Question

我的数据库表：

TABLE `events` (
    `event_id` INT(11) unsigned NOT NULL AUTO_INCREMENT,
    `event_title` VARCHAR(255) NOT NULL,
    `event_desc` TEXT,
    `event_location` VARCHAR(255) NOT NULL,
    `event_requirements` TEXT DEFAULT NULL,
    `event_date` DATETIME NOT NULL,
 PRIMARY KEY (`event_id`)

目标：在选择下拉菜单中选择事件时，我想显示其余的数据库数据，这些数据属于下面div中的事件。

尝试解决问题（在MVC架构中）：

控制器

  function index()
  {
      $overview_model = $this->loadModel('Events');
      $this->view->events = $overview_model->getEventTypes();
      $this->view->render('events/index');
  }

模型

  public function getEventTypes()
  {
      $sth = $this->db->prepare("SELECT * FROM events");
      $sth->execute();

      $events = array();

      foreach ($sth->fetchAll() as $event) {
          $events[$event->event_id] = new stdClass();
          $events[$event->event_id]->event_id = $event->event_id;
          $events[$event->event_id]->event_title = $event->event_title;
          $events[$event->event_id]->event_desc = $event->event_desc;
          $events[$event->event_id]->event_location = $event->event_location;
          $events[$event->event_id]->event_requirements = $event->event_requirements;
          $events[$event->event_id]->event_date = $event->event_date;
      }

      return $events;
  }

查看

    <!-- start event type selection --> 
   <div class="event-selection">
     <label>Choose an event:</label>
     <select id="select-event-type">
        <?php foreach ($this->events as $event) {
            // Using the event's ID as a value makes it easier for us to look up the selected event.
            echo "<option value='" .$event->event_id. "'>" .$event->event_title."</option>";
        }?>
    </select>

    <script>
        (function ($) {
            // Here we set the JavaScript variable 'events' to a JSON-encoded copy of the array we passed to the template, or null (if there are no events).
            var events = <?php echo (count($this->events) > 0) ? "JSON.parse(" .json_encode($this->events). ")" : "null"; ?>
            $(document).ready(function() {
                $('#select-event-type').change(function() {
                    if (events) {
                        // Now we can get the event details from the selected value.
                        var event = events[this.value];
                        $('#event-details').html(event->title);
                    }
                });
            });
        })($);
    </script>   

    <!-- Start event-details -->
    <div id="event-details"></div> <!-- /#event-details -->

</div><!-- /.event-selection -->

更新：
在控制台中，所有事件的数据现在都以json格式显示（非常感谢你！）。但仍然没有输出，当我在选择中更改事件时，控制台中的数据不会更新！

根据下拉选择显示数据库数据

0 个答案: