backend: добавлена модель дуэлей

backend/migrations/versions/1da93403ba52_.py

@@ -0,0 +1,32 @@
+"""empty message
+
+Revision ID: 1da93403ba52
+Revises: aa81b5d5ae0f
+Create Date: 2022-11-20 11:44:37.737612
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = '1da93403ba52'
+down_revision = 'aa81b5d5ae0f'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    with op.batch_alter_table('duels', schema=None) as batch_op:
+        batch_op.add_column(sa.Column('created_on', sa.DateTime(), nullable=False))
+
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    with op.batch_alter_table('duels', schema=None) as batch_op:
+        batch_op.drop_column('created_on')
+
+    # ### end Alembic commands ###