implement joining table

app/models/table.rb

@@ -16,15 +16,13 @@ class Table
   validates :number, numericality: {greater_than: 0}
   validates_uniqueness_of :number
 
-  view :active_lists, type: :custom, map_function: %|function(doc){
-    if(doc.ruby_class == 'List' && doc.state == 'active'){
-      emit(doc.table_id, 1); 
-    }
-  }|, reduce_function: '_sum'
-
   def occupied?
     return @is_occupied if instance_variable_defined?(:'@is_occupied')
-    @is_occupied = !self.class.database.view(self.class.active_lists(key: id, reduce: true)).zero?
+    @is_occupied = !self.class.database.view(List.active_by_table_id(key: id, reduce: true)).zero?
+  end
+
+  def active_list
+    @active_list ||= self.class.database.view(List.active_by_table_id(key: id, include_docs: true, reduce: false, limit: 1)).try(:first)
   end
 
   def reserved?