Checkout of Instiki Trunk 1/21/2007.

vendor/rails/actionpack/lib/action_controller/macros/auto_complete.rb

@@ -0,0 +1,52 @@
+module ActionController
+  # Macros are class-level calls that add pre-defined actions to the controller based on the parameters passed in.
+  # Currently, they're used to bridge the JavaScript macros, like autocompletion and in-place editing, with the controller
+  # backing.
+  module Macros
+    module AutoComplete #:nodoc:
+      def self.append_features(base) #:nodoc:
+        super
+        base.extend(ClassMethods)
+      end
+
+      # Example:
+      #
+      #   # Controller
+      #   class BlogController < ApplicationController
+      #     auto_complete_for :post, :title
+      #   end
+      #
+      #   # View
+      #   <%= text_field_with_auto_complete :post, title %>
+      #
+      # By default, auto_complete_for limits the results to 10 entries,
+      # and sorts by the given field.
+      # 
+      # auto_complete_for takes a third parameter, an options hash to
+      # the find method used to search for the records:
+      #
+      #   auto_complete_for :post, :title, :limit => 15, :order => 'created_at DESC'
+      #
+      # For help on defining text input fields with autocompletion, 
+      # see ActionView::Helpers::JavaScriptHelper.
+      #
+      # For more examples, see script.aculo.us:
+      # * http://script.aculo.us/demos/ajax/autocompleter
+      # * http://script.aculo.us/demos/ajax/autocompleter_customized
+      module ClassMethods
+        def auto_complete_for(object, method, options = {})
+          define_method("auto_complete_for_#{object}_#{method}") do
+            find_options = { 
+              :conditions => [ "LOWER(#{method}) LIKE ?", '%' + params[object][method].downcase + '%' ], 
+              :order => "#{method} ASC",
+              :limit => 10 }.merge!(options)
+            
+            @items = object.to_s.camelize.constantize.find(:all, find_options)
+
+            render :inline => "<%= auto_complete_result @items, '#{method}' %>"
+          end
+        end
+      end
+    end
+  end
+end

vendor/rails/actionpack/lib/action_controller/macros/in_place_editing.rb

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+module ActionController
+  module Macros
+    module InPlaceEditing #:nodoc:
+      def self.append_features(base) #:nodoc:
+        super
+        base.extend(ClassMethods)
+      end
+
+      # Example:
+      #
+      #   # Controller
+      #   class BlogController < ApplicationController
+      #     in_place_edit_for :post, :title
+      #   end
+      #
+      #   # View
+      #   <%= in_place_editor_field :post, 'title' %>
+      #
+      # For help on defining an in place editor in the browser,
+      # see ActionView::Helpers::JavaScriptHelper.
+      module ClassMethods
+        def in_place_edit_for(object, attribute, options = {})
+          define_method("set_#{object}_#{attribute}") do
+            @item = object.to_s.camelize.constantize.find(params[:id])
+            @item.update_attribute(attribute, params[:value])
+            render :text => @item.send(attribute)
+          end
+        end
+      end
+    end
+  end
+end