Remove acts_as_list. Users are advised to install the new plugin. References #9415. [josh, nzkoz]

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@7444 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

1 files changed, 0 insertions, 253 deletions

diff --git a/activerecord/lib/active_record/acts/list.rb b/activerecord/lib/active_record/acts/list.rb
deleted file mode 100644
index 22ac28b624..0000000000
--- a/activerecord/lib/active_record/acts/list.rb
+++ /dev/null
@@ -1,253 +0,0 @@
-module ActiveRecord
-  module Acts #:nodoc:
-    module List #:nodoc:
-      def self.included(base)
-        base.extend(ClassMethods)
-      end
-      
-      # This +acts_as+ extension provides the capabilities for sorting and reordering a number of objects in a list.
-      # The class that has this specified needs to have a +position+ column defined as an integer on
-      # the mapped database table.
-      #
-      # Todo list example:
-      #
-      #   class TodoList < ActiveRecord::Base
-      #     has_many :todo_items, :order => "position"
-      #   end
-      #
-      #   class TodoItem < ActiveRecord::Base
-      #     belongs_to :todo_list
-      #     acts_as_list :scope => :todo_list
-      #   end
-      #
-      #   todo_list.first.move_to_bottom
-      #   todo_list.last.move_higher
-      module ClassMethods
-        # Configuration options are:
-        #
-        # * +column+ - specifies the column name to use for keeping the position integer (default: +position+)
-        # * +scope+ - restricts what is to be considered a list. Given a symbol, it'll attach <tt>_id</tt> 
-        #   (if it hasn't already been added) and use that as the foreign key restriction. It's also possible 
-        #   to give it an entire string that is interpolated if you need a tighter scope than just a foreign key.
-        #   Example: <tt>acts_as_list :scope => 'todo_list_id = #{todo_list_id} AND completed = 0'</tt>
-        def acts_as_list(options = {})
-          configuration = { :column => "position", :scope => "1 = 1" }
-          configuration.update(options) if options.is_a?(Hash)
-
-          configuration[:scope] = "#{configuration[:scope]}_id".intern if configuration[:scope].is_a?(Symbol) && configuration[:scope].to_s !~ /_id$/
-          
-          if configuration[:scope].is_a?(Symbol)
-            scope_condition_method = %(
-              def scope_condition
-                if #{configuration[:scope].to_s}.nil?
-                  "#{configuration[:scope].to_s} IS NULL"
-                else
-                  "#{configuration[:scope].to_s} = \#{#{configuration[:scope].to_s}}"
-                end
-              end
-            )
-          else
-            scope_condition_method = "def scope_condition() \"#{configuration[:scope]}\" end"
-          end
-          
-          class_eval <<-EOV
-            include ActiveRecord::Acts::List::InstanceMethods
-
-            def acts_as_list_class
-              ::#{self.name}
-            end
-            
-            def position_column
-              '#{configuration[:column]}'
-            end
-            
-            #{scope_condition_method}
-            
-            after_destroy  :remove_from_list
-            before_create  :add_to_list_bottom
-          EOV
-        end
-      end
-        
-      # All the methods available to a record that has had <tt>acts_as_list</tt> specified. Each method works
-      # by assuming the object to be the item in the list, so <tt>chapter.move_lower</tt> would move that chapter
-      # lower in the list of all chapters. Likewise, <tt>chapter.first?</tt> would return +true+ if that chapter is
-      # the first in the list of all chapters.
-      module InstanceMethods
-        # Insert the item at the given position (defaults to the top position of 1).
-        def insert_at(position = 1)
-          insert_at_position(position)
-        end
-        
-        # Swap positions with the next lower item, if one exists.
-        def move_lower
-          return unless lower_item
-
-          acts_as_list_class.transaction do
-            lower_item.decrement_position
-            increment_position
-          end
-        end
-        
-        # Swap positions with the next higher item, if one exists.
-        def move_higher
-          return unless higher_item
-
-          acts_as_list_class.transaction do
-            higher_item.increment_position
-            decrement_position
-          end
-        end
-        
-        # Move to the bottom of the list. If the item is already in the list, the items below it have their
-        # position adjusted accordingly.
-        def move_to_bottom
-          return unless in_list?
-          acts_as_list_class.transaction do
-            decrement_positions_on_lower_items
-            assume_bottom_position
-          end
-        end
-        
-        # Move to the top of the list. If the item is already in the list, the items above it have their
-        # position adjusted accordingly.
-        def move_to_top
-          return unless in_list?
-          acts_as_list_class.transaction do
