From 80c50ccf8f46bfd623357bcc7a56f67aec282037 Mon Sep 17 00:00:00 2001
From: Chris Anderson <jchris@grabb.it>
Date: Sat, 17 May 2008 13:41:16 -0700
Subject: [PATCH] got reduce support working for javascript views

---
 lib/database.rb       | 12 ++++++++++--
 spec/database_spec.rb | 17 +++++++++++++++--
 2 files changed, 25 insertions(+), 4 deletions(-)

diff --git a/lib/database.rb b/lib/database.rb
index 4c4f80f..6d72265 100644
--- a/lib/database.rb
+++ b/lib/database.rb
@@ -13,8 +13,16 @@ class CouchRest
       CouchRest.get "#{@root}/_all_docs"      
     end
   
-    def temp_view func
-      JSON.parse(RestClient.post("#{@root}/_temp_view", func, {"Content-Type" => "text/javascript"}))
+    def temp_view map, reduce = nil
+      if reduce
+        funcs = {
+          :map => map,
+          :reduce => reduce
+        }
+      else
+        funcs = map
+      end
+      JSON.parse(RestClient.post("#{@root}/_temp_view", JSON.unparse(funcs), {"Content-Type" => "text/javascript"}))
     end
   
     def view name
diff --git a/spec/database_spec.rb b/spec/database_spec.rb
index 037f6f0..4f73dd2 100644
--- a/spec/database_spec.rb
+++ b/spec/database_spec.rb
@@ -16,7 +16,7 @@ describe CouchRest::Database do
     end
   end
     
-  describe "query with _temp_view in Javascript" do
+  describe "map query with _temp_view in Javascript" do
     before(:each) do
       @db.bulk_save([
           {"wild" => "and random"},
@@ -30,6 +30,20 @@ describe CouchRest::Database do
     end
   end
 
+  describe "map/reduce query with _temp_view in Javascript" do
+    before(:each) do
+      @db.bulk_save([
+          {"beverage" => "beer", :count => 4},
+          {"beverage" => "beer", :count => 2},
+          {"beverage" => "tea", :count => 3}
+        ])
+    end
+    it "should return the result of the temporary function" do
+      rs = @db.temp_view("function(doc){map(doc.beverage, doc.count)}", "function(beverage,counts){return sum(counts)}")
+      rs['result'].should == 9
+    end
+  end
+
   describe "select from an existing view" do
     before(:each) do
       r = @db.save({"_id" => "_design/first", "views" => {"test" => "function(doc){for(var w in doc){ if(!w.match(/^_/))map(w,doc[w])}}"}})
@@ -98,7 +112,6 @@ describe CouchRest::Database do
       lambda do
         @db.get('twoB')        
       end.should raise_error(RestClient::Request::RequestFailed)
-
     end
   end