* VRFS-1684 and VRFS-1684 (find session APIs) completede

db/manifest

@@ -175,4 +175,5 @@ audio_latency.sql
 ams_index.sql
 update_ams_index.sql
 update_ams_index_2.sql
-sms_index.sql
+sms_index.sql
+music_sessions_description_search.sql

db/up/music_sessions_description_search.sql

@@ -0,0 +1,9 @@
+-- add full search capabilities for description (threw in genre too)
+ALTER TABLE music_sessions ADD COLUMN description_tsv tsvector;
+CREATE TRIGGER tsvectorupdate BEFORE INSERT OR UPDATE
+ON music_sessions FOR EACH ROW EXECUTE PROCEDURE
+tsvector_update_trigger(description_tsv, 'public.jamenglish', description);
+CREATE INDEX music_sessions_description_tsv_index ON music_sessions USING gin(description_tsv);
+
+-- prime the pump
+UPDATE music_sessions set description = description;

ruby/lib/jam_ruby/models/active_music_session.rb

@@ -1,5 +1,8 @@
 module JamRuby
   class ActiveMusicSession < ActiveRecord::Base
+
+    @@log = Logging.logger[ActiveMusicSession]
+
     self.primary_key = 'id'
 
     self.table_name = 'active_music_sessions'
@@ -337,10 +340,8 @@ module JamRuby
       keyword = options[:keyword]
       offset = options[:offset]
       limit = options[:limit]
-
+      day = options[:day]
-      connection = Connection.where(user_id: current_user.id, client_id: client_id).first!
+      timezone_offset = options[:timezone_offset]
-      my_locidispid = connection.locidispid
-      my_audio_latency = connection.last_jam_audio_latency
 
       query = MusicSession
         .select('music_sessions.*')
@@ -380,29 +381,32 @@ module JamRuby
         }
       )
 
-      if offset
+      # if not specified, default offset to 0
-        query = query.offset(offset)
+      offset ||= 0
-      end
+      offset = offset.to_i
+      # if not specified, default limit to 20
+      limit ||= 20
+      limit = limit.to_i
 
-      if limit
+      query = query.offset(offset)
-        query = query.limit(limit)
+      query = query.limit(limit)
-      end
+      query = query.where("music_sessions.genre_id = ?", genre) unless genre.blank?
+      query = query.where('music_sessions.language = ?', lang) unless lang.blank?
+      query = query.where("(description_tsv @@ to_tsquery('jamenglish', ?))", keyword + ':*') unless keyword.blank?
 
-      # cleanse keyword so it is only word characters. ignore if less than 3 characters long or greater than 100
+      if !day.blank? && !timezone_offset.blank?
-      # TODO do we want to force match of whole words only? this matches any substring...
+        begin
-      # TODO do we want to match more than one word in the phrase? this matches only the first word...
+          day = Date.parse(day)
-
+          next_day = day + 1
-      unless keyword.nil? or keyword.length < 3 or keyword.length > 100
+          timezone_offset = timezone_offset.to_i
-        w = keyword.split(/\W+/)
+          query = query.where("scheduled_start BETWEEN TIMESTAMP WITH TIME ZONE '#{day} 00:00:00#{timezone_offset}'
-        if w.length > 0 and w[0].length >= 3
+                    AND TIMESTAMP WITH TIME ZONE '#{next_day} 00:00:00#{timezone_offset}'")
-          query = query.where("music_sessions.description like '%#{w[0]}%'")
+        rescue Exception => e
+          # do nothing. bad date probably
+          @@log.warn("unable to parse  day=#{day}, timezone_offset=#{timezone_offset}, e=#{e}")
         end
       end
 
-      query = query.where("music_sessions.genre_id = ?", genre) unless genre.nil?
-
-      # TODO filter by lang
-
       return query
     end
 
@@ -428,13 +432,7 @@ module JamRuby
     def self.ams_index(current_user, params)
       ActiveMusicSession.ams_init(current_user, params)
 
-      music_sessions = ActiveMusicSession.ams_query(current_user,
+      music_sessions = ActiveMusicSession.ams_query(current_user, params).all
-                                              client_id: params[:client_id],
-                                              genre: params[:genre],
-                                              lang: params[:lang],
-                                              keyword: params[:keyword],
-                                              offset: params[:offset],
-                                              limit: params[:limit]).all
 
       music_session_users = ActiveMusicSession.ams_users.all
 

ruby/lib/jam_ruby/models/music_session.rb

@@ -3,6 +3,8 @@ require 'iso-639'
 module JamRuby
   class MusicSession < ActiveRecord::Base
 
