fixes #2133

app/models/artist.rb

@@ -8,7 +8,7 @@ class Artist < ActiveRecord::Base
   belongs_to :creator, :class_name => "User"
   has_many :members, :class_name => "Artist", :foreign_key => "group_name", :primary_key => "name"
   has_many :urls, :dependent => :destroy, :class_name => "ArtistUrl"
-  has_many :versions, :order => "artist_versions.id ASC", :class_name => "ArtistVersion"
+  has_many :versions, lambda {order("artist_versions.id ASC")}, :class_name => "ArtistVersion"
   has_one :wiki_page, :foreign_key => "title", :primary_key => "name"
   has_one :tag_alias, :foreign_key => "antecedent_name", :primary_key => "name"
   has_one :tag, :foreign_key => "name", :primary_key => "name"
@@ -33,7 +33,7 @@ class Artist < ActiveRecord::Base
           break if url =~ /pixiv\.net\/(?:img\/)?$/
         end
 
-        artists.uniq_by {|x| x.name}.slice(0, 20)
+        artists.inject({}) {|h, x| h[x.name] = x; h}.values.slice(0, 20)
       end
     end
 
@@ -322,7 +322,7 @@ class Artist < ActiveRecord::Base
     end
 
     def search(params)
-      q = scoped
+      q = where("true")
       params = {} if params.blank?
 
       case params[:name]