修复了关注后不刷新页面中粉丝数的功能。

app/controllers/watchers_controller.rb

@@ -100,6 +100,7 @@ class WatchersController < ApplicationController
   def set_watcher(watchables, user, watching)
     watchables.each do |watchable|
       watchable.set_watcher(user, watching)
+      @user = watchable     # added by william
     end
     respond_to do |format|
       format.html { redirect_to_referer_or {render :text => (watching ? 'Watcher added.' : 'Watcher removed.'), :layout => true}}

app/helpers/application_helper.rb

@@ -1316,4 +1316,9 @@ module ApplicationHelper
   end  
 # end
 
+#added by william
+  def get_fans_num(user)
+    user.watcher_users.count
+  end
+#end
 end

app/views/layouts/base_users.html.erb

@@ -51,7 +51,7 @@
 										
 										<div>
 											<%= l(:label_user_watcher) %> (<strong class="font_small_watch"><%= User.watched_by(@user.id).count %></strong>) &nbsp;
-											<%= l(:label_user_fans) %>(<strong class="font_small_watch"><span id="fans_num"><%=  @user.watcher_users.count %></span></strong>) 
+											<%= render :partial => "watchers/fans_num",:locals => {:fans_num => get_fans_num(@user) }%>
 										</div>									
 									</div>
 									<div class="user_underline"></div>

app/views/watchers/_fans_num.html.erb

@@ -0,0 +1,3 @@
+<span id="fans_num">
+<%= l(:label_user_fans) %>(<strong class="font_small_watch"><%= fans_num %></strong>)
+</span> 

app/views/watchers/_set_watcher.js.erb

@@ -1,2 +1,5 @@
 <% selector = ".#{watcher_css(watched)}" %>
 $("<%= selector %>").each(function(){$(this).replaceWith("<%= escape_javascript watcher_link(watched, user) %>")});
+
+$('#fans_num').html('<%= j(render :partial => "/watchers/fans_num",:locals => {:fans_num => get_fans_num(@user) }
+) %>');