**修改控制器**
新建、编辑和删除专辑功能
> module/Album/src/Controller/AlbumController.php
```php
// Add the following import statements at the top of the file:
use Album\Form\AlbumForm;
use Album\Model\Album;
class AlbumController extends AbstractActionController
{
/* ... */
/* Update the following method to read as follows: */
public function addAction()
{
$form = new AlbumForm();
$form->get('submit')->setValue('Add');
$request = $this->getRequest();
if (! $request->isPost()) {
return ['form' => $form];
}
$album = new Album();
$form->setInputFilter($album->getInputFilter());
$form->setData($request->getPost());
if (! $form->isValid()) {
return ['form' => $form];
}
$album->exchangeArray($form->getData());
$this->table->saveAlbum($album);
return $this->redirect()->toRoute('album');
}
public function editAction()
{
$id = (int) $this->params()->fromRoute('id', 0);
if (0 === $id) {
return $this->redirect()->toRoute('album', ['action' => 'add']);
}
// Retrieve the album with the specified id. Doing so raises
// an exception if the album is not found, which should result
// in redirecting to the landing page.
try {
$album = $this->table->getAlbum($id);
} catch (\Exception $e) {
return $this->redirect()->toRoute('album', ['action' => 'index']);
}
$form = new AlbumForm();
$form->bind($album);
$form->get('submit')->setAttribute('value', 'Edit');
$request = $this->getRequest();
$viewData = ['id' => $id, 'form' => $form];
if (! $request->isPost()) {
return $viewData;
}
$form->setInputFilter($album->getInputFilter());
$form->setData($request->getPost());
if (! $form->isValid()) {
return $viewData;
}
$this->table->saveAlbum($album);
// Redirect to album list
return $this->redirect()->toRoute('album', ['action' => 'index']);
}
// Add content to the following method:
public function deleteAction()
{
$id = (int) $this->params()->fromRoute('id', 0);
if (!$id) {
return $this->redirect()->toRoute('album');
}
$request = $this->getRequest();
if ($request->isPost()) {
$del = $request->getPost('del', 'No');
if ($del == 'Yes') {
$id = (int) $request->getPost('id');
$this->table->deleteAlbum($id);
}
// Redirect to list of albums
return $this->redirect()->toRoute('album');
}
return [
'id' => $id,
'album' => $this->table->getAlbum($id),
];
}
/* ... */
}
```
**模板文件**
新建专辑页面
> module/Album/view/album/album/add.phtml
```php+HTML
<?php
$title = 'Add new album';
$this->headTitle($title);
?>
<h1><?= $this->escapeHtml($title) ?></h1>
<?php
// This provides a default CSS class and placeholder text for the title element:
$album = $form->get('title');
$album->setAttribute('class', 'form-control');
$album->setAttribute('placeholder', 'Album title');
// This provides a default CSS class and placeholder text for the artist element:
$artist = $form->get('artist');
$artist->setAttribute('class', 'form-control');
$artist->setAttribute('placeholder', 'Artist');
// This provides CSS classes for the submit button:
$submit = $form->get('submit');
$submit->setAttribute('class', 'btn btn-primary');
$form->setAttribute('action', $this->url('album', ['action' => 'add']));
$form->prepare();
echo $this->form()->openTag($form);
?>
<?php // Wrap the elements in divs marked as form groups, and render the
// label, element, and errors separately within ?>
<div class="form-group">
<?= $this->formLabel($album) ?>
<?= $this->formElement($album) ?>
<?= $this->formElementErrors()->render($album, ['class' => 'help-block']) ?>
</div>
<div class="form-group">
<?= $this->formLabel($artist) ?>
<?= $this->formElement($artist) ?>
<?= $this->formElementErrors()->render($artist, ['class' => 'help-block']) ?>
</div>
<?php
echo $this->formSubmit($submit);
echo $this->formHidden($form->get('id'));
echo $this->form()->closeTag();
```
编辑专辑页面
> module/Album/view/album/album/edit.phtml
```php+HTML
<?php
// module/Album/view/album/album/edit.phtml:
$title = 'Edit album';
$this->headTitle($title);
?>
<h1><?= $this->escapeHtml($title) ?></h1>
<?php
$album = $form->get('title');
$album->setAttribute('class', 'form-control');
$album->setAttribute('placeholder', 'Album title');
$artist = $form->get('artist');
$artist->setAttribute('class', 'form-control');
$artist->setAttribute('placeholder', 'Artist');
$submit = $form->get('submit');
$submit->setAttribute('class', 'btn btn-primary');
$form->setAttribute('action', $this->url('album', [
'action' => 'edit',
'id' => $id,
]));
$form->prepare();
echo $this->form()->openTag($form);
?>
<div class="form-group">
<?= $this->formLabel($album) ?>
<?= $this->formElement($album) ?>
<?= $this->formElementErrors()->render($album, ['class' => 'help-block']) ?>
</div>
<div class="form-group">
<?= $this->formLabel($artist) ?>
<?= $this->formElement($artist) ?>
<?= $this->formElementErrors()->render($artist, ['class' => 'help-block']) ?>
</div>
<?php
echo $this->formSubmit($submit);
echo $this->formHidden($form->get('id'));
echo $this->form()->closeTag();
```
删除专辑页面
> module/Album/view/album/album/delete.phtml
```php+HTML
<?php
$title = 'Delete album';
$url = $this->url('album', ['action' => 'delete', 'id' => $id]);
$this->headTitle($title);
?>
<h1><?= $this->escapeHtml($title) ?></h1>
<p>
Are you sure that you want to delete
"<?= $this->escapeHtml($album->title) ?>" by
"<?= $this->escapeHtml($album->artist) ?>"?
</p>
<form action="<?= $url ?>" method="post">
<div class="form-group">
<input type="hidden" name="id" value="<?= (int) $album->id ?>" />
<input type="submit" class="btn btn-danger" name="del" value="Yes" />
<input type="submit" class="btn btn-success" name="del" value="No" />
</div>
</form>
```
