Silverstripe 基于 url 填充表单

Question

我有 TeamsPage 类和 Team 类。我试图弄清楚如何根据在 URL 中传递的 ID 使用数据库中的数据预先填充表单。下面是我尝试的代码，我尝试通过模板传递 ID，但没有奏效。我还能如何做到这一点？如果有一种方法可以将团队作为我已经在编辑功能中拥有的对象传递，我会更喜欢这样我就不必两次访问数据库。有没有办法做到这一点？

团队页面：

<?php
class TeamsPage extends Page {
  private static $has_many = array (
    'Teams' => 'Team',
  );
  public function getCMSFields() {
    $fields = parent::getCMSFields();
    $fields->addFieldToTab('Root.Teams', GridField::create(
        'Teams',
        'Teams on this page',
        $this->Teams(),
        GridFieldConfig_RecordEditor::create()
    ));
    return $fields;
  }
}
class TeamsPage_Controller extends Page_Controller {
  private static $allowed_actions = array (
    'show', 'edit', 'EditTeamForm'
  );

  public function EditTeamForm($teamId){
    $fields = new FieldList(
        new TextField('TeamName'),
        new TextareaField('TeamDescription')
    );
    $actions = new FieldList(
        new FormAction('EditTeam', 'Save Changes')
    );
    $requiredFields = new RequiredFields(array('TeamName','TeamDescription'));
    $form = new Form($this, 'EditTeamForm', $fields, $actions, $requiredFields);
    $form->setFormMethod('POST', true);

    $data = Session::get("FormData.{$form->getName()}.data");
    $team = Team::get()->byID($teamId);
    return $data ? $form->loadDataFrom($data) : $form->loadDataFrom($team);
  }

  public function show(SS_HTTPRequest $request) {
    $team = Team::get()->byID($request->param('ID'));

    if(!$team) {
        return $this->httpError(404,'That team could not be found');
    }

    return array (
        'Team' => $team
    );
  }

  public function edit(SS_HTTPRequest $request){
    $team = Team::get()->byID($request->param('ID'));

    if(!$team) {
        return $this->httpError(404,'That team could not be found');
    }

    return array (
        'Team' => $team
    );
  }
}

团队：

<?php
class Team extends DataObject {
  private static $db = array(
    'TeamCaptain' => 'Int',
    'TeamName' => 'Varchar',
    'TeamDescription' => 'Text'
  );
  private static $has_one = array (
    'Photo' => 'Image',
    'TeamsPage' => 'TeamsPage'
  );
  private static $summary_fields = array (
    'GridThumbnail' => '',
    'TeamCaptain' => 'Team Captain',
    'TeamName' => 'TeamName',
    'TeamDescription' => 'Team Description',
  );
  public function getGridThumbnail() {
    if($this->Photo()->exists()) {
        return $this->Photo()->SetWidth(100);
    }
    return '(no image)';
  }
  public function getCMSFields() {
    $fields = FieldList::create(
        TextField::create('TeamCaptain'),
        TextField::create('TeamName'),
        TextareaField::create('TeamDescription'),
        $uploader = UploadField::create('Photo')
    );
    $uploader->setFolderName('teams-photos');
    $uploader->getValidator()->setAllowedExtensions(array(
        'png','gif','jpeg','jpg'
    ));
    return $fields;
  }

  public function Link() {
    return $this->TeamsPage()->Link('show/'.$this->ID);
  }
}

TeamsPage_edit.ss

<% if GetMember() %>
  Welcome $getMember.FirstName<br />
  $EditTeamForm($ID)
  <a href="home">Back to Home</a>
<% else %>
  $GoToLogin()
<% end_if %>

Answer 1

在我看来，您从模板向 EditTeamForm 传递了错误的 ID。除非有我没有看到的 声明，否则我认为您想调用：

$EditTeamForm($Team.ID)

在我看来其他一切都很好。