activerecord associations do not act like a collection anymore, so convert to array first

before using map, collect, etc.

app/helpers/todos_helper.rb

@@ -238,7 +238,7 @@ module TodosHelper
 
   def remote_toggle_checkbox(todo=@todo)
     check_box_tag("mark_complete_#{todo.id}", toggle_check_todo_path(todo), todo.completed?, :class => 'item-checkbox',
-      :title => todo.pending? ? t('todos.blocked_by', :predecessors => todo.uncompleted_predecessors.map(&:description).join(', ')) : "", :readonly => todo.pending?)
+      :title => todo.pending? ? t('todos.blocked_by', :predecessors => todo.uncompleted_predecessors.to_a.map(&:description).join(', ')) : "", :readonly => todo.pending?)
   end
 
   def remote_mobile_checkbox(todo=@todo)
@@ -251,7 +251,7 @@ module TodosHelper
     if todo.completed?
       content_tag(:span, {:class => :grey}) { format_date( todo.completed_at ) }
     elsif todo.pending?
-      title = t('todos.depends_on')+ ": " + todo.uncompleted_predecessors.map(&:description).join(', ')
+      title = t('todos.depends_on')+ ": " + todo.uncompleted_predecessors.to_a.map(&:description).join(', ')
       content_tag(:a, {:title => title}) { content_tag(:span, {:class => :orange}) { t('todos.pending') } }
     elsif todo.deferred?
       show_date( todo.show_from )
@@ -263,7 +263,7 @@ module TodosHelper
   def successors_span(todo=@todo)
     unless todo.pending_successors.empty?
       pending_count = todo.pending_successors.count
-      title = "#{t('todos.has_x_pending', :count => pending_count)}: #{todo.pending_successors.map(&:description).join(', ')}"
+      title = "#{t('todos.has_x_pending', :count => pending_count)}: #{todo.pending_successors.to_a.map(&:description).join(', ')}"
       image_tag( 'successor_off.png', :width=>'10', :height=>'16', :border=>'0', :title => title )
     end
   end
@@ -277,7 +277,7 @@ module TodosHelper
   end
 
   def tag_list_text(todo=@todo)
-    todo.tags.join(', ')
+    todo.tags.to_a.join(', ')
   end
 
   def tag_span (tag, mobile=false)

app/views/todos/toggle_check.js.erb

@@ -159,7 +159,7 @@ function block_predecessors(next_steps) {
 function regenerate_predecessor_family(next_steps) {
 <%
 if @predecessors
-  parents = @predecessors
+  parents = @predecessors.to_a
   until parents.empty?
     parent = parents.pop
     parents += parent.predecessors -%>

app/views/todos/update.js.erb

@@ -125,7 +125,7 @@ function update_predecessors(next_steps) {
 
 function regenerate_predecessor_family() {
 <%
-  parents = @todo.predecessors
+  parents = @todo.predecessors.to_a
   until parents.empty?
     parent = parents.pop
     parents += parent.predecessors 

lib/is_taggable.rb

@@ -9,10 +9,10 @@ module IsTaggable
       has_many :taggings, :as => :taggable
       has_many :tags, :through => :taggings do
         def to_s
-          self.map(&:name).sort.join(Tag::JOIN_DELIMITER)
+          self.to_a.map(&:name).sort.join(Tag::JOIN_DELIMITER)
         end
         def all_except_starred
-          self.reject{|tag| tag.name == Todo::STARRED_TAG_NAME}
+          self.to_a.reject{|tag| tag.name == Todo::STARRED_TAG_NAME}
         end
       end
       
@@ -31,7 +31,7 @@ module IsTaggable
   
         # Transactions may not be ideal for you here; be aware.
         Tag.transaction do
-          current = tags.map(&:name)
+          current = tags.to_a.map(&:name)
           _add_tags(list - current)
           _remove_tags(current - list)
         end