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Description: El Dorado is a full-stack community web application written in Ruby/Rails.
Homepage: http://almosteffortless.com/eldorado/
Clone URL: git://github.com/trevorturk/el-dorado.git 
showing up to 500 messages in chat up automatically depending on last 
online_at
trevorturk (author)
Fri Jul 25 20:23:45 -0700 2008
commit  fd57a5ffda2323f48c1e93fa4f1493497af7a009
tree    3479c1bce3272930d89849f157790671dc9529c4
parent  3b5b04b1473a8db95883b73479ef1b31426951da
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app/controllers/messages_controller.rb 
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@@ -7,7 +7,7 @@ class MessagesController < ApplicationController
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   skip_filter :update_online_at, :get_layout_vars, :only => [:create, :more, :refresh, :refresh_chatters]
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   def index
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-    @messages = Message.get
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+    @messages = Message.get(session[:online_at])
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     current_user.update_attribute('chatting_at', Time.now.utc) if logged_in?
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     @chatters = User.chatting
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     unless @messages.empty?
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app/models/message.rb 
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@@ -4,8 +4,10 @@ class Message < ActiveRecord::Base
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   validates_presence_of :body
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-  def self.get
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-    find(:all, :limit => 50, :order => 'messages.id desc', :include => :user)
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+  def self.get(since = Time.now.utc)
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+    messages = all(:limit => 500, :conditions => ['created_at > ?', since], :order => 'messages.id desc', :include => :user)
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+    messages = all(:limit => 50, :order => 'messages.id desc', :include => :user) if messages.size < 50
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+    messages
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   end
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   def self.more(id)

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