Descending sort order.

eee.rb

@@ -27,7 +27,8 @@
     "&skip=#{skip}"
 
   if params[:sort] =~ /\w/
-    couchdb_url += "&sort=#{params[:sort]}"
+    order = params[:order] =~ /desc/ ? "%5C" : ""
+    couchdb_url += "&sort=#{order}#{params[:sort]}"
   end
 
   data = RestClient.get couchdb_url

features/step_definitions/recipe_search.rb

@@ -218,3 +218,10 @@
   response.should have_selector("tr:nth-child(3) a",
                                 :content => "delicious recipe 10")
 end
+
+Then /^the results should be ordered by name in descending order$/ do
+  response.should have_selector("tr:nth-child(2) a",
+                                :content => "delicious recipe 9")
+  response.should have_selector("tr:nth-child(3) a",
+                                :content => "delicious recipe 8")
+end

helpers.rb

@@ -90,9 +90,19 @@ def pagination(query, results)
       %Q|<div class="pagination">#{links.join}</div>|
     end
 
-    def sort_link(text, sort_on, query)
+    def sort_link(text, sort_field, query, results)
       id  = "sort-by-#{text.downcase}"
-      url = "/recipes/search?q=#{query}&sort=#{sort_on}"
+
+      sort_field_current =
+        results["sort_order"] &&
+        results["sort_order"].detect { |sort_options|
+        sort_options["field"] == sort_field
+      }
+
+      sort = sort_field_current.nil? || sort_field_current["reverse"] ?
+        sort_field : "#{sort_field}&order=desc"
+
+      url = "/recipes/search?q=#{query}&sort=#{sort}"
       %Q|<a href="#{url}" id="#{id}">#{text}</a>|
     end
   end

spec/eee_helpers_spec.rb

@@ -116,12 +116,32 @@
 
 describe "sort_link" do
   it "should link the supplied text" do
-    sort_link("Foo", "sort_foo", "query").
+    sort_link("Foo", "sort_foo", "query", { }).
       should have_selector("a",
                            :content => "Foo")
   end
   it "should link to the query with the supplied sort field" do
-    sort_link("Foo", "sort_foo", "query").
+    sort_link("Foo", "sort_foo", "query", { }).
+      should have_selector("a",
+                           :href => "/recipes/search?q=query&sort=sort_foo")
+  end
+
+  it "should link in descending order if already sorted on the sort field in ascending order" do
+    results = {
+      "sort_order" => [{ "field"   => "sort_foo",
+                         "reverse" => false}]
+    }
+    sort_link("Foo", "sort_foo", "query", results).
+      should have_selector("a",
+                           :href => "/recipes/search?q=query&sort=sort_foo&order=desc")
+  end
+
+  it "should link in ascending order if already sorted on the sort field in descending order" do
+    results = {
+      "sort_order" => [{ "field"   => "sort_foo",
+                         "reverse" => true}]
+    }
+    sort_link("Foo", "sort_foo", "query", results).
       should have_selector("a",
                            :href => "/recipes/search?q=query&sort=sort_foo")
   end

spec/eee_spec.rb

@@ -121,5 +121,15 @@
 
       get "/recipes/search?q=title:egg&sort="
     end
+
+    it "should reverse sort when order=desc is supplied" do
+      RestClient.stub!(:get).
+        and_return('{"total_rows":30,"skip":0,"limit":20,"rows":[]}')
+
+      RestClient.should_receive(:get).with(/sort=%5C/)
+
+      get "/recipes/search?q=title:egg&sort=sort_foo&order=desc"
+    end
+
   end
 end

views/search.haml

@@ -1,8 +1,8 @@
 %table
   %tr
     %th
-      = sort_link("Name", "sort_title", @query)
-      = sort_link("Date", "sort_date",  @query)
+      = sort_link("Name", "sort_title", @query, @results)
+      = sort_link("Date", "sort_date",  @query, @results)
     %th= "Date"
   - @results['rows'].each_with_index do |result, i|
     %tr{:class => "row#{i % 2}"}