fix for artist search

app/logical/sources/strategies/nico_seiga.rb

@@ -60,7 +60,7 @@ module Sources
         @agent ||= begin
           mech = Mechanize.new
 
-          mech.get("http://seiga.nicovideo.jp/login/redirect?next_url=") do |page|
+          mech.get("https://secure.nicovideo.jp/secure/login_form") do |page|
             page.form_with do |form|
               form["mail"] = Danbooru.config.nico_seiga_login
               form["password"] = Danbooru.config.nico_seiga_password

app/models/artist.rb

@@ -230,7 +230,7 @@ class Artist < ActiveRecord::Base
       q = active
       return q if params.blank?
 
-      case params[:name].present?
+      case params[:name]
       when /^http/
         q = q.url_matches(params[:name])
 

test/unit/sources/nico_seiga_test.rb

@@ -6,6 +6,7 @@ module Sources
   class NicoSeigaTest < ActiveSupport::TestCase
     context "The source site for nico seiga" do
       setup do
+        # Sources::Strategies::NicoSeiga.new("http://lohas.nicoseiga.jp/priv/2853566?e=1361296671&h=794b3686b02edfd64c22ed2f99a4c55650371854")
         @site = Sources::Site.new("http://seiga.nicovideo.jp/seiga/im1464351?track=ranking")
         @site.get
       end