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二��域名的java实现

陈刚 — Wed, 29 Dec 2010 15:19:00 GMT

最�q�在做一个自建网站��^�?http://www.yowob.com )�Q�其他涉及到为用��h��供一个二�U�域名功能，实现�Ҏ��如下�Q?br />
(1)首先要在域名服务商端做一个泛域名解析. 我用的是godaddy.com,��新��Z��个A记录(host=*,point to指向我的服务器的ip),�q�样所有二�U�域名都会�{到我的服务器来了

(2)接着在web.xml配一个自已写的域名过滤器,

URLFilter

com.yowob.commons.URLFilter

URLFilter

�q��o器的代码如下。这里先��二�U�域名和全球域名和用户ID的映��?保存在一个数据表�? 然后讉K��q�来时对地址做一个判�? 再取出对应的用户ID. 再�{一下就行了. 我的静态文仉��在static目录�Q�所以还加了一个static的判断�?br /> 比如: http://time.you.com/board/21 用time对应用户ID�?,则访问效果有 http://www.you.com/6/board/21相同, 不过地址栏还是显�C?a >http://time.you.com/board/21�?br /> 再比如：htttp://www.userdomain.com/board/21�Q�这个是用户ID�?的全球域名，讉K��效果也和上面一栗��?br />

package com.yowob.commons;

import java.io.IOException;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;

import org.apache.commons.lang.StringUtils;
import org.apache.commons.lang.math.NumberUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import com.yowob.Constants;
import com.yowob.dao.SiteDAO;
import com.yowob.dto.SiteDTO;

public class URLFilter implements Filter {
    private static final Log log = LogFactory.getLog(URLFilter.class);
    private static final String DOMAIN_END = "." + Constants.DOMAIN; //.you.com
    private static final Map<String, Long> NAME_MAP = new HashMap<String, Long>();
    private static final Map<String, Long> DOMAIN_MAP = new HashMap<String, Long>();

    @Override
    public void init(FilterConfig filterConfig) throws ServletException {
        log.info("------------------------------init");
        SiteDAO siteDAO = new SiteDAO();
        List<SiteDTO> list = siteDAO.getAll();
        for (SiteDTO siteDTO : list) {
            String name = siteDTO.getName();
            if (StringUtils.isNotEmpty(name)) {
                NAME_MAP.put(name, siteDTO.getId());
            }
            String domain = siteDTO.getDomain();
            if (StringUtils.isNotEmpty(domain)) {
                DOMAIN_MAP.put(domain, siteDTO.getId());
            }
        }
    }

    public static void updateName(String oldValue, String newValue, Long siteId) {
        if (StringUtils.equals(oldValue, newValue)) {
            return;
        }
        if (StringUtils.isNotEmpty(oldValue)) {
            NAME_MAP.remove(oldValue);
        }
        if (StringUtils.isNotEmpty(newValue)) {
            NAME_MAP.put(newValue, siteId);
        }
    }

    public static void updateDomain(String oldValue, String newValue, Long siteId) {
        if (StringUtils.equals(oldValue, newValue)) {
            return;
        }
        if (StringUtils.isNotEmpty(oldValue)) {
            DOMAIN_MAP.remove(oldValue);
        }
        if (StringUtils.isNotEmpty(newValue)) {
            DOMAIN_MAP.put(newValue, siteId);
        }
    }

    @Override
    public void destroy() {
        log.info("------------------------------destroy");
    }

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse response, FilterChain filterChain) throws IOException, ServletException {
        HttpServletRequest request = (HttpServletRequest) servletRequest;
        String requestURI = request.getRequestURI();
        String serverName = request.getServerName().toLowerCase();
        String realURI = getRealRequestURI(serverName, requestURI);
        request.getRequestDispatcher(realURI).forward(request, response);
    }

    private String getRealRequestURI(String serverName, String requestURI) {
        if (Constants.WWW_DOMAIN.equals(serverName) || requestURI.startsWith("/static/") || Constants.DOMAIN.equals(serverName)) {
            return requestURI;
        }
        if (serverName.endsWith(DOMAIN_END)) {
            String secondDomain = serverName.substring(0, serverName.indexOf("."));
            //�|�站id
            if (NumberUtils.isNumber(secondDomain))
                return getURI(secondDomain, requestURI);
            //�|�站英文�?/span>
            Long siteId = NAME_MAP.get(secondDomain);
            if (siteId == null) {
                //保留的二�U�域�?/span>
                if (Constants.isPrivateSecondDomain(secondDomain)) {
                    return requestURI;
                }
                return "/message?msg=不存在二�U�域�?/span>" + secondDomain;
                //                throw new RuntimeException("do not exist second domain: " + secondDomain);
            }
            return getURI(siteId + "", requestURI);
        }
        //域名
        Long siteId = DOMAIN_MAP.get(serverName);
        if (siteId == null) {
            return requestURI;
        } else {
            return getURI(siteId + "", requestURI);
        }
    }

    private static String getURI(String siteId, String requestURI) {
        if (requestURI.equals("/")) {
            return "/" + siteId;
        } else {
            return "/" + siteId + requestURI;
        }
    }

}

其他一些小技巧：
�Q�１�Q��ؓ了便于本机测试，可以修改windows 的hosts文�g。我的如下：

127.0.0.1       localhost
127.0.0.1       you.com
127.0.0.1       www.you.com
127.0.0.1       time1.you.com
127.0.0.1       time2.you.com
127.0.0.1       6.you.com
127.0.0.1       www.bobo.com

�Q�２�Q�web��늚�各种地址则要注意相对路径的问题。主要考虑
首先讄��Q�或其中地址最后要加一�?
然后��面中其他地址前面不加/�Q�就是相对地址�Q�以地址栏�ؓ基础�Q�。加�?�Q�则是绝对地址�?br />

陈刚 2010-12-29 23:19 发表评论

VIM的常用插�?配置文�g+资料

陈刚 — Thu, 18 Oct 2007 10:15:00 GMT

用VIM来开发rails也挺不错的，自完代码完成�Q�代码颜色等功能都有。也��netbean、eclipse之外的轻量��选择吧�?br /> 我把VIM的常用插�Ӟ��自己用的配置文�g�Q�收�|�的一些资料一�q�打包了�Q�省得初用VIM的�h找来扑֎��费旉��?br />
http://www.tkk7.com/Files/chengang/myvim.zip

在ubuntu7.10中的gvim出现��q��Q�这旉��要在�ȝ��录下的�?vimrc”文件中加上定义字体的一句。我用的是“微软雅黑”字体所以此句�ؓ�Q?br />

set guifont=YaHei\ Consolas\ Hybrid\ 10

注意�Q�字体名中有�I�格的，用斜杠分开�Q�而且斜杠后面一定要有一个空根{�?0是字体大��，前面有一个空根{�?br />

陈刚 2007-10-18 18:15 发表评论

个性化��面布局的设计思考与Rails初步实现

陈刚 — Wed, 10 Oct 2007 16:00:00 GMT

象博客，以及google的iGoogle�Q�都可以个性化��面布局---寚w��面模块增删改�Q�以及调整位�|�。这�U�效果是如何实现的呢�Q�在我的��目中也面��? �q�个需求。我最初的解决�Ҏ��是创建几个典型的rhtml布局�l�合。但�q�远�q�不够，而且不灵�z�，在�Ş式上也不�l�一。于是我再次修改了设计，之后��g��可以基本解决�q�个问题了。希望感兴趣的朋友一��h��讨论�?br />
�q�个设计其实很简单，��是“引�?配置�?-��M��面只定义一个rthml�Q�可以把它看做页面引擎，然后用一个配�|�文件指定了��面所应具有的模块和数据�? ��面模块��p��一个个装有数据的盒子，通过“页面引�?+ 配置文�g”把�q�些盒子�l�合��h��Q�象搭积木一栗��页面引擎是各用户共用的�Q�配�|�文件是各用��L��有的�Q�这样一装配��h��Q�就形成了用��L��个性化��面�?br />
剩下的重点就是怎么定义配置文�g。首先是要划清配�|�文件的责�Q界线----它只负责定义盒子里的数据�Q�还有盒子的嵌套关系�Q�而大��和位置�{�布局斚w��则全部交�l�CSS去负责�?br />
上面是初步想法，下面看看具体实现�Q�代码仅供参�?br />
以下是某个用��L��配置文�g�Q�我没用XML�Q�而是用YAML�Q�。board_1是指ID=1�q�个栏目所用的配置定义。topContent是一�?div>

的id��|��我把每个栏目的页面分�?span>topContent��、sideContent边（左或右由CSS军_��Q��?/span>primaryContent 主要、bottomContent底。topic是指��d��一个模块（盒子�Q�，昄��一个主题内宏V��和topic�c�M��是还有显�C�图像的image、显�C�Z��题列表的topics、显�C�分�c�d��表的categories�{�等�{�等。它们各有不同的属性��|��比如topic模块�Q�它需要定指它的主题id�Q�以及它所用的 view(topics/_show_hot.rhtml or topics/_show.rhtml�{�等)�?br />
�Q�虽然这个配�|�文件抽象得�q�不够，但这样子已经可以解决我的需要了�Q�那��?/span>暂时�q�样先了。）

template.yml

board_2:
board_1:
- topContent:
- topic:
topic_id: 7
view: topics/show_hot
- sideContent:
- image:
url: /images/news.jpg
- categories:
board: 5
view: tree
- topics:
board: 5
per_page: 4
view: index_simple
- topics:
board: 6
- primaryContent:
- topics:
board: 4
view: index
- topic:
topic_id: 7
view: util/box
board_3:

然后在controller里把配置文�g��d��Q�再转化成模型类。我把各个界面模块看做一个个盒子Box
�q�是它的��Box

ruby 代码

class Box
attr_accessor :html_id, :view, :boxes
def initialize
@boxes=[]
end
end

�q�是topic模块�?br />

ruby 代码

class TopicBox < Box
attr_accessor :topic_id
end

�q�是Image模块�?br />

ruby 代码

class ImageBox < Box
attr_accessor :url
end

.....�{?�{�，其他的Box子类大同��异

然后在一个controller里把�q�些配置信息转成Box模型�c?br />

ruby 代码

templates = YAML::load(File.read("public/uploads/#{user_id}/config/template.yml"))
template = templates.find{|o| o[0]=="board_#{@board.id}" }
args = template[1]
@boxes = []
args.each do |arg1_hash|
arg1_hash.each do |key1, value1|
board_box = BoardBox.new
board_box.html_id = key1
@boxes << board_box
value1.each do |arg2_hash|
arg2_hash.each do |key2, value2|
case key2
when 'topics'
box = TopicsBox.new
box.board_id = value2['board']
box.per_page = value2['per_page']||2
box.view = value2['view']||'index_simple'
board_box.boxes << box
when 'categories'
box = CategoriesBox.new
box.board_id = value2['board']
box.view = value2['view']||'list'
board_box.boxes << box
when 'image'
box = ImageBox.new
box.url = value2['url']
board_box.boxes << box
when 'topic'
box = TopicBox.new
box.topic_id = value2['topic_id']
box.view = value2['view']||'util/box'
board_box.boxes << box
end
end
end
end
end

最后是它页面引擎（逻辑代码和页面代码�؜在一��P��比较丑陋�Q?

ruby 代码

<% @boxes.each do |box1| %>
"<%=box1.html_id%>"> /span>
<% box1.boxes.each do |box2|
p1 box2.class.to_s
case box2.class.to_s
when 'TopicsBox'
board_id = box2.board_id
if board_id
board = Board.find(board_id)
topics = Topic.by_board_id(board_id, :per_page => box2.per_page)
%>
<%= render(:partial => "topics/#{box2.view}", :locals => {:title =>board.title, :topics => topics })%>
<%end
when 'CategoriesBox'
board_id = box2.board_id
if board_id
board = Board.find(board_id)
categories = board.categories
%>
<%= render :partial => "categories/#{box2.view}", :locals => {:board =>board, :categories => categories } %>
<%end%>
<%when 'ImageBox'%>
<%= box_tag :header=>false%>
<%=image_tag(box2.url, :border => 0) %>
<%= end_box_tag %>
<%when 'TopicBox'
topic = Topic.find(box2.topic_id) %>
<%=render(:partial => "#{box2.view}", :locals => {:title =>topic.title, :content => topic.content, :topic => topic })%>
<%end
end%>

�q�样�Q�以后想在页面上增加删除什么模块，修改配置文�g��p��了。当然给用户用，�q�必��d��用AJAX来写个GUI界面�Q��M��能让用户手工��L��配置文�g吧�?br />

陈刚 2007-10-11 00:00 发表评论

陈刚 — Wed, 26 Sep 2007 10:49:00 GMT

�q�去�Q�我们上传图片，一般都是一个文本框加一个“浏览”按钮，通过��览按钮选取本地的图片，然后在提交表单后的逻辑中将囄��上传��x��务器。现在，我们已经把FCKEditor应用在了我们的系�l�里�Q�而FCKEditor中带了有了图片上传和��览功能。所以我��想让这个“浏览”按钮不是从本地选取囄��Q�而是从FCKEditor传到服务器上的图片中来选�D。也��是把FCKEditor的“浏览”按钮，抽取出来�?br />

�?陈刚 www.chengang.com.cn 转蝲请保留出�?br />

在阅读FCKEditor的源码之后，做如下处理�?br />
1. 新增两个javascript函数�?br />

var currentImageTextID;

//FCKEditor的文件浏览窗关闭后，会调用此函数�Q��ƈ把所选图片的url传入�?/span>
function SetUrl(url){
  document.getElementById(currentImageTextID).value=url;
}

//imageTextID: 囄��文本框的ID�?/span>
//uploadPath: 服务器的囄��目录
//type: ��览�c�d��Q�值可为Image/Flash/File/Media�Q�如果�ؓ�I�字�Ԍ��则表�C�浏览所有类型的文�g
function OpenImageBrowser(imageTextID, uploadPath, type ) {
  currentImageTextID = imageTextID;
  window.open('/javascripts/fckeditor/editor/filemanager/browser/default/browser.html?uploaded='+uploadPath +'&Type='+type+'&Connector=/fckeditor/command','Browse/Upload Images','toolbar=no,status=no, resizable=yes,dependent=yes, scrollbars=yes,width=600,height=400')
}

2.在View中这样��?br />

标志囄��:
<input id="topic_image" name="topic[image]" size="30" type="text">
<input value="��览服务�?/span>" onclick="OpenImageBrowser('topic_image', '/uploads/s<%= params[:user_id]%>', 'Image')" type="button">

陈刚 2007-09-26 18:49 发表评论

陈刚 — Wed, 26 Sep 2007 02:13:00 GMT

一个多用户的系�l�，上传囑փ�文�g�{�，希望不同用户的图像上传到它专有的目录里。我最初查到在PHP版的FCKEditor是通过讄��$Config('UserFilesPath')来实玎ͼ�但Rails版的FCKEditor没有此项讄��Q�搜索UserFilesPath关键字后做出此判断）。接着�Q�我查看了FCKEditor关键的fckeditor_controller.rb的源代码�Q�似乎它�q�不支持此项讄��。再看javaeye是怎么用FCKEditor的，发现它放弃了FCKEditor的上传功能。google了半天，除了那些转来转去的相同内容的帖子之外�Q�搞不懂有了google之后�Q�怎么�q�会有�h费劲去�{帖别人的文章�Q�，一点营��M��没有。在JavaEye发了个求助帖�Q�没人理 :-( �?传说中高手云集的JavaEye�Q�其Rails版块真是��h��Q�给人阴飕飕的感觉。没办法�Q�自己改源代码吧�?br />

�?陈刚 www.chengang.com.cn 转蝲请保留出�?br />

1.修改fckeditor_controller.rb�Q�把它那几个private�Ҏ��修改如下�Q?br />

  private
  def current_directory_path
    base_dir = "#{RAILS_ROOT}/public"

    #TODO 在创建用��h��Q�就建立好目录。这时可以去掉这部䆾代码�Q�提高运行效率�?br />    ("#{params[:uploaded]||UPLOADED}/#{params[:Type]}").split('/').each do |s|
    next if s==''
        base_dir += '/' + s
        Dir.mkdir(base_dir,0775) unless File.exists?(base_dir)
    end

    check_path("#{base_dir}#{params[:CurrentFolder]}")
  end

  def upload_directory_path
    uploaded = @request.relative_url_root.to_s+"#{params[:uploaded]||UPLOADED}/#{params[:Type]}"
    "#{uploaded}#{params[:CurrentFolder]}"
  end

  def check_file(file)
    # check that the file is a tempfile object
    unless "#{file.class}" == "Tempfile" || "#{file.class}" == "StringIO"
      @errorNumber = 403
      throw Exception.new
    end
    file
  end

  def check_path(path)
    exp_path = File.expand_path path
    if exp_path !~ %r[^#{File.expand_path(RAILS_ROOT)}/public#{params[:uploaded]||UPLOADED}]
      @errorNumber = 403
      throw Exception.new
    end
    path
  end

