Only show AddToPlaylist if the current user can create playlists

app/assets/javascripts/avalon_player.js.coffee

@@ -19,9 +19,10 @@ class AvalonPlayer
     @stream_info = stream_info
     removeOpt = (key) -> value = opts[key]; delete opts[key]; value
     thumbnail_selector = if removeOpt('thumbnailSelector') then 'thumbnailSelector' else null
+    add_to_playlist = if removeOpt('addToPlaylist') then 'addToPlaylist' else null
     start_time = removeOpt('startTime')
 
-    features = ['playpause','current','progress','duration','volume','tracks','qualities',thumbnail_selector,'fullscreen','responsive', 'addToPlaylist']
+    features = ['playpause','current','progress','duration','volume','tracks','qualities',thumbnail_selector, add_to_playlist, 'fullscreen','responsive']
     features = (feature for feature in features when feature?)
     player_options =
       mode: 'auto_plugin'

app/views/media_objects/_item_view.html.erb

@@ -54,7 +54,7 @@ Unless required by applicable law or agreed to in writing, software distributed
       <% end %>
     </section>
 
-    <%= render file: '_add_to_playlist.html.erb' %>
+    <%= render file: '_add_to_playlist.html.erb' if current_user.present? %>
     <%= render 'workflow_progress' %>
     <%= render 'share' if will_partial_list_render? :share %>
     <%= render partial: 'sections',
@@ -91,6 +91,8 @@ Unless required by applicable law or agreed to in writing, software distributed
       audioHeight: <%= MasterFile::AUDIO_HEIGHT %>,
       mobileDisplayedDuration: <%= @currentStream ? (@currentStream.duration.to_f / 1000).round : -1 %>,
       thumbnailSelector: <%= can?(:edit, @mediaobject) ? 'true' : 'false' %>,
+      //addToPlaylist: <%= can?(:create, Playlist) ? 'true' : 'false' %>,
+      addToPlaylist: <%= current_user.present? ? 'true' : 'false' %>,
       startQuality: '<%= current_quality(@currentStreamInfo) %>',
       customError: '<%= t("media_objects.player.customError").html_safe %>'
     })