通过BuildTask将外部图库中的图像添加到SilverStripe网站

Question

我正在制作Silverstripe构建任务以从外部图库获取许多图像，并使用必要的数据库链接将其创建/上载到/assets/images/gallery文件夹中，并链接至GalleryPage 。

因此，我加载Url列表，将图像显示到浏览器，现在如何将图像保存到资产文件夹中，并提供必要的GalleryPage数据库链接？

class ImportGalleryTask extends BuildTask { 
    public function writeImage($data) { 
     //$data->Title 
     //$data->Filename 
     //$data->Url 
     //this is the external url that I can output as an image to the browser 
     // 
     // folder to save image is 'assets/images/gallery' 
     // 
     // ? save into folder and database and associate to PageImageBelongsToID ? 
    } 
} 

Answer 1

您可以使用copy将远程文件复制到本地文件系统。尽管PHP必须被配置为支持allow_url_fopen。

所以，你得到的函数可能是这样的：

/** 
* @param $data 
* @return null|Image return written Image object or `null` if failed 
*/ 
public function writeImage($data) 
{ 
    // The target folder for the image 
    $folder = Folder::find_or_make('images/gallery'); 

    // assuming that $data->Filename contains just the file-name without path 
    $targetPath = $folder->getFullPath() . $data->Filename; 

    // Check if an image with this name already exists 
    // ATTENTION: This will overwrite existing images! 
    // If you don't want this, you need to implement this differently 
    if(
     file_exists($targetPath) && 
     $image = Image::get()->where(array(
      '"Name" = ?' => $data->Filename, 
      '"ParentID" = ?' => $folder->ID 
     ))->first() 
    ){ 
     // just copy the new file over… 
     copy($data->Url, $targetPath); 
     // … and delete all cached images 
     $image->deleteFormattedImages(); 
     // and we're done 
     return $image; 
    } 

    // Try to copy the file 
    if (!copy($data->Url, $targetPath)) { 
     return null; 
    } 

    // Write the file to the DB 
    $image = Image::create(array(
     'Name' => $data->Filename, 
     'ParentID' => $folder->ID, 
     'Filename' => $folder->getRelativePath() . $data->Filename 
    )); 

    $image->write(); 
    return $image; 
}