我希望在Silverstripe 4.2中创建编辑表单，就像我正在寻找的Stack Overflow的编辑功能一样。
已编辑：我希望拥有一个页面，该页面仅对我的网站的注册成员可用，以便他们可以将所有者的课程列表以所有者的身份发布到Frontend（不在CMS中） ，并且需要单击“编辑”以将您带到一个相同的表单（相同的ClassListingForm），使成员所有者可以编辑/更新自己发布的班级列表。除了当前我所坚持的edit和submit功能之外，我可以进行所有工作。
我有一个用于编辑特定班级列表的链接：
<a href="{$Top.Link}edit/{$ID}">Edit class listing</a></div>
它确实重定向到未显示此网址的404页面：
“ http://.../learners/class-listings/edit/61”
这是我到目前为止的以下代码，ClassListingForm运行正常，只需要使 EditListingForm 和 doClassListing 函数正常工作，我可能正在做这些代码有问题吗？还是有一种更好的方式来正确完成编辑表单，我无法在搜索中的任何地方找到我需要的特定内容，因为在SilverStripe课程中没有太多涵盖EditForm函数的教程。
<?php
class ClassListings extends DataObject {
private static $table_name = 'ClassListings';
private static $db = [
'CourseTitle' => 'Varchar(255)',
'CourseLocation' => 'Varchar(255)',
];
private static $has_one = [
'ClassListingPage' => ClassListingPage::class,
];
}
<?php
class ClassListingPageController extends PageController {
private static $allowed_actions = [
'ClassListingForm',
'ClassEditForm'
];
public function ClassListingForm() {
$id = (int)$this->urlParams['ID'];
$data = ($id)? $data = ClassListings::get()->byID($id) : false;
$form = Form::create(
$this,
__FUNCTION__,
FieldList::create(
TextField::create('CourseTitle', 'Course title:')
->setAttribute('placeholder', 'NZSL Level 1, NZSL 1A')
->setCustomValidationMessage('Please enter the course title field')
->addExtraClass('requiredField CourseTitle'),
TextField::create('CourseLocation','Region:')
->setAttribute('placeholder', 'Enter region')
->setCustomValidationMessage('Please enter the region field')
->addExtraClass('requiredField'),
HiddenField::create('ID', 'ID')->setValue($ClassListingPageID)
),
FieldList::create(
FormAction::create('handleClassListing')
->setTitle('Post your class listing')
->addExtraClass('btn btn-primary primary')
),
RequiredFields::create(
'CourseTitle',
'CourseLocation'
)
);
$form->loadDataFrom(Member::get()->byID(Member::currentUserID()));
$form->getSecurityToken()->getValue();
if ($form->hasExtension('FormSpamProtectionExtension')) {
$form->enableSpamProtection();
}
$data = $this->getRequest()->getSession()->get("FormData.{$form->getName()}.data");
return $data ? $form->loadDataFrom($data) : $form;
}
public function handleClassListing($data, $form) {
$session = $this->getRequest()->getSession();
$session->set("FormData.{$form->getName()}.data", $data);
$class = ClassListings::create($this->owner);
$class->CourseTitle = $data['CourseTitle'];
$class->CourseLocation = $data['CourseLocation'];
$class->ID = $data['ID'];
$class->ClassListingPageID = $this->ID;
$form->saveInto($class);
$class->write();
$session->clear("FormData.{$form->getName()}.data");
$form->sessionMessage('Your class listing has been posted!','good');
$session = $this->getRequest()->getSession();
return $this->redirect($this->Link());
}
public function ClassEditForm() {
$ClassListingPageID = (int)$this->urlParams['ID'];
$data = ($ClassListingPageID)? $data = ClassListings::get()->byID($ClassListingPageID) : false;
$var = $this->getRequest()->getVar('$data');
if($var){
$form = Form::create(
$this,
__FUNCTION__,
FieldList::create(
TextField::create('CourseTitle', 'Course title:')
->setAttribute('placeholder', 'NZSL Level 1, NZSL 1A')
->setCustomValidationMessage('Please enter the course title field')
->addExtraClass('requiredField CourseTitle'),
TextField::create('CourseLocation','Region:')
->setAttribute('placeholder', 'Enter region')
->setCustomValidationMessage('Please enter the region field')
->addExtraClass('requiredField'),
HiddenField::create('ID', 'ID')->setValue($ClassListingPageID)
),
FieldList::create(
FormAction::create('doClassListing')
->setTitle('Post your class listing')
->addExtraClass('btn btn-primary primary')
),
RequiredFields::create(
'CourseTitle',
'CourseLocation',
)
);
$form->loadDataFrom(ClassListings::get()->filter(['ClassListingPageID' => $var])[0]);
$form->getSecurityToken()->getValue();
if ($form->hasExtension('FormSpamProtectionExtension')) {
$form->enableSpamProtection();
}
$data = $this->getRequest()->getSession()->get("FormData.{$form->getName()}.data");
return $data ? $form->loadDataFrom($data) : $form;
}
return;
}
public function doUpdateClassListing($data, Form $form) {
$session = $this->getRequest()->getSession();
$session->set("FormData.{$form->getName()}.data", $data);
$class = ClassListings::create($this->owner);
$class->CourseTitle = $data['CourseTitle'];
$class->CourseLocation = $data['CourseLocation'];
$class->ID = $data['ID'];
$class->ClassListingPageID = $this->ID;
$form->saveInto($class);
$class->write();
$session->clear("FormData.{$form->getName()}.data");
$form->sessionMessage('Your class listing has been updated!','good');
$session = $this->getRequest()->getSession();
return $this->redirect($this->Link());
}
}
答案 0 :(得分：0)
如果其他人遇到与我相同的问题，我应该发布此答案以供分享。
最后使其正常工作并立即解决了该问题，并替换了 ClassEditForm 和 doUpdateClassListing 方法的全部代码，还创建了另一个名为 Edit < / strong>：
public function Edit(HTTPRequest $request) {
$id = (int)$request->param('ID');
$class = ClassListings::get()->byID($id);
if (!$class || !$class->exists()) {
return ErrorPage::response_for(404);
}
$form = $this->ClassEditForm($class);
$return = $this->customise(array(
'Title' => 'Edit: ' . $class->CourseTitle,
'Form' => $form,
));
return $return = $return->renderWith(array('ClassListingPage_edit', 'Page'));
}
public function ClassEditForm() {
$id = (int)$this->urlParams['ID'];
$class = ClassListings::get()->byID($id);
$fields = new FieldList(
HiddenField::create('ID')->setValue($id),
TextField::create('CourseTitle', 'Course title:')
->setAttribute('placeholder', 'NZSL Level 1, NZSL 1A')
->setCustomValidationMessage('Please enter the course title field')
->addExtraClass('requiredField CourseTitle'),
TextField::create('CourseLocation','Region:')
->setAttribute('placeholder', 'Enter region')
->setCustomValidationMessage('Please enter the region field')
->addExtraClass('requiredField')
);
$actions = new FieldList(
FormAction::create('doUpdateClassListing')
->setTitle('Update your class listing')
->addExtraClass('btn btn-primary primary')
);
$validator = new RequiredFields([
'CourseTitle',
'CourseLocation'
]);
$form = Form::create($this, 'ClassEditForm', $fields, $actions, $validator);
if ($class) $form->loadDataFrom($class);
return $form;
}
public function doUpdateClassListing($data, Form $form) {
if($data['ID']){
$id = $data['ID'];
$class = ClassListings::get()->byID($id);
} else {
$class = ClassListings::create();
}
$form->saveInto($class);
$id = $class->write();
$form->sessionMessage('Your class listing has been updated!','good');
$this->redirect($this->Link() . "edit/".$id);
}