Tag: magento

Magento Cache

关于Magento的Cache机制还有待进一步了解。目前我知道的是：

在local.xml更改Magento backend admin url以后，要Refresh Cache才会生效。

刚才我试了很久才想到要清除缓存，否则我还以为我没找对地方。

December 2, 2008
Magento Bug

我在Magento 1.1.8里发现一个可能的Bug: Category Design的值只有All store views的值起作用，针对各个store view分别做的不同的值均被忽略。

不过这暂时对我没什么影响，因为我的一个Root Category只对应一个store view。

November 30, 2008
关于Magento一次安装，多处使用的构想

WordPress可以一次安装，多处使用，Magento当然更有理由这么做了。

Magento强大的功能之一就是run multi websites，Magento内置了多站点运行的功能。我援引从WordPress安装管理探索出的经验，觉得即使Magento内置multi websites功能，各站点还是不要使用同一个document root为好，还是以一主多副软连接的方式为宜。

只是，我还是没有找到在后台隔离各站点的办法（假设它们由不同的web manager来经营）。我也无法控制上传目录，所有上传得文件都是存放在主域名的document root/{magento installatin path}/media下。

好在magento子目录安装，根目录显示还是做得到的。如将magento放置在document root/magento下，但前台url不出现magento，具体的做法是

1. 把index.php和.htaccess移到document root，其他文件都放置在document root/magento子目录

2. 把index.php修改成

<?php /** * Magento * * NOTICE OF LICENSE * * This source file is subject to the Open Software License (OSL 3.0) * that is bundled with this package in the file LICENSE.txt. * It is also available through the world-wide-web at this URL: * http://opensource.org/licenses/osl-3.0.php * If you did not receive a copy of the license and are unable to * obtain it through the world-wide-web, please send an email * to license@magentocommerce.com so we can send you a copy immediately. * * DISCLAIMER * * Do not edit or add to this file if you wish to upgrade Magento to newer * versions in the future. If you wish to customize Magento for your * needs please refer to http://www.magentocommerce.com for more information. * * @category   Mage * @package    Mage * @copyright Copyright (c) 2008 Irubin Consulting Inc. DBA Varien (http://www.varien.com) * @license    http://opensource.org/licenses/osl-3.0.php Open Software License (OSL 3.0) */

if (version_compare(phpversion(), ‘5.2.0’, ‘<‘)===true) {
echo ‘<div style=”font:12px/1.35em arial, helvetica, sans-serif;”><div style=”margin:0 0 25px 0; border-bottom:1px solid #ccc;”><h3 style=”margin:0; font-size:1.7em; font-weight:normal; text-transform:none; text-align:left; color:#2f2f2f;”>Whoops, it looks like you have an invalid PHP version.</h3></div><p>Magento supports PHP 5.2.0 or newer. <a href=”http://www.magentocommerce.com/install” target=””>Find out</a> how to install</a> Magento using PHP-CGI as a work-around.</p></div>’;
exit;
}

$mageFilename = ‘magento/app/Mage.php’;

if (!file_exists($mageFilename)) {
if (is_dir(‘downloader’)) {
header(“Location: downloader”);
} else {
echo $mageFilename.” was not found”;
}
exit;
}

require_once $mageFilename;

#Varien_Profiler::enable();

#Mage::setIsDeveloperMode(true);

#ini_set(‘display_errors’, 1);

umask(0);
Mage::run(‘default’);

3. 把.htaccess修改成：

############################################ ## uncomment these lines for CGI mode ## make sure to specify the correct cgi php binary file name ## it might be /cgi-bin/php-cgi

#    Action php5-cgi /cgi-bin/php5-cgi
#    AddHandler php5-cgi .php

############################################
## GoDaddy specific options

#   Options -MultiViews

## you might also need to add this line to php.ini
##     cgi.fix_pathinfo = 1
## if it still doesn’t work, rename php.ini to php5.ini

############################################
## this line is specific for 1and1 hosting

#AddType x-mapp-php5 .php
#AddHandler x-mapp-php5 .php

############################################
## default index file

DirectoryIndex index.php

<IfModule mod_php5.c>

############################################
## adjust memory limit

#    php_value memory_limit 64M
php_value memory_limit 128M
php_value max_execution_time 18000

############################################
## disable magic quotes for php request vars

php_flag magic_quotes_gpc off

############################################
## disable automatic session start
## before autoload was initialized

php_flag session.auto_start off

############################################
## enable resulting html compression

#php_flag zlib.output_compression on

###########################################
# disable user agent verification to not break multiple image upload

php_flag suhosin.session.cryptua off

###########################################
# turn off compatibility with PHP4 when dealing with objects

php_flag zend.ze1_compatibility_mode Off

</IfModule>

<IfModule mod_security.c>
###########################################
# disable POST processing to not break multiple image upload

SecFilterEngine Off
SecFilterScanPOST Off
</IfModule>

<IfModule mod_deflate.c>

############################################
## enable apache served files compression
## http://developer.yahoo.com/performance/rules.html#gzip

# Insert filter
#SetOutputFilter DEFLATE

# Netscape 4.x has some problems…
#BrowserMatch ^Mozilla/4 gzip-only-text/html

# Netscape 4.06-4.08 have some more problems
#BrowserMatch ^Mozilla/4\.0[678] no-gzip

# MSIE masquerades as Netscape, but it is fine
#BrowserMatch \bMSIE !no-gzip !gzip-only-text/html
# Don’t compress images
#SetEnvIfNoCase Request_URI \.(?:gif|jpe?g|png)$ no-gzip dont-vary

# Make sure proxies don’t deliver the wrong content
#Header append Vary User-Agent env=!dont-vary

</IfModule>

<IfModule mod_ssl.c>

############################################
## make HTTPS env vars available for CGI mode

SSLOptions StdEnvVars

</IfModule>

<IfModule mod_rewrite.c>

############################################
## enable rewrites

Options +FollowSymLinks
RewriteEngine on

############################################
## you can put here your magento root folder
## path relative to web root

#RewriteBase /magento/

############################################
## workaround for HTTP authorization
## in CGI environment

RewriteRule .* – [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]

############################################

#This is my creation for installing magento under a subfolder.

############################################

RewriteCond %{REQUEST_URI} ^/(media|skin|js)/

RewriteRule (.*) magento/$1 [l]

############################################
## always send 404 on missing files in these folders

RewriteCond %{REQUEST_URI} !^/(media|skin|js)/

############################################
## never rewrite for existing files, directories and links

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-l

############################################
## rewrite everything else to index.php

RewriteRule .* index.php [L]

</IfModule>

############################################
## Prevent character encoding issues from server overrides
## If you still have problems, use the second line instead

AddDefaultCharset Off
#AddDefaultCharset UTF-8

<IfModule mod_expires.c>

############################################
## Add default Expires header
## http://developer.yahoo.com/performance/rules.html#expires

ExpiresDefault “access plus 1 year”

</IfModule>

############################################
## By default allow all access

Order allow,deny
Allow from all

############################################
## If running in cluster environment, uncomment this
## http://developer.yahoo.com/performance/rules.html#etags

#FileETag none

November 27, 2008
Magento SID

如果magento base url 为 goods-pro.com，那么用www.goods-pro.com 访问时，页面中的链接会带有SID，这是为了跨域名访问时，会话不丢失。

为了SEO，就得避免SID，为此goods-pro.com和www.goods-pro.com只能选择一个做base url，把另外一个301跳转到base url。这里我个人比较爱好no-www的方案：

RewriteEngine On RewriteCond %{HTTP_HOST} ^www\.(.+)$ [NC] RewriteRule ^(.*)$ http://%1/$1 [R=301,L]

November 27, 2008
What Makes A Good Web Program

我看问题可能有局限性，但我现在判断程序好坏的必要非充分条件之一是：这套程序能否充分利用Apache Url Rewrite。换句话说，如果是php程序，这套程序的前台页面是否由一个index.php来产生。

以这个条件来看，Zen Cart算好，Magento当然更好，osCommerce就不算好；Drupal / Joomla 都算好，WordPress 当然算是典范，Xoops 就不怎么样了。

也是因为这个原因，我放弃关注Xoops——痛苦地放弃，尽管曾经它是我的最爱，尽管它有某些功能很独到。

November 25, 2008
It’s all Flash’s Fault

不经意中，电脑被装上了Flash 10。等我发现magento后台不能浏览和上传文件时，我怎么也没把原因和Flash 10联系起来。

首先我以为是magento 1.1.5升级到1.1.6造成的，因为我在1.1.5还成功上传过文件。当我专门为此搞了个试验，全新安装了一个magento 1.1.5来上传图片，还是无功而返。

浏览器提示javascript出错，可是我实在想不明白为什么以前可以，现在不可以。为此浪费了无数个晚上，终于让我找到了答案，Flash 10!