另外�Q�它前面的常量UPLOADED_ROOT也没用了�Q�可以删掉�?br />

2. 在上面的代码�?span style="color: rgb(0, 0, 0);">params[:uploaded]是关键，它就是我们动态定义的上传目录。该值来自于FCKEditor的一些html��面�Q�它是通过get参数传入的。修改browser.html文�g�Q�如下粗体部份）�Q�在它的url��h��中把我们定义目录加入到get参数列中�Q�这样它��可以传�?/span>fckeditor_controller.rb里了�?br />

var sServerPath = GetUrlParam( 'ServerPath' ) ;
if ( sServerPath.length > 0 )
    oConnector.ConnectorUrl += 'ServerPath=' + escape( sServerPath ) + '&' ;

var sUploaded = GetUrlParam( 'uploaded' ) ;
if ( sUploaded.length > 0 )
    oConnector.ConnectorUrl += 'uploaded=' + escape( sUploaded ) + '&' ;

oConnector.ResourceType        = GetUrlParam( 'Type' ) ;
oConnector.ShowAllTypes        = ( oConnector.ResourceType.length == 0 ) ;

3. 上面的GetUrlParam( 'uploaded' ) 的值来自于fckcustom.js。修改fckcustom.js�Q�如下粗体部份）�Q�把uploaded加入到get参数列中�?br />

// CHANGE FOR APPS HOSTED IN SUBDIRECTORY
FCKRelativePath = '';

// DON'T CHANGE THESE
FCKConfig.LinkBrowserURL = FCKConfig.BasePath + 'filemanager/browser/default/browser.html?Connector='+FCKRelativePath+'/fckeditor/command';
FCKConfig.ImageBrowserURL = FCKConfig.BasePath + 'filemanager/browser/default/browser.html?uploaded='+FCKConfig.uploaded+'&Type=Image&Connector='+FCKRelativePath+'/fckeditor/command';
FCKConfig.FlashBrowserURL = FCKConfig.BasePath + 'filemanager/browser/default/browser.html?uploaded='+FCKConfig.uploaded+'&Type=Flash&Connector='+FCKRelativePath+'/fckeditor/command';

FCKConfig.LinkUploadURL = FCKRelativePath+'/fckeditor/upload';
FCKConfig.ImageUploadURL = FCKRelativePath+'/fckeditor/upload?Type=Image&uploaded='+FCKConfig.uploaded;
FCKConfig.FlashUploadURL = FCKRelativePath+'/fckeditor/upload?Type=Flash&uploaded='+FCKConfig.uploaded;
FCKConfig.AllowQueryStringDebug = false;
FCKConfig.SpellChecker = 'SpellerPages';

// ONLY CHANGE BELOW HERE
FCKConfig.SkinPath = FCKConfig.BasePath + 'skins/silver/';
FCKConfig.AutoDetectLanguage = false ;
FCKConfig.DefaultLanguage = 'zh-cn' ;
FCKConfig.FontNames = '微��Y雅黑;宋体;黑体;隶书;楷体_GB2312;Arial;Comic Sans MS;Courier New;Tahoma;Times New Roman;Verdana' ;

FCKConfig.ToolbarSets["Simple"] = [
    ['Source','-','FitWindow','Preview','-','Templates'],
    ['PasteText','PasteWord'],
    ['Undo','Redo','Find','Replace'],
    '/',
    ['RemoveFormat','Bold','Italic','Underline','StrikeThrough'],
    ['OrderedList','UnorderedList','Outdent','Indent'],
    ['JustifyLeft','JustifyCenter','JustifyRight','JustifyFull'],
        ['TextColor','BGColor'],
    ['Link','Unlink','Anchor'],
    ['Image','Flash','Table','Rule','Smiley'],
    '/',
    ['Style','FontFormat','FontName','FontSize']
] ;

4. 上面FCKConfig.uploaded的值来自于fckeditor.rb。在fckeditor.rb中加入一句（如下�_�体所�C�）�?br />

      javascript_tag( "var oFCKeditor = new FCKeditor('#{id}', '#{width}', '#{height}', '#{toolbarSet}');\n"+
                      "oFCKeditor.BasePath = \"#{base_path}\"\n"+
                      "oFCKeditor.Config['CustomConfigurationsPath'] = '../../fckcustom.js';\n"+
                      "oFCKeditor.Config['uploaded'] = '#{options[:path]}';\n"+
                      "oFCKeditor.ReplaceTextarea();\n")

5.不过上面oFCKeditor.Config['uploaded']的��D��传到fckcustom.js的FCKConfig.uploaded里，�q�需要修改fckeditorcode_gecko.js和fckeditorcode_ie.js�Q�这两个文�g对javascript�q�行了压�~�处理，修改��h��较难操作�Q�。我是参考了oFCKeditor.Config['CustomConfigurationsPath'] �q�个参数的蝲入实玎ͼ�才找到这�U�鸟不生蛋的地方。搜索这两个文�g的关键字CustomConfigurationsPath�Q�找到如下一行，然后加入一个else if判断(如下�_�体所�C�）�?br />

if (D=='CustomConfigurationsPath') FCKConfig[D]=E;else if (D=='uploaded') FCKConfig[D]=E;else if (E.toLowerCase()=="true") this.PageConfig[D]=true;

