added model Comment.

comments can now be added on news.

git-svn-id: http://redmine.rubyforge.org/svn/trunk@81 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/controllers/news_controller.rb

@@ -27,7 +27,23 @@ class NewsController < ApplicationController
       flash[:notice] = l(:notice_successful_update)
       redirect_to :action => 'show', :id => @news
     end
+  end
+  
+  def add_comment
+    @comment = Comment.new(params[:comment])
+    @comment.author = logged_in_user
+    if @news.comments << @comment
+      flash[:notice] = l(:label_comment_added)
+      redirect_to :action => 'show', :id => @news
+    else
+      render :action => 'show'
+    end
   end
+
+  def destroy_comment
+    @news.comments.find(params[:comment_id]).destroy
+    redirect_to :action => 'show', :id => @news
+  end
 
 	def destroy
 		@news.destroy

app/models/comment.rb

@@ -0,0 +1,6 @@
+class Comment < ActiveRecord::Base
+  belongs_to :commented, :polymorphic => true, :counter_cache => true
+  belongs_to :author, :class_name => 'User', :foreign_key => 'author_id'
+
+  validates_presence_of :commented, :author, :comment
+end

app/models/news.rb

@@ -18,6 +18,7 @@
 class News < ActiveRecord::Base
   belongs_to :project
   belongs_to :author, :class_name => 'User', :foreign_key => 'author_id'
+  has_many :comments, :as => :commented, :dependent => true, :order => "created_on"
   
   validates_presence_of :title, :description
   

app/views/news/show.rhtml

@@ -13,4 +13,26 @@
 <% end %>
 </div>
 
-<%= link_to_if_authorized l(:button_edit), :controller => 'news', :action => 'edit', :id => @news %>
+<p><%= link_to_if_authorized l(:button_edit), :controller => 'news', :action => 'edit', :id => @news %></p>
+
+<div id="comments" style="margin-bottom:16px;">
+<h3><%= l(:label_comment_plural) %></h3>
+<% @news.comments.each do |comment| %>
+<% next if comment.new_record? %>
+<h4><%= format_time(comment.created_on) %> - <%= comment.author.name %></h4>
+<div style="float:right;">
+    <small><%= link_to_if_authorized l(:button_delete), {:controller => 'news', :action => 'destroy_comment', :id => @news, :comment_id => comment}, :confirm => l(:text_are_you_sure), :post => true %></small>
+</div>
+<%= simple_format(auto_link(h comment.comment))%>
+<% end if @news.comments_count > 0 %>
+</div>
+
+<% if authorize_for 'news', 'add_comment' %>
+<h3><%= l(:label_comment_add) %></h3>
+<%= start_form_tag :action => 'add_comment', :id => @news %>
+<%= error_messages_for 'comment' %>
+<p><label for="comment_comment"><%= l(:field_comment) %></label><br />
+<%= text_area 'comment', 'comment', :cols => 60, :rows => 6 %></p>
+<%= submit_tag l(:button_add) %>
+<%= end_form_tag %>
+<% end %>

app/views/projects/list_news.rhtml

@@ -6,7 +6,8 @@
 <% for news in @news %>
 	<li><%= link_to news.title, :controller => 'news', :action => 'show', :id => news %><br />
 	<% unless news.summary.empty? %><%= news.summary %><br /><% end %>
-	<em><%= news.author.name %>, <%= format_time(news.created_on) %></em><br />&nbsp;
+	<em><%= news.author.name %>, <%= format_time(news.created_on) %></em><br />
+	<%= news.comments_count %> <%= lwr(:label_comment, news.comments_count).downcase %><br />&nbsp;
 	</li>
 <% end %>
 </ul>