/**
  * Run the migrations.
  *
  * @return void
  */
 public function up()
 {
     $classRooms = DB::select(DB::raw("select classrooms.id,classrooms.block from classrooms"));
     $array = [];
     foreach ($classRooms as $classRoom) {
         $array[] = Block::select()->where('name', '=', $classRoom->block)->get()->first()->id;
     }
     Schema::table('classrooms', function ($table) {
         $table->dropColumn('block');
         $table->integer('block_id')->unsigned()->nullable();
         $table->foreign('block_id')->references('id')->on('blocks');
     });
     $index = 0;
     $classRoom = Classroom::all();
     foreach ($classRoom as $value) {
         $value->block_id = $array[$index];
         $value->save();
         $index++;
     }
 }
 /**
  * Display a listing of the resource.
  *
  * @return Response
  */
 public function index()
 {
     $classrooms = Classroom::all();
     return view('classrooms.index', compact('classrooms'));
 }