Flash 对此的解释冠冕堂皇：为了安全，Flash 10不再允许间接调用文件浏览对话框，文件浏览对话框只能由鼠标动作触发。很不幸，作为magento的上传部件，SWFUpload采用的是间接调用的方式，落入了Flash 10的打击范围。

我本来就不喜欢Flash，这次Flash 10又浪费了我这么多时间，magento至少被我拆装了3次！尽管它有千万个安全理由，我还是对它敬而远之。

November 20, 2008
Godaddy mod_rewrite

I have two Godaddy accounts now. One is for a dedicated server, the other is for a deluxe share hosting package. Actually I do not need any share hosting once I get a dedicated server, but someone bought this for me, so I spent some time inspecting how good / bad it is.

I should regard myself as a Godaddy loyal client. I am 100% satisfied with their dedicated server service, and also, Godaddy domain management is the most powerful and convenient I have ever seen. However, Godaddy share hosting is definitely not something workable for me.

I am recently struggling at setting up magento in Godaddy share hosting. Magento setup is 50% successful. I mean, magento can run homepage, wishlist, popular search, etc all right, but it run into blank pages at many points, e.g. about us, customer service, etc. Initially I thought it was mod_rewrite problem, so I used phpinfo to check. I did not find mod_rewrite enabled. I quickly installed wordpress to double check, and if I enable wordpress search engine friendly url features, it runs into 404 error. I searched Godaddy Knowledge Base (FAQ centre). It says:

Mod_rewrite is an Apache web server module installed on all of our Linux servers by default; it does not have to be installed or enabled. Our Linux hosting accounts support most mod_rewrite functionality.

You do not need to enable mod_rewrite in your httpd.conf, as this is handled at a global level. All you need to do is add the desired code to the body of your .htaccess file.

For more information about mod_rewrite see the Apache Module mod_rewrite documentation.

NOTE:The .htaccess file containing the rewrite rules must be in the same directory as the target files.

This article did not help me. So I had to submit a ticket. Within several hours, I got the reply (I am satisfied with Godaddy support reponse speed) but it only contained the same words as the answer from Godaddy Knowledge Base. I googled “godaddy mod_rewrite” after I could not get a clear reply from Godaddy. I should have googled it earlier because soon I found someone mentioned rewrite rules in .htaccess with Godaddy share hosting DO NOT TAKE IMMEDIATE EFFECT.

This solved all my queries. Although I still do not know how Godaddy hide mod_rewrite from phpinfo, after several hours of being installed, wordpress is working properly.

However, magento is still not running properly. I assume it has nothing to do with mod_rewrite settings. By all means, to my opinion, magento is not suitable to run on a share hosting package. Installing magento on Godaddy share hosting account is only for my curiosity. I have been running magento successfully on my dedicated server.

September 25, 2008
Mage_All_Latest

Magento用Connect Manager 来管理升级文件，真得很好。但这么先进的方式运行在Linux上，我一时有点无所适从。比如在Windows下，Magento Connect Manager能正常运行，但在Fedora服务器上，Existing Extensions项下空白一片，怎么办？

查了好久，找到方法：Enter ‘magento-core/Mage_All_Latest‘ in the extension key area.

September 16, 2008
Magento Base

最近发现我的magento后台不能更新数据，但系统每次都提示保存成功，一开始我还以为数据库出了问题。

查了好久的原因，这才发现是因为我把www.goods-pro.com全部重写到goods-pro.com (non-www)的缘故。设定301规则之前，我没有更改Magento Base。这样，magento base记录的base url跟我维护时登录的url是不同的，大概为了安全考虑，magento不允许保存数据。但是，如果不允许，早说嘛，浪费我好长时间找原因。

September 14, 2008