Fix hide played button

Fixes: #276

app/dbtables.py

@@ -50,7 +50,8 @@ class PlaydatesTable(Model):
     lastplayed: Mapped[dt.datetime] = mapped_column(index=True)
     track_id: Mapped[int] = mapped_column(ForeignKey("tracks.id"))
     track: Mapped["TracksTable"] = relationship(
-        "TracksTable", back_populates="playdates"
+        "TracksTable",
+        back_populates="playdates",
     )
 
     def __repr__(self) -> str:
@@ -103,7 +104,7 @@ class PlaylistRowsTable(Model):
     )
 
     playlist: Mapped[PlaylistsTable] = relationship(back_populates="rows")
-    track_id: Mapped[Optional[int]] = mapped_column(ForeignKey("tracks.id"))
+    track_id: Mapped[Optional[int]] = mapped_column(ForeignKey("tracks.id", ondelete="CASCADE"))
     track: Mapped["TracksTable"] = relationship(
         "TracksTable",
         back_populates="playlistrows",

app/models.py

@@ -36,7 +36,6 @@ if DATABASE_URL is None:
 if "unittest" in sys.modules and "sqlite" not in DATABASE_URL:
     raise ValueError("Unit tests running on non-Sqlite database")
 db = DatabaseManager.get_instance(DATABASE_URL, engine_options=Config.ENGINE_OPTIONS).db
-db.create_all()
 
 
 # Database classes

app/musicmuster.py

@@ -502,9 +502,7 @@ class Window(QMainWindow):
             )
         )
         file_menu.addSeparator()
-        file_menu.addAction(
-            self.create_action("Exit", self.close)
-        )  # Default action for closing
+        file_menu.addAction(self.create_action("Exit", self.close))
 
         # Playlist Menu
         playlist_menu = menu_bar.addMenu("&Playlist")
@@ -768,7 +766,7 @@ class Window(QMainWindow):
 
     def create_playlist_tab(self, playlist: Playlists) -> int:
         """
-        Take the passed proxy model, create a playlist tab and
+        Take the passed playlist, create a playlist tab and
         add tab to display. Return index number of tab.
         """
 
@@ -959,10 +957,10 @@ class Window(QMainWindow):
         if self.hide_played_tracks:
             self.hide_played_tracks = False
             self.current.base_model.hide_played_tracks(False)
-            self.btnHidePlayed.setText("Hide played")
+            self.footer_section.btnHidePlayed.setText("Hide played")
         else:
             self.hide_played_tracks = True
-            self.btnHidePlayed.setText("Show played")
+            self.footer_section.btnHidePlayed.setText("Show played")
             if Config.HIDE_PLAYED_MODE == Config.HIDE_PLAYED_MODE_SECTIONS:
                 self.active_tab().hide_played_sections()
             else:

app/playlistmodel.py

@@ -1279,6 +1279,10 @@ class PlaylistModel(QAbstractTableModel):
         unplayed_count: int = 0
         duration: int = 0
 
+        if rat.row_number == 0:
+            # Meaningless to have a subtotal on row 0
+            return Config.SUBTOTAL_ON_ROW_ZERO
+
         # Show subtotal
         for row_number in range(rat.row_number - 1, -1, -1):
             row_rat = self.playlist_rows[row_number]