6.最后在fckeditor.rb里的#{options[:path]}来自于我们前台的view了。如下粗体所�C�，把标准的fckeditor_textarea新增加了一个参敎ͼ�其中params[:user_id]是把用户的ID值做�?/span>目录名。这样就实现了动态改变FCKEditor的上传目录�?/span>

<%=fckeditor_textarea(:topic, :content, :ajax => true, :toolbarSet => 'Simple', :height => '400px', :path => "/uploads/#{params[:user_id]}") %>

修改完后需要重启WEB服务�Q�最后别忘记把public/javascripts/fckeditor和vendor/plugins/fckeditor/public/javascripts同步一下，原因见http://www.tkk7.com/chengang/archive/2007/09/24/147867.html

陈刚 2007-09-26 10:13 发表评论

定制FCKEditor�Q�以及��其中文化

陈刚 — Mon, 24 Sep 2007 10:24:00 GMT

安装完FCKEditor�q�是不够的，首先��面临两个�Q务：�Q?�Q�将它中文化。（2�Q�有些功能不需要的�Q�就需要把它去掉。FCKEditor在这斚w��做得很好�Q�其可定制性相当强�?br />

�?陈刚 www.chengang.com.cn

首先�Q�我们来看看FCKEditor在Rails中的�q�行�Ҏ��，其插件主要是安装在vendor/plugins/fckeditor。主要的代码在vendor/plugins/fckeditor/public/javascripts�Q�其中fckcustom.js是配�|�文�Ӟ��另外更深一层的子目录fckeditor中还有一个fckconfig.js也是配置文�g。fckcustom.js配置的优先顺序大于fckconfig.js�Q�因此一般修改fckcustom.js��可以了�Q�不必去动fckconfig.js�?br />
在启动WEBrick( ruby script/server)�Ӟ��会自动把vendor/plugins/fckeditor/public/javascripts的内容复制到public/javascripts目录。因此如果你修改了FCKEditor的配�|�文件之后，需要把复制到public/javascripts目录的FCKEditor相关文�g删除掉，然后再重启WEBrick。当�Ӟ��你也可以直接修改public/javascripts目录的FCKEditor的缓存的配置文�g�Q�这样不必重启WEBrick�Q�就可以立即看到修改效果。不�q�徏议你在完成修改后�Q�同时也要更新vendor/plugins/fckeditor/public/javascripts下的配置文�g�Q�毕竟public/javascripts里的应该��是临时文�g�?br />

1.中文�?br />
在fckcustom.js里加入两��（�_�体昄��Q?br />

FCKConfig.SkinPath = FCKConfig.BasePath + 'skins/silver/';
FCKConfig.AutoDetectLanguage = false ;
FCKConfig.DefaultLanguage = 'zh-cn' ;

2. 定制FCKEditor的工��h��
修改fckcustom.js里的如下��目�Q�增删改自便�?br />

FCKConfig.ToolbarSets["Simple"] = [ 。。�?。。�?br />

�q�里要注意一点，有些�|�上文章�?span style="color: rgb(0, 0, 0);">:toolbarSet写成�?/span>:toolbarKit�Q�这是错误的。如果你发现对工��h��的配�|�不起作用，那么要检查一下。正��的写法如下�Q?br />

<%=fckeditor_textarea(:topic, :content, :ajax => true, :toolbarSet => 'Simple', :width => '100%', :height => '300px') %>

陈刚 2007-09-24 18:24 发表评论

error_messages_for的中文化

陈刚 — Wed, 19 Sep 2007 09:35:00 GMT

在Rails中error_messages_for为国际化的考虑不是很周全，它显�C�的是模型的字段名称�Q�这对于用户来说是不友好的。�ؓ了解册��个问题，只能改它的源码了----��如下方法，攑օ�ApplicationHelper

�?陈刚 www.chengang.com.cn 转蝲请声明出�?/span>

def error_messages_for(*params)
    #add by glchengang
    key_hash = {}
    if params.first.is_a?(Hash)
      key_hash =  params.first
      params.delete_at(0)
    end
    #add end

    options = params.last.is_a?(Hash) ? params.pop.symbolize_keys : {}
    objects = params.collect {|object_name| instance_variable_get("@#{object_name}") }.compact
    count   = objects.inject(0) {|sum, object| sum + object.errors.count }
    unless count.zero?
      html = {}
      [:id, :class].each do |key|
        if options.include?(key)
          value = options[key]
          html[key] = value unless value.blank?
        else
          html[key] = 'errorExplanation'
        end
      end
      # change by glchengang
      header_message = "�?{count}个错�?/span>"
#       header_message = "#{pluralize(count, 'error')} prohibited this #{(options[:object_name] || params.first).to_s.gsub('_', ' ')} from being saved"

      #add by glchengang
      error_messages = objects.map do |object|
        temp = []
        object.errors.each do |attr, msg|
          temp << content_tag(:li, (key_hash[attr] || attr) + msg)
        end
        temp
      end
      #add end

#        error_messages = objects.map {|object| object.errors.full_messages.map {|msg| content_tag(:li, msg) } }
      content_tag(:div,
        content_tag(options[:header_tag] || :h2, header_message) <<
#           content_tag(:p, 'There were problems with the following fields:') <<
          content_tag(:ul, error_messages),
        html
      )
    else
      ''
    end
  end

使用依然兼容老的方式�Q�你也可以传入一个哈希表�Q�把模型字段昄��成对应的中文�Q�示例如下：

<%=
h = {'username'=>'用户�?/span>', 'password'=>'密码'}
error_messages_for h, :user
%>

另外�Q�还要在environment.rb的最后插入以下代码：

errors = ActiveRecord::Errors.default_error_messages
errors[:taken] = '已经被��?/span>'
errors[:blank] = '不能为空'

陈刚 2007-09-19 17:35 发表评论

让will_paginate的分��|��持ajax

陈刚 — Sun, 02 Sep 2007 07:42:00 GMT

关于will_paginate插�g�Q�请看这个帖�? http://mmm.javaeye.com/blog/116931�?br />

�?陈刚 (www.chengang.com.cn)

但一直搜不到它支持ajax分面的方�?�Q�于是我参考它分页�Ҏ��的源代码(位于:vendor/plugins/will_paginate/lib/will_paginate/view_helpers.rb)�Q�稍微改写，变成了一个支持ajax的分��|��法。以下代码复制到application_helper里即可�?br />

  #-----------------------------------------
  # will_paginate插�g的ajax分页
  #-----------------------------------------
  @@pagination_options = { :class => 'pagination',
        :prev_label   => '上一��?/span>',
        :next_label   => '下一��?/span>',
        :inner_window => 4, # links around the current page
        :outer_window => 1, # links around beginning and end
        :separator    => ' ', # single space is friendly to spiders and non-graphic browsers
        :param_name   => :page,
        #add by chengang
        :update =>nil, #ajax所要更新的html元素的id
        :url_suffix => ''  #url的后�~��Q�主要是��Z��补全REST所需要的url
        #add end
        }
  mattr_reader :pagination_options

  def will_paginate_remote(entries = @entries, options = {})
    total_pages = entries.page_count

    if total_pages > 1
      options = options.symbolize_keys.reverse_merge(pagination_options)
      page, param = entries.current_page, options.delete(:param_name)

      inner_window, outer_window = options.delete(:inner_window).to_i, options.delete(:outer_window).to_i
      #add by chengang
      update =  options.delete(:update)
      suffix =  options.delete(:url_suffix)
      url = request.env['PATH_INFO']
      url += suffix if suffix
      #add end

      min = page - inner_window
      max = page + inner_window
      if max > total_pages then min -= max - total_pages
      elsif min < 1  then max += 1 - min
      end

      current   = min..max
      beginning = 1..(1 + outer_window)
      tail      = (total_pages - outer_window)..total_pages
      visible   = [beginning, current, tail].map(&:to_a).flatten.sort.uniq
      links, prev = [], 0

      visible.each do |n|
        next if n < 1
        break if n > total_pages

        unless n - prev > 1
          prev = n
          #change by chengang
          text = (n==page ? n : "[#{n}]")
          links << page_link_remote_or_span((n != page ? n : nil), 'current', text, param, update, url)
        else
          prev = n - 1
          links << ''
          redo
        end
      end

      #change by chengang
      links.unshift page_link_remote_or_span(entries.previous_page, 'disabled', options.delete(:prev_label), param, update, url)
      links.push    page_link_remote_or_span(entries.next_page,     'disabled', options.delete(:next_label), param, update, url)
      #change end

      content_tag :div, links.join(options.delete(:separator)), options
    end
  end

protected

  def page_link_remote_or_span(page, span_class, text, param, update, url)
    unless page
      content_tag :span, text, :class => span_class
    else
      link_to_remote text, :update => update, :url => "#{url}?#{param.to_sym}=#{page}", :method=>:get
    end
  end

在view中的使用如下所�C?

<%=will_paginate_remote @topics, :update => 'topicList', :url_suffix => url_suffix%>

陈刚 2007-09-02 15:42 发表评论

陈刚 — Sat, 25 Aug 2007 08:44:00 GMT

比如象BlogJava�q�里�~�辑器就应该是用的FCKeditor �Q�FCKeditor 相当有名�Q�它有PHP、JSP、rails�{�多个版本，核心都是一些javascript代码�?br />

�?陈刚 (www.chengang.com.cn)

环境�Q�ubuntu linux 7.0.4 + ruby 1.8.5 + Rails 1.2.3 + FCKeditor 0.4.1

直接从它的subversion库里取得该Rails插�g。先�q�入��C��的项目根目录�Q�再执行如下命��o

ruby script/plugin install svn://rubyforge.org/var/svn/fckeditorp/trunk/fckeditor

其他说明�Q?br />(1)你的linux必须先安装了subversion。（ubuntu里用新立得搜subversion卛_��Q?br />(2)把命令中的install 改�ؓ destory�Q�可以删除安装�?br />(3)我取到的�?007�q?月䆾最后更新的, v 0.4.1�?br />(4)FCKeditor安装在项目根目录下的vendor/plugins/fckeditor 里，
(5)vendor/plugins/fckeditor里的README很值得一读，我碰到Ajax问题�Q�查了所以网上的中文资料都没有提刎ͼ�在这个README却有�?br />

用如下语句在��面里含入它的javascript�?br />

<%= javascript_include_tag :fckeditor %>

�?br />

<%= javascript_include_tag "fckeditor/fckeditor" %>

在需要富文本的Form表单用如下语句生成一个富文�g�~�辑框：

<%= fckeditor_textarea("topic", "content", :toolbarSet => 'Simple', :width => '100%', :height => '200px') %>

说明�Q�topic对应模型对象,content对应它的字段。也��是要求当前��要有@topic�q�个实例变量�?br />

如果是用了ajax�Q�则需要在form_remote_tag加上一个before��?br />

  <%= form_remote_tag(:update => update,
                      :before => fckeditor_before_js('topic', 'content'),
                      :url => {:controller => 'topics', :action => 'create', :template => 'show'} )%>

�q�且富文件编辑框要加一个ajax=true的选项�Q?br />

<%= fckeditor_textarea(:topic, :content, :ajax => true, :toolbarKit => 'Simple', :width => '100%', :height => '600px') %>

在��上传囄��的功能时��到了错误。弹出出alert对话框，昄��Q�Error on file upload.Error number: 403

在日志里昄��如下�Q�表面上看好象是路由配置的问�?/p>

ActionController::RoutingError (no route found to match "/fckblank.html" with {:method=>:get}):
/var/lib/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/routing.rb:1292:in `recognize_path'
/var/lib/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/routing.rb:1282:in `recognize'
/var/lib/gems/1.8/gems/rails-1.2.3/lib/dispatcher.rb:40:in `dispatch'
/var/lib/gems/1.8/gems/rails-1.2.3/lib/webrick_server.rb:113:in `handle_dispatch'
/var/lib/gems/1.8/gems/rails-1.2.3/lib/webrick_server.rb:79:in `service'
/usr/lib/ruby/1.8/webrick/httpserver.rb:104:in `service'
/usr/lib/ruby/1.8/webrick/httpserver.rb:65:in `run'
/usr/lib/ruby/1.8/webrick/server.rb:173:in `start_thread'
/usr/lib/ruby/1.8/webrick/server.rb:162:in `start'
/usr/lib/ruby/1.8/webrick/server.rb:162:in `start_thread'

最后在http://blog.caronsoftware.com/articles/2006/12/03/fckeditor-0-4-0-released#comment-1745扑ֈ�了答案，�q�是一个BUG

解决�Ҏ�� Q?br />

修改�Q�vendor/plugins/fckeditor/app/controller/fckeditor_controller.rb
��原来的

unless "#{file.class}" == "Tempfile"

改�ؓ

unless "#{file.class}" == "Tempfile" || "#{file.class}" == "StringIO"

陈刚 2007-08-25 16:44 发表评论