public function cadastra(Request $request)
 {
     $matricula = new Matricula();
     $matricula->aluno = $request['idaluno'];
     $matricula->curso = $request['idcurso'];
     $matricula->ano = $request['ano'];
     $matricula->ativo = 1;
     $matricula->data_matricula = $request['data_matricula'];
     $matricula->save();
 }
 public function atualizar(Request $request)
 {
     $matricula = Matricula::all()->find($request['cod_matricula']);
     $matricula->pago = $request['valorpago'] - $request['valor'] >= 0 ? true : false;
     $matricula->valor_pago = $request['valorpago'];
     $matricula->save();
 }