+    @@log = Logging.logger[MusicSession]
+
     NO_RECURRING = 'once'
     RECURRING_WEEKLY = 'weekly'
 
@@ -591,10 +593,8 @@ module JamRuby
       keyword = options[:keyword]
       offset = options[:offset]
       limit = options[:limit]
-
+      day = options[:day]
-      connection = Connection.where(user_id: current_user.id, client_id: client_id).first!
+      timezone_offset = options[:timezone_offset]
-      my_locidispid = connection.locidispid
-      my_audio_latency = connection.last_jam_audio_latency
 
       query = MusicSession
       .select('music_sessions.*')
@@ -634,29 +634,32 @@ module JamRuby
         }
       )
 
-      if offset
+      # if not specified, default offset to 0
-        query = query.offset(offset)
+      offset ||= 0
-      end
+      offset = offset.to_i
+      # if not specified, default limit to 20
+      limit ||= 20
+      limit = limit.to_i
 
-      if limit
+      query = query.offset(offset)
-        query = query.limit(limit)
+      query = query.limit(limit)
-      end
+      query = query.where("music_sessions.genre_id = ?", genre) unless genre.blank?
+      query = query.where('music_sessions.language = ?', lang) unless lang.blank?
+      query = query.where("(description_tsv @@ to_tsquery('jamenglish', ?))", keyword + ':*') unless keyword.blank?
 
-      # cleanse keyword so it is only word characters. ignore if less than 3 characters long or greater than 100
+      if !day.blank? && !timezone_offset.blank?
-      # TODO do we want to force match of whole words only? this matches any substring...
+        begin
-      # TODO do we want to match more than one word in the phrase? this matches only the first word...
+          day = Date.parse(day)
-
+          next_day = day + 1
-      unless keyword.nil? or keyword.length < 3 or keyword.length > 100
+          timezone_offset = timezone_offset.to_i
-        w = keyword.split(/\W+/)
+          query = query.where("scheduled_start BETWEEN TIMESTAMP WITH TIME ZONE '#{day} 00:00:00#{timezone_offset}'
-        if w.length > 0 and w[0].length >= 3
+                    AND TIMESTAMP WITH TIME ZONE '#{next_day} 00:00:00#{timezone_offset}'")
-          query = query.where("music_sessions.description like '%#{w[0]}%'")
+        rescue Exception => e
+          # do nothing. bad date probably
+          @@log.warn("unable to parse  day=#{day}, timezone_offset=#{timezone_offset}, e=#{e}")
         end
       end
 
-      query = query.where("music_sessions.genre_id = ?", genre) unless genre.nil?
-
-      # TODO filter by lang
-
       return query
     end
 
@@ -682,13 +685,7 @@ module JamRuby
     def self.sms_index(current_user, params)
       MusicSession.sms_init(current_user, params)
 
-      music_sessions = MusicSession.sms_query(current_user,
+      music_sessions = MusicSession.sms_query(current_user, params).all
-                                                     client_id: params[:client_id],
-                                                     genre: params[:genre],
-                                                     lang: params[:lang],
-                                                     keyword: params[:keyword],
-                                                     offset: params[:offset],
-                                                     limit: params[:limit]).all
 
       music_session_users = MusicSession.sms_users.all
 

ruby/spec/factories.rb

@@ -58,13 +58,14 @@ FactoryGirl.define do
       legal_terms true
       genre JamRuby::Genre.first
       band nil
+      language 'en'
     end
 
 
     before(:create) do |session, evaluator|
       music_session = FactoryGirl.create(:music_session, name: evaluator.name, description: evaluator.description, fan_chat: evaluator.fan_chat,
                                          fan_access: evaluator.fan_access, approval_required: evaluator.approval_required, musician_access: evaluator.musician_access,
-                                         genre: evaluator.genre, creator: evaluator.creator, band: evaluator.band)
+                                         genre: evaluator.genre, creator: evaluator.creator, band: evaluator.band, language: evaluator.language)
       session.id = music_session.id
     end
 

ruby/spec/jam_ruby/models/active_music_session_spec.rb

@@ -332,6 +332,13 @@ describe ActiveMusicSession do
     end
   end
 
+
+  def ams(user, params)
+    ActiveRecord::Base.transaction do
+      return ActiveMusicSession.ams_index(user, params)
+    end
+  end
+
   describe "ams_index" do
     it "does not crash" do
 
