Question

我正在使用cakephp 2x。我的编辑页面图片上传字段中存在问题。每当我尝试编辑我的个人资料页面时，它都会将图像上传字段显示为空白。其他字段信息与填写配置文件的添加形式保持相同，但图像字段无法检索存储的图像。我是cakephp的新手，如果有人知道我如何检索图像？请帮助！我还想知道如何存储多个图像，并检查相同的图像是不是上传了两次。谢谢！这是我的图片上传代码 - ＆gt;

 // File upload function in Model.php
       public $validate = array( 
         'image' => array(
        'uploadError' => array(
            'rule' => 'uploadError',
            'message' => 'Something went wrong with the file upload',
            'required' => FALSE,
            'allowEmpty' => TRUE,
        ),
        // http://book.cakephp.org/2.0/en/models/data-   validation.html#Validation::mimeType

        // custom callback to deal with the file upload
        'imageOne' => array(
            'rule' => 'imageOne',
            'message' => 'Something went wrong processing your file',
            'required' => FALSE,
            'allowEmpty' => TRUE,
            'last' => TRUE,
        ),
    ),
   );


public function imageOne($check=array()) {
  // deal with uploaded file
   if (!empty($check['image']['tmp_name'])) {

      // check file is uploaded
      if (!is_uploaded_file($check['image']['tmp_name'])) {
        return FALSE;
      }

    // build full filename
     $filename = WWW_ROOT . $this->uploadDir . DS .   Inflector::slug(pathinfo($check['image']['name'],   PATHINFO_FILENAME)).'.'.pathinfo($check['image']['name'], PATHINFO_EXTENSION);

    // @todo check for duplicate filename
 /* if (!file_exists($check['image']['tmp_name'],$filename)) {
   echo "Sorry, file already exists.";

    }*/
    // try moving file
    if (!move_uploaded_file($check['image']['tmp_name'], $filename)) {
        return FALSE;

    // file successfully uploaded
    } else {
        // save the file path relative from WWW_ROOT e.g.     uploads/example_filename.jpg
        $this->data[$this->alias]['filepath'] = str_replace(DS, "/",     str_replace(WWW_ROOT, "", $filename) );
    }
}

return TRUE;
 }


   public function beforeSave($options = array()) {
  // a file has been uploaded so grab the filepath
  if (!empty($this->data[$this->alias]['filepath'])) {
    $this->data[$this->alias]['image'] = $this->data[$this->alias]    ['filepath'];
}


  // Controller.php

  public function edit($id = null) {
    if (!$this->CollegeProfile->exists($id)) {
        throw new NotFoundException(__('Invalid college profile'));
    }
    if ($this->request->is(array('post', 'put'))) {
            $this->request->data['CollegeProfile']['user_id'] = $this->Auth-  >user('id');
        $this->request->data['CollegeProfile']['id'] = $id;
        if ($this->CollegeProfile->save($this->request->data)) {
            $this->Session->setFlash(__('The college profile has been saved.'), 'default', array('class' => 'alert alert-success'));
            return $this->redirect(array('action' => 'index'));
        } else {
            $this->Session->setFlash(__('The college profile could not be saved. Please, try again.'), 'default', array('class' => 'alert alert-danger'));
        }
    } else {
        $options = array('conditions' => array('CollegeProfile.' . $this->CollegeProfile->primaryKey => $id));
        $this->request->data = $this->CollegeProfile->find('first', $options);
    }
    $this->loadModel('State');
    $states = $this->State->find('list');
    $this->set(compact('states'));
}

 //Edit.ctp
 <div class="form-group">
            <?php echo $this ->Form->input('image',array('class'=>'form-control','type'=>'file'));?>
            </div>

Answer 1

没有办法做到这一点。

请参阅相关问题：Dynamically set value of a file input。

出于安全原因，大多数浏览器会阻止在输入类型文件上设置value属性，这样您就无法在没有用户输入的情况下上传文件。

但是，为了向用户显示他们上次选择的内容，您可以执行以下操作;

<?php
// edit.ctp
if (!empty($this->request->data['Model']['image'])) {
    $label = "Current file: " . $this->request->data['Model']['image'];
} else {
    $label = __("Select file");
}
echo $this->Form->input('Model.image', array('type' => 'file', 'label' => $label));

Answer 2

这是不可能的，相反，您可以在保存之前获取数据，比较字段值是否为空并重新填充您之前获取的数组。例如

$data=$this->Option->findById(1);

//pic slide1

$slide1=$this->image($this->request->data['Option']['slide1']);(this is the upload)
if($slide1){ $this->request->data['Option']['slide1']=$slide1; }else{$this->request->data['Option']['slide1']=$data['Option']['slide1'];}

在这种情况下，我有一个“图像函数”，它返回上传的名称，所以如果名称为空，我将请求数据pic1值设置为我之前获取的$ data数组值。

编辑文件上传字段为空白

2 个答案: