fix missing data for user tagged view

books/models.py

@@ -163,3 +163,7 @@ class BookTag(Tag):
             models.UniqueConstraint(
                 fields=['content', 'mark'], name="unique_bookmark_tag")
         ]
+
+    @property
+    def item(self):
+        return self.book

games/models.py

@@ -150,3 +150,7 @@ class GameTag(Tag):
             models.UniqueConstraint(
                 fields=['content', 'mark'], name="unique_gamemark_tag")
         ]
+
+    @property
+    def item(self):
+        return self.game

movies/models.py

@@ -270,3 +270,7 @@ class MovieTag(Tag):
             models.UniqueConstraint(
                 fields=['content', 'mark'], name="unique_moviemark_tag")
         ]
+
+    @property
+    def item(self):
+        return self.movie

music/models.py

@@ -185,6 +185,10 @@ class SongTag(Tag):
                 fields=['content', 'mark'], name="unique_songmark_tag")
         ]
 
+    @property
+    def item(self):
+        return self.song
+
 
 class AlbumMark(Mark):
     album = models.ForeignKey(
@@ -227,3 +231,7 @@ class AlbumTag(Tag):
             models.UniqueConstraint(
                 fields=['content', 'mark'], name="unique_albummark_tag")
         ]
+
+    @property
+    def item(self):
+        return self.album