welcome activity.

app/helpers/welcome_helper.rb

@@ -85,9 +85,18 @@ module WelcomeHelper
 		return sort_bid_by_hot_rails 2
 	end
 	#取得所有活动
- def find_all_activities
+	def find_all_activities limit=10
+		users = []
+		activities = Activity.find_by_sql("select distinct user_id from activities order by id DESC limit #{limit}" )
+		activities.each { |activity|
+			users << activity.user_id
+		}
+		user_objs = User.find_by_sql("SELECT * FROM users WHERE (users.id IN #{"(" << users.join(',') << ")"} )")
+		activity = Redmine::Activity::Fetcher.new(user_objs)
 
+		activity.events_welcome(nil, nil, {:limit => limit})
 	end
+
 	#取得论坛数据
 	def find_hot_forum_topics
 

lib/plugins/acts_as_activity_provider/lib/acts_as_activity_provider.rb

@@ -81,6 +81,40 @@ module Redmine
 
             scope.all(provider_options[:find_options].dup)
           end
+
+          def find_events1(event_type, user, from, to, options)
+            provider_options = activity_provider_options[event_type]
+            raise "#{self.name} can not provide #{event_type} events." if provider_options.nil?
+
+            scope = self
+
+            if from && to
+              scope = scope.scoped(:conditions => ["#{provider_options[:timestamp]} BETWEEN ? AND ?", from, to])
+            end
+
+            if options[:author]
+              return [] if provider_options[:author_key].nil?
+              scope = scope.scoped(:conditions => ["#{provider_options[:author_key]} = ?", options[:author].id])
+            end
+
+            if options[:limit]
+              # id and creation time should be in same order in most cases
+              scope = scope.scoped(:order => "#{table_name}.id DESC", :limit => options[:limit])
+            end
+
+            if provider_options.has_key?(:permission)
+              user1 = User.find_by_login('user')
+              scope = scope.scoped(:conditions => Project.allowed_to_condition(user1, provider_options[:permission] || :view_project, options))
+            elsif respond_to?(:visible)
+              scope = scope.visible(user1, options)
+            else
+              ActiveSupport::Deprecation.warn "acts_as_activity_provider with implicit :permission option is deprecated. Add a visible scope to the #{self.name} model or use explicit :permission option."
+              scope = scope.scoped(:conditions => Project.allowed_to_condition(user1, "view_#{self.name.underscore.pluralize}".to_sym, options))
+            end
+
+            scope.all(provider_options[:find_options].dup)
+          end
+          
         end
       end
     end

lib/redmine/activity/fetcher.rb

@@ -85,6 +85,24 @@ module Redmine
         e
       end
 
+      def events_welcome(from = nil, to = nil, options={})
+        e = []
+        @options[:limit] = options[:limit]
+
+        @scope.each do |event_type|
+          constantized_providers(event_type).each do |provider|
+            e += provider.find_events1(event_type, @user, from, to, @options)
+          end
+        end
+
+        e.sort! {|a,b| b.event_datetime <=> a.event_datetime}
+
+        if options[:limit]
+          e = e.slice(0, options[:limit])
+        end
+        e
+      end
+
       private
 
       def constantized_providers(event_type)