我在Cake中遇到性能问题,生成图像。问题是当调用控制器函数时,Cake与DB建立连接,并且图像以“sync”加载,等待关闭最后一个连接(每个图像加载图像,等待0.5秒)。
这是我的控制器:
class ThumbnailController extends AppController {
var $uses = null;
var $components = array();
var $autoRender = false;
###########################################################
# PUBLIC
###########################################################
public function thumb($folder = null, $w=0, $h=0, $filename=null){
$this->thumbnail("default.jpg", $folder, $w, $h, $filename);
}
public function thumbMama($folder = null, $w=0, $h=0, $filename=null){
$this->thumbnail("iconopersonadh.png", $folder, $w, $h, $filename);
}
###########################################################
# PRIVATE
###########################################################
private function thumbnail($default_image, $folder = null, $w=0, $h=0, $filename=null){
session_write_close();
$img = WWW_ROOT.DS.$folder.DS.$filename;
if(!is_file($img)){
$img = WWW_ROOT.DS."img".DS.$default_image;
}
$img_info = pathinfo($img);
$filename = $img_info["filename"];
$extension = strtolower($img_info["extension"]);
$tn_filename = "tn-".$filename."-".$w."x".$h.".".$extension;
switch($extension){
case "gif":
header('Content-type: image/gif');
break;
case "png":
header('Content-type: image/png');
break;
default:
header('Content-type: image/jpeg');
break;
}
# COMPROBAMOS SI EXISTE UNA IMAGEN CACHEADA PARA NO GENERAR EL RECORTE AL VUELO
if(is_file(WWW_ROOT.DS."files".DS."tn".DS.$tn_filename)){
readfile(WWW_ROOT.DS."files".DS."tn".DS.$tn_filename);
}else{
$magic = new Imagick($img);
$magic->cropThumbnailImage($w, $h);
$magic->writeImage(WWW_ROOT.DS."files".DS."tn".DS.$tn_filename);
echo $magic;
//$this->log($img_info["basename"]." ---> ".$tn_filename, 'thumbnails-'.date("Ym"));
}
}
我需要强制CakePHP不加载任何数据库或建立连接,强制该函数只使代码没有“滞后”。
答案 0 :(得分:0)
如果您将此操作放入(或已经存在)单独的Controller中,只需将以下内容放入其模型中以避免任何数据库操作:
class Thumbnail extends AppModel {
public $useTable = false; // Don't use any db table
}
有关此问题的详细信息,请参阅the Cookbook。