Merge pull request 'migration fix' (#6) from v2 into main

Reviewed-on: #6

alembic/versions/7506a3320699_channel_table.py

@@ -25,21 +25,22 @@ def upgrade() -> None:
     conn = op.get_bind()
     # 1. Создать новую таблицу
     op.create_table(
-        'channel_new',
+        'channels_new',
         sa.Column('id', sa.Integer(), nullable=False),
-        sa.Column('name', sa.String(length=255), nullable=False),
+        sa.Column('name', sa.String(length=255), nullable=True),
+        sa.Column('link', sa.String(length=255), nullable=True),
         sa.Column('admin_id', sa.Integer(), nullable=True),
         sa.PrimaryKeyConstraint('id')
     )
     # 2. Если старая таблица есть, скопировать данные
-    result = conn.execute(sa.text("SELECT name FROM sqlite_master WHERE type='table' AND name='channel'")).fetchone()
+    result = conn.execute(sa.text("SELECT name FROM sqlite_master WHERE type='table' AND name='channels'")).fetchone()
     if result:
-        conn.execute(sa.text("INSERT INTO channel_new (id, name, admin_id) SELECT id, name, admin_id FROM channel"))
-        op.drop_table('channel')
+        conn.execute(sa.text("INSERT INTO channels_new (id, name, link, admin_id) SELECT id, name, link, admin_id FROM channels"))
+        op.drop_table('channels')
     # 3. Переименовать новую таблицу
-    conn.execute(sa.text("ALTER TABLE channel_new RENAME TO channel"))
+    conn.execute(sa.text("ALTER TABLE channels_new RENAME TO channels"))
 
 
 def downgrade() -> None:
     """Downgrade schema."""
-    op.drop_table('channel')
+    op.drop_table('channels')