@@ -347,8 +354,8 @@ describe ActiveMusicSession do
       user = FactoryGirl.create(:user, last_jam_locidispid: 1, last_jam_audio_latency: 5)
       c3 = FactoryGirl.create(:connection, user: user, locidispid: 1, last_jam_audio_latency: 5)
 
-      Score.createx(c1.locidispid, c1.client_id, c1.addr, c3.locidispid, c3.client_id, c3.addr, 20, nil);
+      Score.createx(c1.locidispid, c1.client_id, c1.addr, c3.locidispid, c3.client_id, c3.addr, 20, nil)
-      Score.createx(c2.locidispid, c2.client_id, c2.addr, c3.locidispid, c3.client_id, c3.addr, 30, nil);
+      Score.createx(c2.locidispid, c2.client_id, c2.addr, c3.locidispid, c3.client_id, c3.addr, 30, nil)
 
       # make a transaction
 
@@ -384,6 +391,120 @@ describe ActiveMusicSession do
       end
     end
 
+    describe "parameters" do
+      let(:creator_1) { FactoryGirl.create(:user, last_jam_locidispid: 4, last_jam_audio_latency: 8) }
+      let(:creator_conn_1) { FactoryGirl.create(:connection, user: creator_1, ip_address: '4.4.4.4', locidispid: 4, addr:4) }
+      let(:creator_2) { FactoryGirl.create(:user, last_jam_locidispid: 1, last_jam_audio_latency: 10) }
+      let(:creator_conn_2) { FactoryGirl.create(:connection, user: creator_2, ip_address: '4.4.4.4', locidispid: 1, addr:1) }
+      let(:creator_3) { FactoryGirl.create(:user, last_jam_locidispid: 2, last_jam_audio_latency: 12) }
+      let(:creator_conn_3) { FactoryGirl.create(:connection, user: creator_3, ip_address: '5.5.5.5', locidispid: 2, addr:2) }
+      let(:searcher_1) { FactoryGirl.create(:user, last_jam_locidispid: 5, last_jam_audio_latency: 6) }
+      let(:searcher_conn_1) { FactoryGirl.create(:connection, user: searcher_1, ip_address: '8.8.8.8', locidispid: 5, addr:5) }
+      let(:searcher_2) { FactoryGirl.create(:user, last_jam_locidispid: 3, last_jam_audio_latency: 14) }
+      let(:searcher_conn_2) { FactoryGirl.create(:connection, user: searcher_2, ip_address: '9.9.9.9', locidispid: 3, addr:3) }
+
+      let!(:music_session_1) { FactoryGirl.create(:active_music_session, :creator => creator_1, genre: Genre.find('african'), language: 'en', description: "Bunny Jumps" ) }
+      let!(:music_session_2) { FactoryGirl.create(:active_music_session, :creator => creator_2, genre: Genre.find('ambient'), language: 'es', description: "Play with us as we jam to beatles and bunnies") }
+
+      let(:good_network_score) { 20 }
+      let(:fair_network_score) { 30 }
+      let(:tracks) { [{'sound' => 'mono', 'client_track_id' => 'abc', 'instrument_id' => 'piano'}] }
+
+      it "offset/limit" do
+        # put creators in the session
+        creator_conn_1.join_the_session(music_session_1.music_session, true, tracks, creator_1, 10)
+        creator_conn_1.errors.any?.should be_false
+        creator_conn_2.join_the_session(music_session_2.music_session, true, tracks, creator_2, 10)
+        creator_conn_2.errors.any?.should be_false
+
+        # set up some scores to control sorting
+        Score.createx(searcher_conn_1.locidispid, searcher_conn_1.client_id, searcher_conn_1.addr, creator_conn_1.locidispid, creator_conn_1.client_id, creator_conn_1.addr, good_network_score, nil)
+        Score.createx(searcher_conn_1.locidispid, searcher_conn_1.client_id, searcher_conn_1.addr, creator_conn_2.locidispid, creator_conn_2.client_id, creator_conn_2.addr, fair_network_score, nil)
+
+        # verify we can get all 2 sessions
+        music_sessions, user_search = ams(searcher_1, client_id: searcher_conn_1.client_id)
+        music_sessions.length.should == 2
+        music_sessions[0].should == music_session_1.music_session
+
+        # grab just the 1st
+        music_sessions, user_search = ams(searcher_1, client_id: searcher_conn_1.client_id, offset:0, limit:1)
+        music_sessions.length.should == 1
+        music_sessions[0].should == music_session_1.music_session
