Pre-reagent/submission association update.

alembic/versions/2684f065037c_link_controls_with_bacterial_culture_.py

@@ -0,0 +1,34 @@
+"""link controls with Bacterial Culture Samples
+
+Revision ID: 2684f065037c
+Revises: 7e7b6eeca468
+Create Date: 2023-12-05 10:29:31.126732
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = '2684f065037c'
+down_revision = '7e7b6eeca468'
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    with op.batch_alter_table('_control_samples', schema=None) as batch_op:
+        batch_op.add_column(sa.Column('sample_id', sa.INTEGER(), nullable=True))
+        batch_op.create_foreign_key('cont_BCS_id', '_samples', ['sample_id'], ['id'], ondelete='SET NULL')
+
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    with op.batch_alter_table('_control_samples', schema=None) as batch_op:
+        batch_op.drop_constraint('cont_BCS_id', type_='foreignkey')
+        batch_op.drop_column('sample_id')
+
+    # ### end Alembic commands ###