public function run()
{
$classeCN2 = Classe::where('code', '=', '420-CN2-DM')->first();
$classeDM1 = Classe::where('code', '=', '420-DM1-DM')->first();
$classeDM2 = Classe::where('code', '=', '420-DM2-DM')->first();
DB::table('classes_tps')->delete();
DB::table('tps')->delete();
$tp = new TP();
$tp->nom = 'TP1 CN2';
$tp->poids = 50;
$tp->save();
$tp->classes()->attach($classeCN2->id, ['poids_local' => 50]);
$tp = new TP();
$tp->nom = 'TP2 CN2';
$tp->poids = 50;
$tp->save();
$tp->classes()->attach($classeCN2->id, ['poids_local' => 50]);
$tp = new TP();
$tp->nom = 'TP1 DM1';
$tp->poids = 30;
$tp->save();
$tp->classes()->attach($classeDM1->id, ['poids_local' => 50]);
}