From 52cdcb876c5f719c543e8d6efdcdc9dde759218a Mon Sep 17 00:00:00 2001
From: hukl <hukl@eight.local>
Date: Mon, 2 Feb 2009 22:29:35 +0100
Subject: comments on top of the class to keep the class itself clean

---
 app/models/page.rb | 42 +++++++++++++++++++++++-------------------
 1 file changed, 23 insertions(+), 19 deletions(-)

diff --git a/app/models/page.rb b/app/models/page.rb
index fee20a8..e1bddb2 100644
--- a/app/models/page.rb
+++ b/app/models/page.rb
@@ -1,28 +1,32 @@
+# Alternativ queries for the named_scope with one or two inner joins. 
+# Loading the Flags themselves would be another query. 
+# Could be faster on larger data sets.
+#
+# Single Join:
+#
+# Page.find(
+#   :all, 
+#   :joins => 'JOIN flags_pages on pages.id = flags_pages.page_id', 
+#   :include => :flags, 
+#   :conditions => ['flags_pages.flag_id IN (?)', [1,2]]
+# )
+# Two inner joins:
+#
+# Page.find(
+#   :all, 
+#   :joins => :flags_pages, 
+#   :conditions => ['flags_pages.flag_id IN (?)', [1,2]]
+# )
+#
+# Page.find_by_sql("select p.* from pages p JOIN flags_pages f on p.id = f.page_id where (f.flag_id IN (1,2))")
+
 class Page < ActiveRecord::Base
   
   belongs_to :node
   has_and_belongs_to_many :flags
   
   acts_as_list :column => :revision, :scope => :node_id
-  
-  # Alternativ Queries with one or two inner joins. Loading the Flags themselves
-  # would be another query. Could be faster on larger data sets.
-  #
-  # Single Join:
-  #
-  # Page.find(
-  #   :all, 
-  #   :joins => 'JOIN flags_pages on pages.id = flags_pages.page_id', 
-  #   :include => :flags, 
-  #   :conditions => ['flags_pages.flag_id IN (?)', [1,2]]
-  # )
-  # Two inner joins:
-  #
-  # Page.find(
-  #   :all, 
-  #   :joins => :flags_pages, 
-  #   :conditions => ['flags_pages.flag_id IN (?)', [1,2]]
-  # )
+
   named_scope :with_flags, lambda {|flag_names| 
     if (flags = Flag.find_all_by_name(flag_names)).empty?
       {}
-- 
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