From 6afd7e02a44ee6e212150005b8b639b9ed321539 Mon Sep 17 00:00:00 2001
From: Toks <tttoksss@gmail.com>
Date: Sun, 14 Apr 2013 21:05:29 -0400
Subject: [PATCH] fixes #1225

---
 app/logical/post_query_builder.rb |  1 +
 app/models/tag.rb                 | 32 ++++++++++++++++++++++++++++++-
 2 files changed, 32 insertions(+), 1 deletion(-)

diff --git a/app/logical/post_query_builder.rb b/app/logical/post_query_builder.rb
index 5cb9ce4b3..27f8b9e02 100644
--- a/app/logical/post_query_builder.rb
+++ b/app/logical/post_query_builder.rb
@@ -120,6 +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[: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)
diff --git a/app/models/tag.rb b/app/models/tag.rb
index c4ef06578..a5172d6f8 100644
--- a/app/models/tag.rb
+++ b/app/models/tag.rb
@@ -1,5 +1,5 @@
 class Tag < ActiveRecord::Base
-  METATAGS = "-user|user|-approver|approver|commenter|comm|noter|-pool|pool|-fav|fav|sub|md5|-rating|rating|-locked|locked|width|height|mpixels|score|favcount|filesize|source|id|date|order|-status|status|tagcount|gentags|arttags|chartags|copytags|parent|-parent|pixiv_id|pixiv"
+  METATAGS = "-user|user|-approver|approver|commenter|comm|noter|-pool|pool|-fav|fav|sub|md5|-rating|rating|-locked|locked|width|height|mpixels|score|favcount|filesize|source|id|date|age|order|-status|status|tagcount|gentags|arttags|chartags|copytags|parent|-parent|pixiv_id|pixiv"
   attr_accessible :category
   has_one :wiki_page, :foreign_key => "name", :primary_key => "title"
 
@@ -186,6 +186,33 @@ class Tag < ActiveRecord::Base
           nil
         end
 
+      when :age
+        object =~ /(\d+)(s(econds?)?|mi(nutes?)?|h(ours?)?|d(ays?)?|w(eeks?)?|mo(nths?)?|y(ears?)?)/i
+
+        size = $1.to_i
+        unit = $2
+
+        conversion_factor = case unit
+        when /^s/i
+          1.second
+        when /^mi/i
+          1.minute
+        when /^h/i
+          1.hour
+        when /^d/i
+          1.day
+        when /^w/i
+          1.week
+        when /^mo/i
+          1.month
+        when /^y/i
+          1.year
+        else
+          1.second
+        end
+
+        (size * conversion_factor).to_i
+
       when :filesize
         object =~ /\A(\d+(?:\.\d*)?|\d*\.\d+)([kKmM]?)[bB]?\Z/
 
@@ -350,6 +377,9 @@ class Tag < ActiveRecord::Base
           when "date"
             q[:date] = parse_helper($2, :date)
 
+          when "age"
+            q[:age] = parse_helper($2, :age)
+
           when "tagcount"
             q[:post_tag_count] = parse_helper($2)