revert refactoring that created a big performance regression

app/controllers/application_controller.rb

@@ -80,12 +80,22 @@ class ApplicationController < ActionController::Base
   # actions or multiple actions
   #
   def count_undone_todos_phrase(todos_parent, string="actions")
-    count = todos_parent.nil? ? 0 : todos_parent.todos.not_completed.count
-    # count_undone_todos(todos_parent)
+    count = count_undone_todos(todos_parent)
     word = count == 1 ? string.singularize : string.pluralize
     return count.to_s + "&nbsp;" + word
   end
   
+  def count_undone_todos(todos_parent)
+    if todos_parent.nil?
+      count = 0
+    elsif (todos_parent.is_a?(Project) && todos_parent.hidden?)
+      count = eval "@project_project_hidden_todo_counts[#{todos_parent.id}]"
+    else
+      count = eval "@#{todos_parent.class.to_s.downcase}_not_done_counts[#{todos_parent.id}]"
+    end
+    count || 0
+  end
+
   # Convert a date object to the format specified in the user's preferences in
   # config/settings.yml
   #
@@ -256,6 +266,23 @@ class ApplicationController < ActionController::Base
 
     @active_contexts = current_user.contexts.active
     @hidden_contexts = current_user.contexts.hidden
+    
+    init_not_done_counts
+    if prefs.show_hidden_projects_in_sidebar
+      init_project_hidden_todo_counts(['project'])
+    end
+  end
+  
+  def init_not_done_counts(parents = ['project','context'])
+    parents.each do |parent|
+      eval("@#{parent}_not_done_counts = @#{parent}_not_done_counts || current_user.todos.active.count(:group => :#{parent}_id)")
+    end
+  end
+  
+  def init_project_hidden_todo_counts(parents = ['project','context'])
+    parents.each do |parent|
+      eval("@#{parent}_project_hidden_todo_counts = @#{parent}_project_hidden_todo_counts || current_user.todos.count(:conditions => ['state = ? or state = ?', 'project_hidden', 'active'], :group => :#{parent}_id)")
+    end
   end
   
   # Set the contents of the flash message from a controller Usage: notify

app/controllers/contexts_controller.rb

@@ -263,7 +263,7 @@ class ContextsController < ApplicationController
   def init_todos
     set_context_from_params
     unless @context.nil?
-      @context.todos.send :with_scope, :find => { :include => [:project, :tags, :successors, :predecessors, :recurring_todo] } do
+      @context.todos.send :with_scope, :find => { :include => Todo::DEFAULT_INCLUDES } do
         @done = @context.done_todos
       end
 
@@ -275,7 +275,7 @@ class ContextsController < ApplicationController
       # projects from context.
       @not_done_todos = @context.todos.active(
         :order => "todos.due IS NULL, todos.due ASC, todos.created_at ASC", 
-        :include => [:project, :tags, :successors, :predecessors, :recurring_todo])
+        :include => Todo::DEFAULT_INCLUDES)
 
       @projects = current_user.projects
 

app/controllers/projects_controller.rb

@@ -45,11 +45,11 @@ class ProjectsController < ApplicationController
     init_data_for_sidebar unless mobile?
     @page_title = t('projects.page_title', :project => @project.name)
     
-    @not_done = @project.todos.active_or_hidden(:include => [:tags, :context, :predecessors])
-    @deferred = @project.todos.deferred(:include => [:tags, :context, :predecessors])
-    @pending = @project.todos.pending(:include => [:tags, :context, :predecessors])
+    @not_done = @project.todos.active_or_hidden(:include => Todo::DEFAULT_INCLUDES)
+    @deferred = @project.todos.deferred(:include => Todo::DEFAULT_INCLUDES)
+    @pending = @project.todos.pending(:include => Todo::DEFAULT_INCLUDES)
     @done = @project.todos.find_in_state(:all, :completed,
-      :order => "todos.completed_at DESC", :limit => current_user.prefs.show_number_completed, :include => [:context, :tags, :predecessors])
+      :order => "todos.completed_at DESC", :limit => current_user.prefs.show_number_completed, :include => Todo::DEFAULT_INCLUDES)
 
     @count = @not_done.size
     @down_count = @count + @deferred.size + @pending.size

app/models/todo.rb

@@ -44,7 +44,7 @@ class Todo < ActiveRecord::Base
   named_scope :completed_before, lambda { |date| {:conditions => ["todos.completed_at < ? ", date] } }  
 
   STARRED_TAG_NAME = "starred"
-  DEFAULT_INCLUDES = [ :project, :context, :tags, :taggings, :recurring_todo ]
+  DEFAULT_INCLUDES = [ :project, :context, :tags, :taggings, :pending_successors, :uncompleted_predecessors, :recurring_todo ]
 
   # regular expressions for dependencies
   RE_TODO = /[^']+/
@@ -185,13 +185,7 @@ class Todo < ActiveRecord::Base
   end
   
   def has_pending_successors
-    #  has_many :pending_successors, :through => :predecessor_dependencies,
-    #           :source => :successor, :conditions => ['todos.state = ?', 'pending']
-
-    successors = predecessor_dependencies.all(:include => [:successor])
-    pending = successors.reject { |d| !( d.successor.state=='pending') }
-    return !pending.empty?
-    #return !pending_successors.empty?
+    return !pending_successors.empty?
   end
   
   def has_tag?(tag)