user can't delete self and flash_messages

app/controllers/panel/users_controller.rb

@@ -22,6 +22,7 @@ class Panel::UsersController < ApplicationController
   def create
     @user = User.new(params[:user])
     if @user.save
+      flash[:notice] = t('panel.create_success_user')
       redirect_to :action => :index
     else
       render :action => :new      
@@ -43,6 +44,7 @@ class Panel::UsersController < ApplicationController
     @user.avatar = params[:file] if params[:file]
     
     if @user.update_attributes(params[:user])
+      flash[:notice] = t('panel.update_success_user')
       redirect_to :action => :index
     else
       @user_info_models = UserInfoModel.all.entries
@@ -52,8 +54,12 @@ class Panel::UsersController < ApplicationController
   end
   
   def destroy
-    @user = User.find(params[:id])
-    @user.destroy
+    if params[:id].eql?(session['warden.user.user.key'][1].to_s)
+      flash[:error] = t('panel.cant_delete_self')
+    else
+      @user = User.find(params[:id]) 
+      @user.destroy
+    end
     
     redirect_to :action => :index
   end

app/helpers/application_helper.rb

@@ -1,11 +1,31 @@
 module ApplicationHelper
 
+  FLASH_NOTICE_KEYS = [:error, :notice, :warning]
+  
   def colorize_in_use_locale(locale)
     @site_in_use_locales.include?(locale)? 'green' : 'red'
   end
   
+  def flash_messages
+    return unless messages = flash.keys.select{|k| FLASH_NOTICE_KEYS.include?(k)}
+    formatted_messages = messages.map do |type|      
+      content_tag :div, :class => type.to_s do
+        message_for_item(flash[type], flash["#{type}_item".to_sym])
+      end
+    end
+    raw(formatted_messages.join)
+  end
+  
   def link_back
      link_to t('back'), session[:last_page]
   end
 
+  def message_for_item(message, item = nil)
+    if item.is_a?(Array)
+      message % link_to(*item)
+    else
+      message % item
+    end
+  end
+
 end

app/views/admin/items/index.html.erb

@@ -12,6 +12,8 @@
   </ul>
 <% end -%>
 
+<%= flash_messages %>
+
 <h1><%= t('admin.list_items') %>: <%= show_parent_items_link unless @parent_item.nil? %></h1>
 
 <% if !Layout.exist_one? %>

app/views/admin/layouts/index.html.erb

@@ -4,6 +4,8 @@
   </ul>
 <% end -%>
 
+<%= flash_messages %>
+
 <h1><%= t('admin.list_layouts') %></h1>
 
 <table>

app/views/panel/users/_form.html.erb

@@ -32,7 +32,7 @@
   </fieldset>
 <% end %>
 
-<%= hidden_field_tag :active_roles, @user.active_roles.size > 0 %>
+<%= hidden_field_tag :active_roles, (@user.active_roles.size > 0 rescue nil ) %>
 <% if @user_role_models %>
   <fieldset id="roles" <%= raw(' style="display: none;"') unless (@user.active_roles.size > 0 rescue nil) %>>
   <legend><%= t('panel.roles') %></legend>

app/views/panel/users/index.html.erb

@@ -1,9 +1,11 @@
 <% content_for :secondary do %>
-    <ul class="list">
-        <li><%= link_to t('panel.new_user'), new_panel_user_path, :class => 'button positive' %></li>
-    </ul>
+  <ul class="list">
+    <li><%= link_to t('panel.new_user'), new_panel_user_path, :class => 'button positive' %></li>
+  </ul>
 <% end -%>
 
+<%= flash_messages %>
+
 <h1><%= t('panel.list_users') %></h1>
 
 <table>
@@ -14,15 +16,16 @@
     <th><%= t('panel.action') %></th>
   </tr>
 
-<% @users.each do |user| %>
-<tr>
-    <td><%= user.get_roles %></td>
-    <td><%= user[:name] %></td>
-    <td><%= user.email %></td>
-    <td>
+  <% @users.each do |user| %>
+    <tr>
+      <td><%= user.get_roles %></td>
+      <td><%= user[:name] %></td>
+      <td><%= user.email %></td>
+      <td>
         <%= link_to t(:show), panel_user_path(user) %> |
         <%= link_to t(:edit), edit_panel_user_path(user) %> | 
-        <%= link_to t(:delete), panel_user_path(user), :method => :delete %></td>
-</tr>    
-<% end %>
+        <%= link_to t(:delete), panel_user_path(user), :confirm => t('sure?'), :method => :delete %>
+      </td>
+    </tr>    
+  <% end %>
 </table>

config/locales/en.yml

@@ -97,6 +97,8 @@ en:
     
   panel:
     action: Action
+    cant_delete_self: You can not delete yourself.
+    create_success_user: User was successfully created.
     email: Email
     home: Home
     list_users: Users list
@@ -105,5 +107,6 @@ en:
     new_user: New user
     infos: Information
     roles: Roles
+    update_success_user: User was successfully updated.
     user: User
     user_panel: User panel

config/locales/zh_tw.yml

@@ -94,6 +94,8 @@ zh_tw:
     
   panel:
     action: 行動
+    cant_delete_self: 您不可以刪除自己。
+    create_success_user: 用戶已成功創建。
     email: Email
     home: 首頁
     list_users: 使用清單
@@ -102,6 +104,7 @@ zh_tw:
     new_user: 新增使用
     infos: 資料
     roles: 角色
+    update_success_user: 用戶已成功更新。
     user: 用戶
     user_panel: 用戶面板
     

public/stylesheets/main.css

@@ -10,3 +10,15 @@ ul.list li{
 	list-style:none;
 	border-bottom:1px solid #ccc;
 	}
+	
+.error{
+  color:red;
+  }
+	
+.notice, .message{
+  color:green;
+  }
+  
+.warning{
+  color:orange;
+  }