reverse logic of age

Gemfile

@@ -6,6 +6,7 @@ group :test do
   gem "mocha", :require => "mocha/setup"
   gem "ffaker", :git => "http://github.com/EmmanuelOga/ffaker.git"
   gem "simplecov", :require => false
+  gem "testrbl"
 end
 
 group :assets do

Gemfile.lock

@@ -178,6 +178,7 @@ GEM
       rack (~> 1.0)
       tilt (~> 1.1, != 1.3.0)
     term-ansicolor (1.1.4)
+    testrbl (0.2.0)
     therubyracer (0.11.4)
       libv8 (~> 3.11.8.12)
       ref
@@ -235,6 +236,7 @@ DEPENDENCIES
   simple_form
   simplecov
   term-ansicolor
+  testrbl
   therubyracer
   uglifier (>= 1.0.3)
   unicorn

app/logical/post_query_builder.rb

@@ -120,7 +120,7 @@ class PostQueryBuilder
     relation = add_range_relation(q[:fav_count], "posts.fav_count", relation)
     relation = add_range_relation(q[:filesize], "posts.file_size", relation)
     relation = add_range_relation(q[:date], "posts.created_at", relation)
-    relation = add_range_relation(q[:age], "extract(epoch from (CURRENT_TIMESTAMP - posts.created_at))", relation)
+    relation = add_range_relation(q[:age], "extract(epoch from (posts.created_at - CURRENT_TIMESTAMP))", relation)
     relation = add_range_relation(q[:general_tag_count], "posts.tag_count_general", relation)
     relation = add_range_relation(q[:artist_tag_count], "posts.tag_count_artist", relation)
     relation = add_range_relation(q[:copyright_tag_count], "posts.tag_count_copyright", relation)

test/unit/post_test.rb

@@ -839,6 +839,12 @@ class PostTest < ActiveSupport::TestCase
   end
 
   context "Searching:" do
+    should "return posts for the age:<1m tag" do
+      post1 = FactoryGirl.create(:post, :tag_string => "aaa")
+      count = Post.tag_match("age:<1m").count
+      assert_equal(1, count)
+    end
+
     should "return posts for the ' tag" do
       post1 = FactoryGirl.create(:post, :tag_string => "'")
       post2 = FactoryGirl.create(:post, :tag_string => "aaa bbb")