Question

如何在ZF2表单中设置Text元素的默认值？

我尝试了以下内容：

在视图文件中。这不会获取数据，也不会保存：

if($form->get('agencyName')->getValue() === '')
    $form->get('agencyName')->setValue('Virtual Field Practicum');

这既不影响视图，也不影响DB：

$this->add(array(
        'name' => 'agencyName',

        'options' => array(
            'label' => 'Agency Name',
        ),
        'attributes' => array(
            'disabled' => 'disabled',
            'value' => 'Virtual Field Practicum',
        )
    ));

我也试图以两种方式修改实体，但它并没有影响任何东西：

public function __construct()
{
    //set default agency name
    $this->agencyName = 'Virtual Field Practicum';
}

OR：

   public function setAgencyName($agencyName)
    {
        if ($agencyName === '')
            $this->agencyName = 'Virtual Field Practicum';
        else
            $this->agencyName = $agencyName;

        return $this;
    }

修改1 将我的通用操作添加到帖子中：

1）这个负责加载表单，并处理非ajax调用：

public function editTabAction()
{
    $buildName = $this->params()->fromRoute('buildName', 'unknown');

    if ($buildName == 'unknown') {
        $buildName = $this->params()->fromPost('buildName', 'unknown');

        if ($buildName == 'unknown') {
            trigger_error('Could not retrieve build name for ' . $buildName . ' entity for this form!');
        }
    }

    //extract parameter from dispatch command
    $studEvalId = (int)$this->params()->fromRoute('studEvalId', 0);

    if ($studEvalId == 0) {
        //extract parameter from the form submission
        $studEvalId = (int)$this->params()->fromPost('studEvalId', 0);
        if ($studEvalId == 0) {
            return $this->notFoundAction();
        }
    }

    $data = $this->getEntity($buildName, $studEvalId);

    // Get your ObjectManager from the ServiceManager
    $objectManager = $this->getEntityManager();


    // get from from FormElementManager plugin
    //forms are defined in Module.php
    $formName = $buildName . "Form";
    $sl = $this->getServiceLocator();
    $form = $sl->get('FormElementManager')->get($formName);

    $form->setHydrator(new DoctrineHydrator($objectManager ));
    $form->setObject($this->getEntityInstanceFromBuildName($buildName));

    $form->bind($data);

    //set class and Id for buttons like SaveChanges to reference it
    $form->setAttribute('class', "studentFormsClass_$studEvalId");
    $form->setAttribute('id', "studentFormsId_$studEvalId" . "_$buildName");


    //set buildName to the form
    $form->get('buildName')->setAttribute('value', $buildName);

    $request = $this->getRequest();
    if ($request->isPost()) {
        $formValidatorName = "OnlineFieldEvaluation\Form\\" . $buildName . "FormValidator";
        $formValidator = new  $formValidatorName();
        $form->setInputFilter($formValidator->getInputFilter());

        $form->setData($request->getPost());

        if ($form->isValid()) {
            $this->savetodb($form->getData(), $buildName);

            // Redirect to list of forms
            return false;
        } else {
            foreach ($form->getMessages() as $messageId => $message) {
                echo '<pre>';
                echo "Validation failure '$messageId':";
                print_r($message);
                echo '</pre>';
            }
        }
    }

    $view = new ViewModel(array(
        'studEvalId' => $studEvalId,
        'buildName' => $buildName,
        'form' => $form,
    ));
    $view->setTemplate('online-field-evaluation/tabs/edit' . $buildName . '.phtml');

    return $view;
}

2）这个负责ajax调用：

    public function validatepostajaxAction()
    {

        $request = $this->getRequest();
        $response = $this->getResponse();

        $buildName = $this->params()->fromRoute('buildName', 'unknown');

        if ($buildName == 'unknown') {
            $buildName = $this->params()->fromPost('buildName', 'unknown');

            if ($buildName == 'unknown') {
                trigger_error('Could not retrieve build name for ' . $buildName . ' entity for this form!');
            }
        }

        //extract parameter from dispatch command
        $studEvalId = (int)$this->params()->fromRoute('studEvalId', 0);

        if ($studEvalId == 0) {
            //extract parameter from the form submission
            $studEvalId = (int)$this->params()->fromPost('studEvalId', 0);
            if ($studEvalId == 0) {

                return $this->notFoundAction();
            }
        }

        $data = $this->getEntity($buildName, $studEvalId);
        $objectManager = $this->getEntityManager();

        $formName = $buildName . "Form";
        $sl = $this->getServiceLocator();
        $form = $sl->get('FormElementManager')->get($formName);

        $form->setHydrator(new DoctrineHydrator($objectManager ));
        $entityName = 'OnlineFieldEvaluation\Entity\\' . $buildName;
        $form->setObject(new $entityName());

        $form->bind($data);

        //set class and Id for buttons like SaveChanges to reference it
        $form->setAttribute('class', "studentFormsClass_$studEvalId");
        $form->setAttribute('id', "studentFormsId_$studEvalId" . "_$buildName");


        //set buildName to the form
        $form->get('buildName')->setAttribute('value', $buildName);

        $messages = array();
        if ($request->isPost()) {
            $formValidatorName = "OnlineFieldEvaluation\Form\\" . $buildName . "FormValidator";
            $formValidator = new  $formValidatorName();
            $form->setInputFilter($formValidator->getInputFilter());

            $form->setData($request->getPost());

            if (!$form->isValid()) {
                $errors = $form->getMessages();
                foreach ($errors as $key => $row) {

                    if (!empty($row) && $key != 'submit') {
                        foreach ($row as $keyer => $rower) {
                            //save error(s) per-element that
                            //needed by Javascript
                            $messages[$key][] = $rower;
                        }
                    }
                }
            }

            if (!empty($messages)) {
                $response->setContent(
                    \Zend\Json\Json::encode(
                        array('status' => 'error',
                            'messages' => (array) $messages,
                            'buildName' => $buildName,
                            'studEvalId' => $studEvalId

                        )));

            } else {
                //save to db <span class="wp-smiley wp-emoji wp-emoji-wink" title=";)">;)</span>
                $this->savetodb($form->getData(), $buildName);
                $response->setContent(
                    \Zend\Json\Json::encode(
                        array(
                            'status' => 'success',
                            'messages' => 'Successfuly saved.',
                            'buildName' => $buildName,
                            'studEvalId' => $studEvalId
                        )
                    ));
            }
        }

        return $response;
    }

Answer 1

要为元素设置默认值，只需执行以下操作：

打开控制器的动作，呈现所需的视图
实例化表单，按名称获取元素并在其上调用setValue()

如下所示：

public function addAction()
{
     $form = new YourAgencyForm();

     $form->get('agencyName')->setValue('Virtual Field Practicum');
     ....

真的那么简单

zf2表单中文本元素的默认值

1 个答案: