socialforge/app/views/news/_course_show.html.erb

<script type="text/javascript">
    function regexTitle()
    {
        var name = $("#news_title").val();
        if(name.length ==0)
        {
            $("#title_notice_span").text("标题不能为空");
            $("#title_notice_span").css('color','#ff0000');
            $("#title_notice_span").focus();
            return false;
        }
        else if(name.length <= 60)
        {
            $("#title_notice_span").text("填写正确");
            $("#title_notice_span").css('color','#008000');
            return true;
        }
        else
        {
            $("#title_notice_span").text("标题超过60个字符");
            $("#title_notice_span").css('color','#ff0000');
            $("#title_notice_span").focus();
            return false;
        }
    }

    function regexDescription()
    {
        var name = $("#news_description").val();
        if(name.length ==0)
        {
            $("#description_notice_span").text("描述不能为空");
            $("#description_notice_span").css('color','#ff0000');
            $("#description_notice_span").focus();
            return false;
        }
        else
        {
            $("#description_notice_span").text("填写正确");
            $("#description_notice_span").css('color','#008000');
            return true;
        }
    }

    function submitNews()
    {
        if(regexTitle() && regexDescription())
        {
            $("#news-form").submit();
        }
    }
</script>

<div class="contextual">
  <%= watcher_link(@news, User.current) %>
  <%= link_to(l(:button_edit),
              edit_news_path(@news),
              :class => 'icon icon-edit',
              :accesskey => accesskey(:edit),
              :onclick => '$("#edit-news").show(); return false;') if User.current.allowed_to?(:manage_news, @course) %>
  <%= delete_link news_path(@news) if User.current.allowed_to?(:manage_news, @course) %>
</div>

<h3><strong><%=h @news.title %></strong></h3>

<% if authorize_for_course('news', 'edit') %>
    <div id="edit-news" style="display:none;">
      <%= labelled_form_for :news, @news, :url => news_path(@news),
                            :html => { :id => 'news-form', :multipart => true, :method => :put } do |f| %>
          <%= render :partial => 'course_form', :locals => { :f => f, :is_new => false } %>
          <%#= submit_tag l(:button_save) %>
          <%= link_to l(:button_save), "#", :onclick => 'submitNews();' %>
          <%= preview_link preview_news_path(:course_id => @course, :id => @news), 'news-form',target='preview',{:class => ''} %> |
          <%= link_to l(:button_cancel), "#", :onclick => '$("#edit-news").hide(); return false;' %>
      <% end %>
      <div id="preview" class="wiki"></div>
    </div>
<% end %>

<div id="comments" style="margin-bottom:16px;">

  <div style="margin:15px">
    <span class="font_description"> <%= textilizable(@news, :description) %> </span>
    <br/>
    <%= link_to_attachments @news %>
    <br/>
    <!--add comment-->
    <% if @news.commentable? %>
        <p>
          <%= toggle_link l(:label_comment_add), "add_comment_form", :focus => "comment_comments" %>
        </p>
        <%= form_tag({:controller => 'comments', :action => 'create', :id => @news}, :id => "add_comment_form", :style => "display:none;") do %>
            <div class="box">
              <%= text_area 'comment', 'comments', :cols => 80, :rows => 15, :class => 'wiki-edit' %>
              <%= wikitoolbar_for 'comment_comments' %>
            </div>
            <p>
              <%= submit_tag l(:button_add) %>
            </p>
        <% end %>
    <% end %>

    <% html_title @news.title -%>

    <% content_for :header_tags do %>
        <%= stylesheet_link_tag 'scm' %>
    <% end %>

    <!--dispaly comments-->
    <div  class="line_heng"></div>
  </div>
  <h3 class="comments"><%= l(:label_comment_plural) %></h3>
  <% comments = @comments.reverse %>
  <% comments.each do |comment| %>
      <% next if comment.new_record? %>
      <table width="660px" border="0" align="center">
        <tr>
          <td colspan="2" valign="top" width="50" ><%= image_tag(url_to_avatar(comment.author), :class => "avatar")%></td>
          <td>
            <table width="580px" border="0">
              <tr>
                <td colspan="2" valign="top"><strong><%= link_to_user(comment.author) if comment.respond_to?(:author) %> </strong><span class="font_lighter"><%= l(:label_project_newadd) %></span><%= l(:label_comment_plural) %></td>
              </tr>
              <tr>
                <td colspan="2" width="580px" >
                  <p class="font_description">
                    <%= textilizable(comment.comments) %>
                  </p></td>
              </tr>
              <tr>
                <td align="left"><span class="font_lighter"> <%= format_time(comment.created_on) %></span></td>
                <td width="200" align="right" class="a"><%= link_to_if_authorized_course image_tag('delete.png'), {:controller => 'comments', :action => 'destroy', :id => @news, :comment_id => comment},
                                                                                  :data => {:confirm => l(:text_are_you_sure)}, :method => :delete, :title => l(:button_delete) %></td>
              </tr>
            </table></td>
        </tr>
      </table>
  <% end if @comments.any? %>
</div>