我尝试将此教程https://waltherlalk.com/blog/dynamic-form-input-fields 实施到CakePHP 3 ，一切正常，直到我提交表单。它不会保存任何等级。我在这里读了很多帖子，但没有任何帮助。
我猜控制器有问题，所以这是我的控制器：
public function add()
{
$student = $this->Students->newEntity();
if ($this->request->is('post')) {
$student = $this->Students->patchEntity($student, $this->request->getData());
if ($this->Students->save($student, ['associated' => ['Grades']])) {
$this->Flash->success(__('The student has been saved.'));
return $this->redirect(['action' => 'index']);
}
$this->Flash->error(__('The student could not be saved. Please, try again.'));
}
$this->set(compact('student'));
$this->set('_serialize', ['student']);
}
Grades.ctp：
<?php
$key = isset($key) ? $key : '{{ key }}';
// I changed <%= key %> to {{ key }}
?>
<tr>
<td>
<?php echo $this->Form->hidden("grade.{$key}.id") ?>
<?php echo $this->Form->text("grade.{$key}.subject",array("id"=>"grade{$key}Subject")); ?>
</td>
<td>
<?php echo $this->Form->select("grade.{$key}.grade", array(
'A+',
'A',
'B+',
'B',
'C+',
'C',
'D',
'E',
'F'
), array(
'empty' => '-- Select grade --',
"id"=>"grade{$key}grade"
)); ?>
</td>
<td class="actions">
<a href="#" class="remove">Remove grade</a>
</td>
</tr>
并添加.ctp：
<?php
/**
* @var \App\View\AppView $this
*/
?>
<nav class="large-3 medium-4 columns" id="actions-sidebar">
<ul class="side-nav">
<li class="heading"><?= __('Actions') ?></li>
<li><?= $this->Html->link(__('List Students'), ['action' => 'index']) ?></li>
<li><?= $this->Html->link(__('List Grades'), ['controller' => 'Grades', 'action' => 'index']) ?></li>
<li><?= $this->Html->link(__('New Grade'), ['controller' => 'Grades', 'action' => 'add']) ?></li>
</ul>
</nav>
<div class="students form large-9 medium-8 columns content">
<?= $this->Form->create($student) ?>
<fieldset>
<legend><?= __('Add Student') ?></legend>
<?php
echo $this->Form->control('name');
?>
</fieldset>
<fieldset>
<legend><?php echo __('Grades');?></legend>
<table id="grade-table">
<thead>
<tr>
<th>Subject</th>
<th>Grade achieved</th>
<th> </th>
</tr>
</thead>
<tbody></tbody>
<tfoot>
<tr>
<td colspan="2"></td>
<td class="actions">
<a href="#" class="add">Add grade</a>
</td>
</tr>
</tfoot>
</table>
</fieldset>
<script id="grade-template" type="text/x-underscore-template">
<?php echo $this->element('grades');?>
</script>
<?= $this->Form->button(__('Submit')) ?>
<?= $this->Form->end() ?>
</div>
<script>
$(document).ready(function() {
//I changed undescore default template settings
_.templateSettings = {
interpolate: /\{\{(.+?)\}\}/g
}
var
gradeTable = $('#grade-table'),
gradeBody = gradeTable.find('tbody'),
gradeTemplate = _.template($('#grade-template').remove().text()),
numberRows = gradeTable.find('tbody > tr').length;
gradeTable
.on('click', 'a.add', function(e) {
e.preventDefault();
$(gradeTemplate({key: numberRows++}))
.hide()
.appendTo(gradeBody)
.fadeIn('fast');
})
.on('click', 'a.remove', function(e) {
e.preventDefault();
$(this)
.closest('tr')
.fadeOut('fast', function() {
$(this).remove();
});
});
if (numberRows === 0) {
gradeTable.find('a.add').click();
}
});
</script>
调试：
/src/Controller/StudentsController.php (line 55)
[
'name' => 'asdad',
'grade' => [
(int) 0 => [
'id' => '',
'subject' => 'adsads',
'grade' => '0'
]
]
]
/src/Controller/StudentsController.php (line 56)
object(App\Model\Entity\Student) {
'name' => 'asdad',
'grade' => [
(int) 0 => [
'id' => '',
'subject' => 'adsads',
'grade' => '0'
]
],
'[new]' => true,
'[accessible]' => [
'*' => true,
'id' => false
],
'[dirty]' => [
'name' => true,
'grade' => true
],
'[original]' => [],
'[virtual]' => [],
'[errors]' => [],
'[invalid]' => [],
'[repository]' => 'Students'
}
如果您了解任何其他教程如何将动态表单实现到添加页面，请告诉我。谢谢。
答案 0 :(得分：1)
您的成绩数据未转换为实体，如调试输出中所示，它只是一个数组，表示您的目标是错误的属性。
按照惯例，hasMany关联的实体关联属性是关联别名的下划线复数变体，因此如果名为Grades的关联，则为grades，而不是grade。
因此，请务必将所有grade.{$key}和grade{key}内容重命名为grades.{$key}和grades{$key}。
另见