From c755b29a862c7da91f30a7c68ac98cfdc79cfbf5 Mon Sep 17 00:00:00 2001
From: David Heinemeier Hansson <david@loudthinking.com>
Date: Sat, 15 Jan 2005 13:22:58 +0000
Subject: Fixed page caching problems with saving cached file fails for the
 index action and that it shouldnt cache files with GET/POST parameters #462

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@407 5ecf4fe2-1ee6-0310-87b1-e25e094e27de
---
 actionpack/lib/action_controller/caching.rb | 22 +++++++++++++++++-----
 1 file changed, 17 insertions(+), 5 deletions(-)

(limited to 'actionpack')

diff --git a/actionpack/lib/action_controller/caching.rb b/actionpack/lib/action_controller/caching.rb
index 672215cc61..6f7f27fb5b 100644
--- a/actionpack/lib/action_controller/caching.rb
+++ b/actionpack/lib/action_controller/caching.rb
@@ -54,14 +54,14 @@ module ActionController #:nodoc:
       module ClassMethods
         def cache_page(content, path)
           return unless perform_caching
-          FileUtils.makedirs(File.dirname(page_cache_directory + path))
-          File.open(page_cache_directory + path, "w+") { |f| f.write(content) }
+          FileUtils.makedirs(File.dirname(page_cache_path(path)))
+          File.open(page_cache_path(path), "w+") { |f| f.write(content) }
           logger.info "Cached page: #{path}" unless logger.nil?
         end
 
         def expire_page(path)
           return unless perform_caching
-          File.delete(page_cache_directory + path) if File.exists?(page_cache_directory + path)
+          File.delete(page_cache_path(path)) if File.exists?(page_cache_path(path))
           logger.info "Expired page: #{path}" unless logger.nil?
         end
         
@@ -71,6 +71,14 @@ module ActionController #:nodoc:
             class_eval "after_filter { |c| c.cache_page if c.action_name == '#{action}' }"
           end
         end
+        
+        def page_cache_path(path)
+          if path[-1,1] == '/'
+            page_cache_directory + path + '/index'
+          else
+            page_cache_directory + path
+          end
+        end
       end
 
       def expire_page(options = {})
@@ -94,9 +102,13 @@ module ActionController #:nodoc:
       end
       
       def cache_page(content = nil, options = {})
-        return unless perform_caching
+        return unless perform_caching && caching_allowed
         self.class.cache_page(content || @response.body, url_for(options.merge({ :only_path => true })))
       end
+
+      def caching_allowed
+        !@request.method.post? and (@request.parameters.reject {|k, v| ['id', 'action', 'controller'].include?(k)}).empty?
+      end
     end
 
     # Action caching is similar to page caching by the fact that the entire output of the response is cached, but unlike page caching, 
@@ -348,4 +360,4 @@ module ActionController #:nodoc:
       end
     end
   end
-end
\ No newline at end of file
+end
-- 
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