0
@@ -1,8 +1,13 @@
0
 class RecommendableGenerator < Rails::Generator::NamedBase 
0
   def manifest 
0
     record do |m| 
0
-      m.migration_template 'migration.rb', 'db/migrate'
0
-      m.dependency 'model', class_name, :collision => :skip, :skip_migration => true
0
+      m.migration_template 'migration.rb', 'db/migrate', :assigns => {
0
+          :recommendable => table_name,
0
+          :table_name => "similar_#{table_name}",
0
+          :migration_name => "CreateSimilar#{class_name.pluralize.gsub(/::/, '')}"
0
+        }, :migration_file_name => "create_similar_#{file_path.gsub(/\//, '_').pluralize}"
0
+      model_args = ["Similar#{class_name}", "#{table_name}_one:integer","#{table_name}_two:integer", "score:decimal"]
0
+      m.dependency 'model', model_args, :collision => :skip, :skip_migration => true
0
     end 
0
   end
0
 end

0
@@ -1,20 +1,19 @@
0
-class CreateRecommendations < ActiveRecord::Migration
0
+class <%= migration_name %> < ActiveRecord::Migration
0
   def self.up
0
-    create_table :recommendations do |t|
0
-      t.integer :recommended_id
0
-      t.string :recommeded_type
0
-      t.integer :recommender_id
0
+    create_table :<%= table_name %> do |t|
0
+      t.integer :<%= recommendable.singularize %>_one
0
+      t.integer :<%= recommendable.singularize %>_two
0
       t.decimal :score
0
     end
0
     
0
-    add_index :recommendations, :recommended_id
0
-    add_index :recommendations, :recommender_id
0
-    add_index :recommendations, :score
0
-    add_index :recommendations, [:recommended_id, :recommeded_type]
0
+    add_index :<%= table_name %>, :<%= recommendable.singularize %>_one
0
+    add_index :<%= table_name %>, :<%= recommendable.singularize %>_two
0
+    add_index :<%= table_name %>, :score
0
+    add_index :<%= table_name %>, [:<%= recommendable.singularize %>_one, :<%= recommendable.singularize %>_two]
0
   end
0
   
0
   def self.down
0
-    drop_table :recommendations
0
+    drop_table :<%= table_name %>
0
   end
0
 end

0
@@ -1,9 +1 @@
0
-class Recommendation < ActiveRecord::Base
0
-  
0
-  belongs_to :recommender, :class_name => "#{class_name}", :foreign_key => :recommender_id
0
-  belongs_to :recommended, :polymorphic => true
0
-  
0
-  validates_presence_of :recommender_id, :recommended_type, :recommended_id
0
-  
0
-end

0
@@ -1,10 +1 @@
0
-namespace :recommendables do
0
-  desc "Update all similar_items tables."
0
-  task :update => :environment do
0
-    
0
-    @all_tables = ActiveRecord::Schema.tables
0
-    @similar_tables = @all_tables.select { |table| table =~ /^similar_/ }
0
-    
0
-  end
0
-end

0
@@ -8,11 +8,7 @@
0
     
0
     module ClassMethods
0
       def recommendable
0
-        has_many_polymorphs :recommended, 
0
-          :from => [:"#{self.class_name}s"], 
0
-          :through => :"similar_#{self.class_name}s",
0
-          :dependent => :destroy,
0
-          :as => :recommender
0
+        # ... 
0
       end
0
     end
0
   end

0
@@ -1,6 +1 @@
0
-mkdir -p ~/.rails/generators
0
-cd generators
0
-ln -sf recommendable ~/.rails/generators
0
-
0
-goals: http://www.markmcgranaghan.com/posts/51