $csv = Reader::createFromPath(resource_path('csv/barrios.csv'), 'r');
        $csv->setDelimiter("|");
        $csv->setEnclosure("'");
        $csv->setHeaderOffset(0);
        $registros = $csv->getRecords();
        $gdcToInsert = [];
        $usersToInsert = [];

        foreach($registros as $key => $registro){
            $gdcToInsert[] = [
                'nombre'        => $registro['barrio'],
                'region'        => $registro['region'],
                'telefono'      => $registro['telefono'],
                'correo'        => $registro['correo'],
                'referente_finanzas'   => $registro['referente']
            ];

            $usersToInsert[] = [
                'name' => $registro['barrio'],
                'password' => Hash::make($registro['barrio']),
                'grupo_de_compra_id' => $key
            ];
        }

        foreach (array_chunk($gdcToInsert,DatabaseSeeder::CHUNK_SIZE) as $chunk)  
        {
            DB::table('grupos_de_compra')->insert($chunk); 
        }

        foreach (array_chunk($usersToInsert,DatabaseSeeder::CHUNK_SIZE) as $chunk)  
        {
            DB::table('users')->insert($chunk);
        }
    }
}