+
+        # then the second
+        music_sessions, user_search = ams(searcher_1, client_id: searcher_conn_1.client_id, offset:1, limit:2)
+        music_sessions.length.should == 1
+        music_sessions[0].should == music_session_2.music_session
+      end
+
+      it "genre" do
+        # verify we can get all 2 sessions
+        music_sessions, user_search = ams(searcher_1, client_id: searcher_conn_1.client_id)
+        music_sessions.length.should == 2
+
+        # get only african
+        music_sessions, user_search = ams(searcher_1, client_id: searcher_conn_1.client_id, genre: 'african')
+        music_sessions.length.should == 1
+        music_sessions[0].genre.should == Genre.find('african')
+
+        # get only ambient
+        music_sessions, user_search = ams(searcher_1, client_id: searcher_conn_1.client_id, genre: 'ambient')
+        music_sessions.length.should == 1
+        music_sessions[0].genre.should == Genre.find('ambient')
+      end
+
+      it "language" do
+        # verify we can get all 2 sessions
+        music_sessions, user_search = ams(searcher_1, client_id: searcher_conn_1.client_id)
+        music_sessions.length.should == 2
+
+        # get only english
+        music_sessions, user_search = ams(searcher_1, client_id: searcher_conn_1.client_id, lang: 'en')
+        music_sessions.length.should == 1
+        music_sessions[0].language.should == 'en'
+
+        # get only ambient
+        music_sessions, user_search = ams(searcher_1, client_id: searcher_conn_1.client_id, lang: 'es')
+        music_sessions.length.should == 1
+        music_sessions[0].language.should == 'es'
+      end
+
+      it "keyword" do
+        music_sessions, user_search = ams(searcher_1, client_id: searcher_conn_1.client_id, keyword: 'Jump')
+        music_sessions.length.should == 1
+        music_sessions[0].should == music_session_1.music_session
+
+        music_sessions, user_search = ams(searcher_1, client_id: searcher_conn_1.client_id, keyword: 'Bunny')
+        music_sessions.length.should == 2
+
+        music_sessions, user_search = ams(searcher_1, client_id: searcher_conn_1.client_id, keyword: 'play')
+        music_sessions.length.should == 1
+
+        music_sessions, user_search = ams(searcher_1, client_id: searcher_conn_1.client_id, keyword: 'bun')
+        music_sessions.length.should == 2
+      end
+
+      it "date" do
+        music_session_1.music_session.scheduled_start = 1.days.ago
+        music_session_1.music_session.save!
+
+        # if no day/timezone_offset specified, both should be returned
+        music_sessions, user_search = ams(searcher_1, client_id: searcher_conn_1.client_id)
+        music_sessions.length.should == 2
+
+        # find today's session
+        music_sessions, user_search = ams(searcher_1, client_id: searcher_conn_1.client_id, day: Date.today.to_s, timezone_offset: DateTime.now.offset.numerator)
+        music_sessions.length.should == 1
+        music_sessions[0].should == music_session_2.music_session
+
+
+        # find yesterday's session
+        music_sessions, user_search = ams(searcher_1, client_id: searcher_conn_1.client_id, day: (Date.today - 1).to_s, timezone_offset: DateTime.now.offset.numerator)
+        music_sessions.length.should == 1
+        music_sessions[0].should == music_session_1.music_session
+      end
+    end
+
     # todo we need more tests:
     #
     # the easiest collection of tests, not involving filtering, just tagging and latency, still result in many cases

ruby/spec/jam_ruby/models/music_session_spec.rb

@@ -314,8 +314,8 @@ describe MusicSession do
       let!(:searcher_2) { FactoryGirl.create(:user, last_jam_locidispid: 3, last_jam_audio_latency: 14) }
       let!(:searcher_conn_2) { FactoryGirl.create(:connection, user: searcher_2, ip_address: '9.9.9.9', locidispid: 3, addr:3) }
 
-      let!(:music_session_1) { FactoryGirl.create(:music_session, creator: creator_1) }
+      let!(:music_session_1) { FactoryGirl.create(:music_session, creator: creator_1, genre: Genre.find('african'), language: 'en', description: "Bunny Jumps") }
-      let!(:music_session_2) { FactoryGirl.create(:music_session, creator: creator_2) }
+      let!(:music_session_2) { FactoryGirl.create(:music_session, creator: creator_2, genre: Genre.find('ambient'), language: 'es', description: "Play with us as we jam to beatles and bunnies") }
       let!(:music_session_3) { FactoryGirl.create(:music_session, creator: creator_3) }
 
       let(:good_network_score) { 20 }
@@ -385,7 +385,122 @@ describe MusicSession do
         music_sessions, user_scores = sms(searcher_1, {client_id: searcher_conn_1.client_id})
         music_sessions.length.should == 2
       end
+    end
 
+    describe "parameters" do
+      let(:creator_1) { FactoryGirl.create(:user, last_jam_locidispid: 4, last_jam_audio_latency: 8) }
+      let(:creator_conn_1) { FactoryGirl.create(:connection, user: creator_1, ip_address: '4.4.4.4', locidispid: 4, addr:4) }
+      let(:creator_2) { FactoryGirl.create(:user, last_jam_locidispid: 1, last_jam_audio_latency: 10) }
+      let(:creator_conn_2) { FactoryGirl.create(:connection, user: creator_2, ip_address: '4.4.4.4', locidispid: 1, addr:1) }
+      let(:creator_3) { FactoryGirl.create(:user, last_jam_locidispid: 2, last_jam_audio_latency: 12) }
+      let(:creator_conn_3) { FactoryGirl.create(:connection, user: creator_3, ip_address: '5.5.5.5', locidispid: 2, addr:2) }
+      let(:searcher_1) { FactoryGirl.create(:user, last_jam_locidispid: 5, last_jam_audio_latency: 6) }
+      let(:searcher_conn_1) { FactoryGirl.create(:connection, user: searcher_1, ip_address: '8.8.8.8', locidispid: 5, addr:5) }
+      let(:searcher_2) { FactoryGirl.create(:user, last_jam_locidispid: 3, last_jam_audio_latency: 14) }
+      let(:searcher_conn_2) { FactoryGirl.create(:connection, user: searcher_2, ip_address: '9.9.9.9', locidispid: 3, addr:3) }
+
+      let!(:music_session_1) { FactoryGirl.create(:music_session, :creator => creator_1, genre: Genre.find('african'), language: 'en', description: "Bunny Jumps" ) }
+      let!(:music_session_2) { FactoryGirl.create(:music_session, :creator => creator_2, genre: Genre.find('ambient'), language: 'es', description: "Play with us as we jam to beatles and bunnies") }
+
+      let(:good_network_score) { 20 }
+      let(:fair_network_score) { 30 }
+
+      it "offset/limit" do
+        # set up some scores to control sorting
+        Score.createx(searcher_conn_1.locidispid, searcher_conn_1.client_id, searcher_conn_1.addr, creator_conn_1.locidispid, creator_conn_1.client_id, creator_conn_1.addr, good_network_score, nil)
+        Score.createx(searcher_conn_1.locidispid, searcher_conn_1.client_id, searcher_conn_1.addr, creator_conn_2.locidispid, creator_conn_2.client_id, creator_conn_2.addr, fair_network_score, nil)
+
+        # verify we can get all 2 sessions
+        music_sessions, user_search = sms(searcher_1, client_id: searcher_conn_1.client_id)
+        music_sessions.length.should == 2
+        music_sessions[0].should == music_session_1
+
+        # grab just the 1st
+        music_sessions, user_search = sms(searcher_1, client_id: searcher_conn_1.client_id, offset:0, limit:1)
+        music_sessions.length.should == 1
+        music_sessions[0].should == music_session_1
+
+        # then the second
+        music_sessions, user_search = sms(searcher_1, client_id: searcher_conn_1.client_id, offset:1, limit:2)
+        music_sessions.length.should == 1
+        music_sessions[0].should == music_session_2
+      end
+
+      it "genre" do
+        # verify we can get all 2 sessions
+        music_sessions, user_search = sms(searcher_1, client_id: searcher_conn_1.client_id)
+        music_sessions.length.should == 2
+
+        # get only african
+        music_sessions, user_search = sms(searcher_1, client_id: searcher_conn_1.client_id, genre: 'african')
+        music_sessions.length.should == 1
+        music_sessions[0].genre.should == Genre.find('african')
+
+        # get only ambient
+        music_sessions, user_search = sms(searcher_1, client_id: searcher_conn_1.client_id, genre: 'ambient')
+        music_sessions.length.should == 1
+        music_sessions[0].genre.should == Genre.find('ambient')
+      end
+
+      it "language" do
+        # verify we can get all 2 sessions
+        music_sessions, user_search = sms(searcher_1, client_id: searcher_conn_1.client_id)
+        music_sessions.length.should == 2
+
+        # get only english
+        music_sessions, user_search = sms(searcher_1, client_id: searcher_conn_1.client_id, lang: 'en')
+        music_sessions.length.should == 1
+        music_sessions[0].language.should == 'en'
+
+        # get only ambient
+        music_sessions, user_search = sms(searcher_1, client_id: searcher_conn_1.client_id, lang: 'es')
+        music_sessions.length.should == 1
+        music_sessions[0].language.should == 'es'
+      end
+
+      it "keyword" do
+        music_sessions, user_search = sms(searcher_1, client_id: searcher_conn_1.client_id, keyword: 'Jump')
+        music_sessions.length.should == 1
+        music_sessions[0].should == music_session_1
+
+        music_sessions, user_search = sms(searcher_1, client_id: searcher_conn_1.client_id, keyword: 'Bunny')
+        music_sessions.length.should == 2
+
+        music_sessions, user_search = sms(searcher_1, client_id: searcher_conn_1.client_id, keyword: 'play')
+        music_sessions.length.should == 1
+
+        music_sessions, user_search = sms(searcher_1, client_id: searcher_conn_1.client_id, keyword: 'bun')
+        music_sessions.length.should == 2
+      end
+
+      it "date" do
+        music_session_1.scheduled_start = 1.days.ago
+        music_session_1.save!
+
+        # if no day/timezone_offset specified, then the 15 minute slush rule will still kick in, nixing music_session_1
+        music_sessions, user_search = sms(searcher_1, client_id: searcher_conn_1.client_id)
+        music_sessions.length.should == 1
+        music_sessions[0].should == music_session_2
+
+        # find today's session
+        music_sessions, user_search = sms(searcher_1, client_id: searcher_conn_1.client_id, day: Date.today.to_s, timezone_offset: DateTime.now.offset.numerator)
+        music_sessions.length.should == 1
+        music_sessions[0].should == music_session_2
+
+        # find yesterday's session... oh wait, you can't find a session for yesterday, because the 15 minute slush rule will still kick in.
+        music_sessions, user_search = sms(searcher_1, client_id: searcher_conn_1.client_id, day: (Date.today - 1).to_s, timezone_offset: DateTime.now.offset.numerator)
+        music_sessions.length.should == 0
+
+        # but let's make it tomorrow, so we can test in that direction
+        music_session_1.scheduled_start = 1.day.from_now
+        music_session_1.save!
+
+        music_sessions, user_search = sms(searcher_1, client_id: searcher_conn_1.client_id, day: (Date.today + 1).to_s, timezone_offset: DateTime.now.offset.numerator)
+        music_sessions.length.should == 1
+        music_sessions[0].should == music_session_1
+
+
+      end
     end
   end
 end

web/spec/factories.rb

@@ -77,13 +77,14 @@ FactoryGirl.define do
       legal_terms true
       genre JamRuby::Genre.first
       band nil
+      language 'en'
     end
 
 
     before(:create) do |session, evaluator|
       music_session = FactoryGirl.create(:music_session, name: evaluator.name, description: evaluator.description, fan_chat: evaluator.fan_chat,
                                          fan_access: evaluator.fan_access, approval_required: evaluator.approval_required, musician_access: evaluator.musician_access,
-                                         genre: evaluator.genre, creator: evaluator.creator, band: evaluator.band)
+                                         genre: evaluator.genre, creator: evaluator.creator, band: evaluator.band, language: evaluator.language)
       session.id = music_session.id
     end