Question

晚安。我正在使用cakephp 3.0，如果可以帮助我解决以下问题，我将非常感激：

我有一个在这个数组中定义的选择列表：

$daysOfWeek = ['Monday' => 'Monday', 'Tuesday' => 'Tuesday', 'Wednesday' => 'Wednesday', 'Thursday' => 'Thursday', 'Friday' => 'Friday', 'Saturday' => 'Saturday', 'Sunday' => 'Sunday'];

在我的添加视图中，我有类似的内容，以便选择多天：

echo $this->Form->input('day_of_week', [
    'options' => $daysOfWeek,
    multiple' => 'checkbox']);

这样做，cakephp总是在我的数据库的 daysOfWeek 字段中保存我的空值，所以我必须编辑模型添加下一个函数：

public function beforeMarshal(CakeEvent $event, ArrayObject $data, ArrayObject $options)
{
    $data['day_of_week'] = json_encode($data['day_of_week']);
}

现在，多个选择的值在数据库中保存如下：

["Saturday","Sunday"]

但是如果用户想要编辑此表的某些条目的信息，则永远不会选中 daysOfWeek 的复选框。我该如何解决这个问题？

提前致谢。

Answer 1

您错过了下拉列表的selected属性。请使用此代码：

$arr = array("Saturday","Sunday");
$this->Form->input('day_of_week',array(
                              'type' => 'select', 
                              'multiple' => true, 
                              'options' => $daysOfWeek,
                              'selected' => $arr));

Answer 2

感谢您的回复。最后我在控制器中解决了以下问题：

Correctly Classified Instances         416               39.6568 %
Incorrectly Classified Instances       633               60.3432 %
Kappa statistic                          0.091 
Mean absolute error                      0.4371
Root mean squared error                  0.4663
Relative absolute error                 98.4524 %
Root relative squared error             98.9763 %
Coverage of cases (0.95 level)         100      %
Mean rel. region size (0.95 level)     100      %
Total Number of Instances             1049     

=== Detailed Accuracy By Class ===

             TP Rate  FP Rate  Precision  Recall   F-Measure  MCC      ROC Area  PRC Area  Class
             0.310    0.231    0.377      0.310    0.340      0.084    0.554     0.448     16-18
             0.271    0.167    0.460      0.271    0.341      0.123    0.501     0.359     19+
             0.599    0.511    0.382      0.599    0.467      0.084    0.570     0.395     All Age
Weighted Avg.    0.397    0.306    0.407      0.397    0.384      0.098    0.541     0.399

在视图中是同样的事情：

public function edit($id = null)
{
    $event = $this->Events->get($id, [
        'contain' => ['Categories', 'Playlists']
    ]);
    if ($this->request->is(['patch', 'post', 'put'])) {
        $event = $this->Events->patchEntity($event, $this->request->data);
        if ($this->Events->save($event)) {
            $this->Flash->success(__('The event has been saved.'));
            return $this->redirect(['action' => 'index']);
        } else {
            $this->Flash->error(__('The event could not be saved. Please, try again.'));
        }
    }
    $categories = $this->Events->Categories->find('list', ['limit' => 200]);
    $playlists = $this->Events->Playlists->find('list', ['limit' => 200]);
    $daysOfWeek = ['Monday' => 'Monday', 'Tuesday' => 'Tuesday', 'Wednesday' => 'Wednesday', 'Thursday' => 'Thursday', 'Friday' => 'Friday', 'Saturday' => 'Saturday', 'Sunday' => 'Sunday'];
    $event->day_of_week = json_decode($event->day_of_week);
    $this->set(compact('event', 'categories', 'playlists', 'daysOfWeek'));
    $this->set('_serialize', ['event']);
}

在cakephp中进行多项选择

2 个答案: