moves search logic to a searchable module

app/models/concerns/searchable.rb

@@ -0,0 +1,19 @@
+module Searchable
+  extend ActiveSupport::Concern
+
+  included do
+    include PgSearch
+    include SearchCache
+
+    pg_search_scope :pg_search, {
+      against: :ignored, # not used since using a tsvector_column
+      using: {
+        tsearch: { tsvector_column: 'tsv', dictionary: "spanish", prefix: true }
+      },
+      ignoring: :accents,
+      ranked_by: '(:tsearch)',
+      order_within_rank: "#{self.table_name}.cached_votes_up DESC"
+    }
+  end
+
+end

app/models/debate.rb

@@ -5,8 +5,7 @@ class Debate < ActiveRecord::Base
   include Conflictable
   include Measurable
   include Sanitizable
-  include PgSearch
-  include SearchCache
+  include Searchable
   include Filterable
 
   apply_simple_captcha
@@ -41,16 +40,6 @@ class Debate < ActiveRecord::Base
   # Ahoy setup
   visitable # Ahoy will automatically assign visit_id on create
 
-  pg_search_scope :pg_search, {
-    against: :ignored, # not used since the using: option has a tsvector_column
-    using: {
-      tsearch: { dictionary: "spanish", tsvector_column: 'tsv', prefix: true }
-    },
-    ignoring: :accents,
-    ranked_by: '(:tsearch)',
-    order_within_rank: "debates.cached_votes_up DESC"
-  }
-
   def searchable_values
     { title              => 'A',
       author.username    => 'B',

app/models/proposal.rb

@@ -4,8 +4,7 @@ class Proposal < ActiveRecord::Base
   include Conflictable
   include Measurable
   include Sanitizable
-  include PgSearch
-  include SearchCache
+  include Searchable
   include Filterable
 
   apply_simple_captcha
@@ -44,16 +43,6 @@ class Proposal < ActiveRecord::Base
   scope :sort_by_flags,            -> { order(flags_count: :desc, updated_at: :desc) }
   scope :last_week,            -> { where("created_at >= ?", 7.days.ago)}
 
-  pg_search_scope :pg_search, {
-    against: :ignored, # not used since the using: option has a tsvector_column
-    using: {
-      tsearch: { dictionary: "spanish", tsvector_column: 'tsv', prefix: true }
-    },
-    ignoring: :accents,
-    ranked_by: '(:tsearch)',
-    order_within_rank: "proposals.cached_votes_up DESC"
-  }
-
   def searchable_values
     { title              => 'A',
       question           => 'B',