<form class="form-horizontal form-material" v-on:submit="update_profile">
               <div class="form-group">
                  <label class="col-md-12">Nombre</label>
                  <div class="col-md-12">
                     <input type="text" v-model="datos.name" class="form-control form-control-line" value="<?= $this->session->userdata('name'); ?>">
                  </div>
               </div>
               <div class="form-group">
                  <label class="col-md-12">Apellido</label>
                  <div class="col-md-12">
                     <input type="text" v-model="datos.lastname" class="form-control form-control-line" value="<?= $this->session->userdata('lastname'); ?>">
                  </div>
               </div>
               <div class="form-group">
                  <label for="example-email" class="col-md-12">Email</label>
                  <div class="col-md-12">
                     <input type="email" v-model="datos.email" class="form-control form-control-line" value="<?= $this->session->userdata('email'); ?>">
                  </div>
               </div>
               <div class="form-group">
                  <div class="col-sm-12">
                     <button type="submit" class="btn btn-success pull-right">Actualizar</button>
                  </div>
               </div>
            </form>