-            increment_positions_on_higher_items
-            assume_top_position
-          end
-        end
-        
-        # Removes the item from the list.
-        def remove_from_list
-          decrement_positions_on_lower_items if in_list?
-        end
-
-        # Increase the position of this item without adjusting the rest of the list.
-        def increment_position
-          return unless in_list?
-          update_attribute position_column, self.send(position_column).to_i + 1
-        end
-  
-        # Decrease the position of this item without adjusting the rest of the list.
-        def decrement_position
-          return unless in_list?
-          update_attribute position_column, self.send(position_column).to_i - 1
-        end
-  
-        # Return +true+ if this object is the first in the list.
-        def first?
-          return false unless in_list?
-          self.send(position_column) == 1
-        end
-        
-        # Return +true+ if this object is the last in the list.
-        def last?
-          return false unless in_list?
-          self.send(position_column) == bottom_position_in_list
-        end
-        
-        # Return the next higher item in the list.
-        def higher_item
-          return nil unless in_list?
-          acts_as_list_class.find(:first, :conditions =>
-            "#{scope_condition} AND #{position_column} = #{(send(position_column).to_i - 1).to_s}"
-          )
-        end
-
-        # Return the next lower item in the list.
-        def lower_item
-          return nil unless in_list?
-          acts_as_list_class.find(:first, :conditions =>
-            "#{scope_condition} AND #{position_column} = #{(send(position_column).to_i + 1).to_s}"
-          )
-        end
-
-        # Test if this record is in a list
-        def in_list?
-          !send(position_column).nil?
-        end
-
-        private
-          def add_to_list_top
-            increment_positions_on_all_items
-          end
-
-          def add_to_list_bottom
-            self[position_column] = bottom_position_in_list.to_i + 1
-          end
-
-          # Overwrite this method to define the scope of the list changes
-          def scope_condition() "1" end
-
-          # Returns the bottom position number in the list.
-          #   bottom_position_in_list    # => 2
-          def bottom_position_in_list(except = nil)
-            item = bottom_item(except)
-            item ? item.send(position_column) : 0
-          end
-
-          # Returns the bottom item
-          def bottom_item(except = nil)
-            conditions = scope_condition
-            conditions = "#{conditions} AND #{self.class.primary_key} != #{except.id}" if except
-            acts_as_list_class.find(:first, :conditions => conditions, :order => "#{position_column} DESC")
-          end
-
-          # Forces item to assume the bottom position in the list.
-          def assume_bottom_position
-            update_attribute(position_column, bottom_position_in_list(self).to_i + 1)
-          end
-  
-          # Forces item to assume the top position in the list.
-          def assume_top_position
-            update_attribute(position_column, 1)
-          end
-
-          # This has the effect of moving all the higher items up one.
-          def decrement_positions_on_higher_items(position)
-            acts_as_list_class.update_all(
-              "#{position_column} = (#{position_column} - 1)", "#{scope_condition} AND #{position_column} <= #{position}"
-            )
-          end
-
-          # This has the effect of moving all the lower items up one.
-          def decrement_positions_on_lower_items
-            return unless in_list?
-            acts_as_list_class.update_all(
-              "#{position_column} = (#{position_column} - 1)", "#{scope_condition} AND #{position_column} > #{send(position_column).to_i}"
-            )
-          end
-
-          # This has the effect of moving all the higher items down one.
-          def increment_positions_on_higher_items
-            return unless in_list?
-            acts_as_list_class.update_all(
-              "#{position_column} = (#{position_column} + 1)", "#{scope_condition} AND #{position_column} < #{send(position_column).to_i}"
-            )
-          end
-
-          # This has the effect of moving all the lower items down one.
-          def increment_positions_on_lower_items(position)
-            acts_as_list_class.update_all(
-              "#{position_column} = (#{position_column} + 1)", "#{scope_condition} AND #{position_column} >= #{position}"
-           )
-          end
-
-          # Increments position (<tt>position_column</tt>) of all items in the list.
-          def increment_positions_on_all_items
-            acts_as_list_class.update_all(
-              "#{position_column} = (#{position_column} + 1)",  "#{scope_condition}"
-            )
-          end
-
-          def insert_at_position(position)
-            remove_from_list
-            increment_positions_on_lower_items(position)
-            self.update_attribute(position_column, position)
-          end
-      end     
-    end
-  end
-end