Question

我正在寻找一种解决方案来实现验证，以便为图片上传设置最小高度和最小宽度。我认为框架默认不提供这些功能。

Example : Allowed image upload minimum width: 500px and minimum height: 500px

我的代码扩展了成员数据对象：

member_extension.php

require_once 'ImageUpload_Validator.php';

class MemberExtension extends DataExtension {

  private static $has_one = array(
    'ImageMembre' => 'Image'
  );

  public function updateMemberFormFields(FieldList $fields) {

        //setup the new validator

        $validator = new ImageUpload_Validator();
        $validator->setMinDimensions(500,500);
        $validator->setAllowedExtensions(array('jpg','jpeg', 'gif', 'png'));
        //$validator->setAllowedMaxFileSize(array('*' => 4194304));



        $fields->push( $Upload = new UploadField('ImageMembre', 'Image membre'));

            $Upload->setValidator($validator);

  }

    function updateCMSFields(FieldList $fields) { 

       // $fields = parent::getCMSFields();

        $uploadfield = new UploadField('ImageMembre','Image Membre');

        //setup the new validator

        $validator = new ImageUpload_Validator();
        $validator->setMinDimensions(500,500);
        $validator->setAllowedExtensions(array('jpg','jpeg', 'gif', 'png'));
        //$validator->setAllowedMaxFileSize(array('*' => 4194304));


        $fields->addFieldToTab('Root.Main',$uploadfield);
            $uploadfield->setValidator($validator);

        return $fields;
    }

保存后，它返回错误：最小图像尺寸为500px x 500px，但我的图像有更多分辨率。

我认为脚本中有错误：

ImageUpload_Validator.php

class ImageUpload_Validator extends Upload_Validator{
    public $minwidth;
    public $minheight;
    public function setMinDimensions($width,$height){
        if(is_numeric($width) && intval($width)>=0)
            $this->minwidth=intval($width);
        else
            user_error('Invalid minimum width, value must be numeric and at least 0',E_USER_ERROR);
        if(is_numeric($height) && intval($height)>=0)
            $this->minheight=intval($height);
        else
            user_error('Invalid minimum height, value must be numeric and at least 0',E_USER_ERROR);
    }
    public function isValidDimensions() {
        //if we cannot determine the image size return false
        if(!$dims = getimagesize($this->tmpFile['tmp_name']))
            return false;
        if(($this->minheight && $dims[1]<=$this->minheight) || ($this->minwidth && $dims[0]<=$this->minwidth))
            return false;
        return true;
    }
    public function validate(){
        if(!isset($this->tmpFile['name']) || empty($this->tmpFile['name']))
            return true;
        if(!$this->isValidDimensions()){
            $this->errors[]=sprintf('Minimum image size is %s x %s ', $this->minwidth?$this->minwidth.'px':'(ANY)',$this->minheight?$this->minheight.'px':'(ANY)');
            return false;
        }
        return parent::validate();
    }
}

Answer 1

在updateMemberFormFields中，您必须切换一些行：

    $Upload->setValidator($validator);
    $fields->push( $Upload = new UploadField('ImageMembre', 'Image membre'));

应该是

    $fields->push( $Upload = new UploadField('ImageMembre', 'Image membre'));
    $Upload->setValidator($validator);

否则你将一些东西分配给一个未定义的对象......

Answer 2

我已经在链接上查询了问题和回答，告诉我的问题是重复...... Link。我在脚本中发现了一些错误，并且我用一些新的编码重新编写了它。我用其他邮政编码替换了验证功能，它可以工作！

Connector

Silverstripe 3设置图像上传memberprofil模块的最小宽度和最小高度

2 个答案: